Drugs Similar to ESTRADIOL

Estradiol transdermal system USP, contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of estradiol transdermal system, USP are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)-triene-3,17β-diol. The structural formula is The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 Estradiol transdermal system USP, is comprised of three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. Meets USP Drug Release Test 6. formula 3 layers

Estradiol vaginal inserts USP, 10 mcg are white to off-white, round, film-coated, unscored, biconvex inserts containing 10.3 mcg of estradiol hemihydrate, USP equivalent to 10 mcg of estradiol. Each 10 mcg estradiol vaginal insert contains the following excipients: corn starch, hypromellose, lactose monohydrate, magnesium stearate, and polyethylene glycol. Each estradiol vaginal insert is 6 mm in diameter and is placed in a disposable applicator. Each insert-filled applicator is packaged separately in a blister pack. Estradiol vaginal inserts are used intravaginally. When the insert comes in contact with the vaginal mucosa, estradiol is released into the vagina. Estradiol hemihydrate, USP is white to practically white crystals or powder and chemically described as estra1,3,5 (10)-triene-3,17β-diol, hydrate (2:1). The structural formula is: C 18 H 24 O 2 . 1/2 H 2 O M.W. 281.4 (Estradiol hemihydrate, USP) FDA approved dissolution test specifications differ from USP.

Each gram of estradiol vaginal cream USP 0.01% contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and t e rtiar y -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula is: Each gram of estradiol vaginal cream USP 0.01% contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol gel 0.1%, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel 0.1% is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol, an estrogen. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The remaining components of the gel (carbomer, ethanol, propylene glycol, purified water, and triethanolamine) are pharmacologically inactive. Estradiol gel 0.1% contains: 58.6% alcohol. Divigel Chemical Structure

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: [structure] C18H24O2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP.

Estradiol transdermal system contains estradiol in a multipolymeric adhesive. The system is designed to release estradiol continuously upon application to intact skin. Five dosage strengths of estradiol transdermal system are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol per day via the skin. Each corresponding system has an active surface area of 2.5, 3.75, 5.0, 7.5, or 10.0 cm 2 and contains 0.39, 0.585, 0.78, 1.17, or 1.56 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5 (10)-triene-3,17β-diol. The structural formula is: The molecular formula of estradiol is C 18 H 24 0 2. The molecular weight is 272.39 g/mol. Estradiol transdermal system is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) a translucent polyolefin film (2) an adhesive formulation containing estradiol, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. ----- (1) Backing ----- (2) Adhesive Containing Estradiol ----- (3) Protective Liner The active component of the system is estradiol. The remaining components of the system are pharmacologically inactive. Estradiol structural formula Estradiol Transdermal System - Layers

Estradiol Transdermal System, USP is designed to release estradiol continuously upon application to intact skin. Six (7.5, 11.25, 15, 18, 22.5 and 30 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 7.5, 11.25, 15, 18, 22.5 or 30 cm 2 , and contains 1.888, 2.832, 3.777, 4.532, 5.665 or 7.553 mg of estradiol USP respectively. The composition of the systems per unit area is identical. Estradiol USP is a white or creamy white, small crystals or crystalline powder, odorless, stable in air and hygroscopic. Estradiol USP is chemically described as estra-1,3,5(10)-triene-3, 17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The Estradiol Transdermal System, USP comprises three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: A translucent polyethylene film. An acrylate adhesive matrix containing estradiol USP. A protective liner of silicone coated polyester film is attached to the adhesive surface and must be removed before the system can be used. Cross Section of the System Estradiol Transdermal System, USP is packaged with additional pieces of protective film above and below the system within each pouch. These are discarded at the time of use. The active component of the system is estradiol USP. The remaining components of the system (acrylic adhesive, colloidal silicon dioxide, ethyl oleate, glyceryl monolaurate, isopropyl myristate, povidone and polyethylene backing) are pharmacologically inactive. FDA approved drug release test specifications differ from USP. Estradiol Transdermal System Estradiol Transdermal System

Estradiol gel 0.1%, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol, USP when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1, and 1.25 mg estradiol USP, respectively). The active component of the topical gel is estradiol USP, an estrogen. Estradiol, USP is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The remaining components of the gel (carbomer homopolymer type B, ethyl alcohol 95%, propylene glycol, purified water, and trolamine) are pharmacologically inactive. Estradiol gel, 0.1% contains 55% w/w alcohol. Structural Formula

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

Each gram of estradiol vaginal cream, USP, 0.01% contains 0.1 mg estradiol (as estradiol hemihydrate) in a nonliquefying base containing propylene glycol, methylparaben, sodium lauryl sulfate, mono- and di-glycerides, stearyl alcohol, ceresin wax, tert-butylhydroquinone, disodium EDTA, hypromellose, and purified water. Estradiol hemihydrate is chemically described as estra-1,3,5(10)-triene-3,17β-diol hemihydrate. It has an empirical formula of C 18 H 24 O 2 . ½H 2 O and molecular weight of 272.37. The structural formula is: structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: Lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate. structural-formula

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate.

Estradiol Gel, 0.1% is a clear, colorless smooth gel, free from visible particulate matter. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol, an estrogen. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The remaining components of the gel (carbomer, alcohol [62%], propylene glycol, purified water, and trolamine) are pharmacologically inactive. structure

Each gram of estradiol vaginal cream, USP 0.01% contains 0.1 mg estradiol (as estradiol hemihydrate) in a nonliquefying base containing propylene glycol, methylparaben, sodium lauryl sulfate, mono- and di-glycerides, stearyl alcohol, ceresin wax, tert-butylhydroquinone, disodium EDTA, hypromellose, and purified water. Estradiol hemihydrate is chemically described as estra-1,3,5(10)-triene-3,17β-diol hemihydrate. It has an empirical formula of C 18 H 24 O 2 . ½H 2 O and molecular weight of 281.39. The structural formula is: structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake.

Climara (estradiol transdermal system), is designed to release estradiol continuously upon application to intact skin. Six (6.5, 9.375, 12.5, 15, 18.75 and 25 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 6.5, 9.375, 12.5, 15, 18.75 or 25 cm 2 , and contains 2, 2.85, 3.8, 4.55, 5.7 or 7.6 mg of estradiol USP respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5(10)-triene-3, 17β-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The Climara transdermal system comprises three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: 1. A translucent polyethylene film. 2. An acrylate adhesive matrix containing estradiol USP. 3. A protective liner of siliconized or fluoropolymer-coated polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (acrylate copolymer adhesive, fatty acid esters, and polyethylene backing) are pharmacologically inactive. Chemical Structure Patch Diagram

Divigel (estradiol gel) 0.1 percent, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Divigel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: Divigel Chemical Structure The remaining components of the gel (carbomer, ethanol, propylene glycol, purified water, and triethanolamine) are pharmacologically inactive. Divigel Chemical Structure

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP. 1 2

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

ELESTRIN (estradiol gel) contains 0.06% of estradiol, in a colorless, non-staining hydroalcoholic gel base. One pump actuation delivers ELESTRIN in a unit dose of 0.52 mg of estradiol in 0.87 g of gel. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17-diol, (17β)-. It has a molecular formula of C 18 H 24 O 2 •½H 2 O and molecular weight of 281.4. The structural formula is: The active component of ELESTRIN is estradiol. The remaining components of the gel (ethanol, propylene glycol, diethylene glycol monoethyl ether, carbomer homopolymer type C, triethanolamine, edetate disodium, and purified water) are pharmacologically inactive. Elestrin Structural Formula

Each gram of ESTRACE (estradiol vaginal cream USP 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula for ESTRACE (estradiol vaginal cream, USP, 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Each gram of ESTRACE (estradiol vaginal cream USP 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula for ESTRACE (estradiol vaginal cream, USP, 0.01%) contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate.

Estradiol Gel, 0.1% is a clear, colorless smooth gel, free from visible particulate matter. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Estradiol gel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol, an estrogen. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The remaining components of the gel (carbomer, alcohol [62%], propylene glycol, purified water, and trolamine) are pharmacologically inactive. structure

Estradiol Tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, dibasic calcium phosphate, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and FD&C yellow no. 5 (tartrazine) aluminum lake. structual formula

Estradiol tablets, USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white, crystalline solid, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: In addition, each tablet for oral administration contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium starch glycolate.

Estradiol gel contains 0.06 percent estradiol in an absorptive hydroalcoholic gel base for topical application. It is a clear, colorless gel, which is odorless when dry. One pump depression of estradiol gel, 0.06% delivers 1.25 g of gel containing 0.75 mg estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17β-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: The active component of the gel is estradiol. The remaining components of the gel (purified water, alcohol (44.89% v/v), triethanolamine and carbomer 974P) are pharmacologically inactive. structure

Estradiol vaginal inserts USP, 10 mcg are white to off-white, round, film-coated, unscored, biconvex inserts containing 10.3 mcg of estradiol hemihydrate, USP equivalent to 10 mcg of estradiol. Each 10 mcg estradiol vaginal insert contains the following excipients: corn starch, hypromellose, lactose monohydrate, magnesium stearate, and polyethylene glycol. Each estradiol vaginal insert is 6 mm in diameter and is placed in a disposable applicator. Each insert-filled applicator is packaged separately in a blister pack. Estradiol vaginal inserts are used intravaginally. When the insert comes in contact with the vaginal mucosa, estradiol is released into the vagina. Estradiol hemihydrate, USP is white to practically white crystals or powder and chemically described as estra1,3,5 (10)-triene-3,17β-diol, hydrate (2:1). The structural formula is: C 18 H 24 O 2 . 1/2 H 2 O M.W. 281.4 (Estradiol hemihydrate, USP) FDA approved dissolution test specifications differ from USP.

Each gram of estradiol vaginal cream USP 0.01% contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and t e rtiar y -butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.37. The structural formula is: The structural formula is: Each gram of estradiol vaginal cream USP 0.01% contains 0.1 mg estradiol in a nonliquefying base containing purified water, propylene glycol, stearyl alcohol, white ceresin wax, mono- and di-glycerides, hypromellose 2208 (4000 cps), sodium lauryl sulfate, methylparaben, edetate di-sodium and tertiary-butylhydroquinone. Estradiol is chemically described as estra-1,3,5(10)-triene-3, 17(beta)-diol. It has an empirical formula of C18H24O2 and molecular weight of 272.37.

Estradiol Tablets USP for oral administration contains 0.5, 1 or 2 mg of micronized estradiol, USP per tablet. Estradiol, USP (17β-estradiol) is a white to practically white powder, chemically described as estra-1,3,5,(10)-triene-3, 17β-diol. The structural formula is: C 18 H 24 O 2 M.W. 272.38 Inactive Ingredients: Colloidal silicon dioxide, corn starch, microcrystalline cellulose, lactose monohydrate, magnesium stearate, and sodium starch glycolate. In addition, the 1 mg also contains FD&C blue no. 1 aluminum lake and D&C red no. 27 aluminum lake. The 2 mg also contains FD&C blue no. 1 aluminum lake and D&C yellow no. 10 aluminum lake. FDA approved dissolution test specifications differ from USP. structure

USES: This is a topical cream that contains bio-identical estriol and estradiol derived from wild yam and formulated in an 80:20 ratio. When applied to the skin it can help balance your hormones and provide temporary relief from menopausal symptoms such as hot flashes. DIRECTIONS: Apply once or twice a day. Massage into inner arms, thighs, chest or apply to inner forearm and rub arms together or use as directed by your Physician.

Abigale, 1 mg/0.5 mg is a single tablet for oral administration containing 1 mg of estradiol and 0.5 mg of norethindrone acetate and the following excipients: maize starch, lactose monohydrate, FD&C Yellow No. 6, copovidone, talc and magnesium stearate. Abigale Lo, 0.5 mg/0.1 mg is a single tablet for oral administration containing 0.5 mg of estradiol and 0.1 mg of norethindrone acetate and the following excipients: maize starch, lactose monohydrate, FD&C Yellow No. 6, copovidone, talc and magnesium stearate. Estradiol (E 2 ), is a white or almost white crystalline powder. Its chemical name is estra-1, 3, 5 (10)-triene-3, 17β-diol hemihydrate with the empirical formula of C 18 H 24 O 2 , ½ H 2 O and a molecular weight of 281.4. The structural formula of E 2 is as follows: Norethindrone acetate (NETA) is a white or yellowish-white crystalline powder. Its chemical name is 17β -acetoxy-19-nor-17α -pregn-4-en-20-yn-3-one with the empirical formula of C 22 H 28 O 3 and molecular weight of 340.5. The structural formula of NETA is as follows: Estradiol Structural Formula Norethindrone Acetate Structural Formula

Activella 1 mg/0.5 mg is a single tablet for oral administration containing 1 mg of estradiol and 0.5 mg of norethindrone acetate and the following excipients: lactose monohydrate, starch (corn), copovidone, talc, magnesium stearate, hypromellose and triacetin. Activella 0.5 mg/0.1 mg is a single tablet for oral administration containing 0.5 mg of estradiol and 0.1 mg of norethindrone acetate and the following excipients: lactose monohydrate, starch (corn), hydroxypropylcellulose, talc, magnesium stearate, hypromellose and triacetin. Estradiol is a white or almost white crystalline powder. Its chemical name is estra-1, 3, 5 (10)-triene-3, 17β-diol hemihydrate with the empirical formula of C 18 H 24 O 2 ,1/2; H 2 O and a molecular weight of 281.4. The structural formula of E 2 is as follows: Estradiol Norethindrone acetate (NETA) is a white or yellowish-white crystalline powder. Its chemical name is 17β-acetoxy-19-nor-17α-pregn-4-en-20-yn-3-one with the empirical formula of C 22 H 28 O 3 and molecular weight of 340.5. The structural formula of NETA is as follows: Norethindrone Acetate Estradiol structural formula Norethindrone Acetate structural formula

Angeliq tablets, for oral administration, provide a hormone regimen consisting of drospirenone and estradiol. Drospirenone, (6R,7R,8R,9S,10R,13S,14S,15S,16S,17S)-1,3´,4´,6, 6a,7,8,9,10,11,12,13,14,15,15a,16-hexadecahydro-10,13-dimethylspiro-[17H-dicyclopropa[6,7:15,16]cyclopenta[a]phenanthrene- 17,2´(5H)-furan]-3,5´(2H)-dione (CAS) is a synthetic progestational compound and has a molecular weight of 366.5 and a molecular formula of C 24 H 30 O 3 . Estradiol USP, (Estra-1,3,5(10)-triene-3,17-diol,17ß), has a molecular weight of 272.39 and the molecular formula is C 18 H 24 O 2 . The structural formulas are as follows: The inactive ingredients in Angeliq 0.5 mg DRSP/1 mg E2 tablets are: lactose monohydrate NF, corn starch NF, pregelatinized starch NF, povidone 25000 USP, magnesium stearate NF, hydroxylpropylmethyl cellulose USP, macrogol 6000 NF, talc USP, titanium dioxide USP, and red ferric oxide pigment NF. The inactive ingredients in Angeliq 0.25 mg DRSP/0.5 mg E2 tablets are: lactose monohydrate NF, corn starch NF, pregelatinized starch NF, povidone 25000 USP, magnesium stearate NF, hydroxylpropylmethyl cellulose USP, macrogol 6000 NF, talc USP, titanium dioxide USP, and yellow ferric oxide pigment NF. Chemical Structure

DIRECTIONS: Apply once or twice a day. Massage into inner arms, thighs, chest or apply to inner forearm and rub arms together or use as directed by your Physician.

USES: This is a topical cream that contains bio-identical estriol and estradiol derived from wild yam and formulated in an 80:20 ratio. When applied to the skin it can help balance your hormones and provide temporary relief from menopausal symptoms such as hot flashes. DIRECTIONS: Apply once or twice a day. Massage into inner arms, thighs, chest or apply to inner forearm and rub arms together or use as directed by your Physician.

USES: This is a topical cream that contains bio-identical estriol and estradiol derived from wild yam and formulated in an 80:20 ratio. When applied to the skin it can help balance your hormones and provide temporary relief from menopausal symptoms such as hot flashes. DIRECTIONS: Apply once or twice a day. Massage into inner arms, thighs, chest or apply to inner forearm and rub arms together or use as directed by your Physician.

BIJUVA (estradiol and progesterone) is an oval shaped opaque capsule in which the estradiol is solubilized and the progesterone is micronized and suspended in the mixture of medium chain mono and di-glycerides and lauroyl polyoxyl-32 glycerides. Each 0.5 mg/100 mg capsule is light pink on one side, dark pink on the other side, and printed with "5C1" in white ink. Each 1 mg/100 mg capsule is light pink on one side, dark pink on the other side, and printed with "1C1" in white ink. Estradiol (estra-1,3,5 (10)-triene-3,17β-diol), an estrogen, has a molecular weight of 272.38, and chemical formula C 18 H 24 O 2 . Progesterone (pregn-4-ene-3, 20-dione) has a molecular weight of 314.47, and chemical formula C 21 H 30 O 2 . The structural formulas are as follows: Estradiol Progesterone Each BIJUVA (estradiol and progesterone) capsule contains the following inactive ingredients: ammonium hydroxide, ethanol, ethyl acetate, FD&C Red #40, gelatin, glycerin, hydrolyzed gelatin, isopropyl alcohol, lauroyl polyoxyl-32 glycerides, lecithin, medium chain mono and di- glycerides, medium chain triglycerides, polyethylene glycol, polyvinyl acetate phthalate, propylene glycol, purified water, and titanium dioxide. Chemical Structure Chemical Structure

BIJUVA (estradiol and progesterone) is an oval shaped opaque capsule in which the estradiol is solubilized and the progesterone is micronized and suspended in the mixture of medium chain mono and di-glycerides and lauroyl polyoxyl-32 glycerides. Each 0.5 mg/100 mg capsule is light pink on one side, dark pink on the other side, and printed with "5C1" in white ink. Each 1 mg/100 mg capsule is light pink on one side, dark pink on the other side, and printed with "1C1" in white ink. Estradiol (estra-1,3,5 (10)-triene-3,17β-diol), an estrogen, has a molecular weight of 272.38, and chemical formula C 18 H 24 O 2 . Progesterone (pregn-4-ene-3, 20-dione) has a molecular weight of 314.47, and chemical formula C 21 H 30 O 2 . The structural formulas are as follows: Estradiol Progesterone Each BIJUVA (estradiol and progesterone) capsule contains the following inactive ingredients: ammonium hydroxide, ethanol, ethyl acetate, FD&C Red #40, gelatin, glycerin, hydrolyzed gelatin, isopropyl alcohol, lauroyl polyoxyl-32 glycerides, lecithin, medium chain mono and di-glycerides, medium chain triglycerides, polyethylene glycol, polyvinyl acetate phthalate, propylene glycol, purified water, and titanium dioxide. Structural Formula Structural Formula

Climara (estradiol transdermal system), is designed to release estradiol continuously upon application to intact skin. Six (6.5, 9.375, 12.5, 15, 18.75 and 25 cm 2 ) systems are available to provide nominal in vivo delivery of 0.025, 0.0375, 0.05, 0.06, 0.075 or 0.1 mg respectively of estradiol per day. The period of use is 7 days. Each system has a contact surface area of either 6.5, 9.375, 12.5, 15, 18.75 or 25 cm 2 , and contains 2, 2.85, 3.8, 4.55, 5.7 or 7.6 mg of estradiol USP respectively. The composition of the systems per unit area is identical. Estradiol USP is a white, crystalline powder, chemically described as estra-1,3,5(10)-triene-3, 17β-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.38. The structural formula is: The Climara transdermal system comprises three layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are: 1. A translucent polyethylene film. 2. An acrylate adhesive matrix containing estradiol USP. 3. A protective liner of siliconized or fluoropolymer-coated polyester film is attached to the adhesive surface and must be removed before the system can be used. The active component of the transdermal system is estradiol. The remaining components of the transdermal system (acrylate copolymer adhesive, fatty acid esters, and polyethylene backing) are pharmacologically inactive. Chemical Structure Patch Diagram

Climara Pro (estradiol/levonorgestrel transdermal system) is an adhesive-based matrix transdermal patch designed to release both estradiol and levonorgestrel, a progestational agent, continuously upon application to intact skin. The 22 cm 2 Climara Pro system contains 4.4 mg estradiol and 1.39 mg levonorgestrel and provides a nominal delivery rate (mg per day) of 0.045 estradiol and 0.015 levonorgestrel. Estradiol USP has a molecular weight of 272.39 and the molecular formula is C 18 H 24 O 2 . Levonorgestrel USP has a molecular weight of 312.4 and a molecular formula of C 21 H 28 O 2 . The structural formulas for estradiol and levonorgestrel are: The Climara Pro transdermal system comprises 3 layers. Proceeding from the visible surface towards the surface attached to the skin, these layers are: 1. A translucent polyethylene backing film. 2. An acrylate adhesive matrix containing estradiol and levonorgestrel. 3. A protective liner of either siliconized or fluoropolymer coated polyester film. The protective liner is attached to the adhesive surface and must be removed before the system can be used. The active components of the transdermal system are estradiol and levonorgestrel. The remaining components of the transdermal system (acrylate copolymer adhesive and polyvinylpyrrolidone/vinyl acetate copolymer) are pharmacologically inactive. Chemical structure diagram patch

CombiPatch ® (estradiol/norethindrone acetate transdermal system) is an adhesive-based matrix transdermal patch designed to release both estradiol, an estrogen, and norethindrone acetate (NETA), a progestational agent, continuously upon application to intact skin. Two systems are available, providing the following in vivo delivery rates of estradiol and NETA. 1 NETA=norethindrone acetate. 2 Based on in vivo/in vitro flux data, delivery of both components per day via skin of average permeability (interindividual variation in skin permeability is approximately 20 percent). System Size Estradiol (mg) NETA 1 (mg) Nominal Delivery Rate 2 (mg per day) Estradiol / NETA 9 cm 2 round 0.62 2.7 0.05/0.14 16 cm 2 round 0.51 4.8 0.05/0.25 Estradiol USP (estradiol) is a white to creamy white, odorless, crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17 β -diol. The molecular weight of estradiol is 272.39 and the molecular formula is C 18 H 24 O 2 . NETA USP is a white to creamy white, odorless, crystalline powder, chemically described as 17-hydroxy-19-nor-17α-pregn-4-en-20-yn-3-one acetate. The molecular weight of NETA is 340.47 and the molecular formula is C 22 H 28 O 3 . The structural formulas for estradiol and NETA are: CombiPatch is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) a translucent polyolefin film backing, (2) an adhesive layer containing estradiol, NETA, acrylic adhesive, silicone adhesive, oleic acid NF, povidone USP and dipropylene glycol, and (3) a polyester release protective liner, which is attached to the adhesive surface and must be removed before the system can be used. The active components of the system are estradiol USP and NETA USP. The remaining components of the system are pharmacologically inactive. Chemical Structure Layer

Divigel (estradiol gel) 0.1 percent, is a clear, colorless gel, which is odorless when dry. It is designed to deliver sustained circulating concentrations of estradiol when applied once daily to the skin. The gel is applied to a small area (200 cm 2 ) of the thigh in a thin layer. Divigel is available in five doses of 0.25, 0.5, 0.75, 1.0, and 1.25 grams for topical application (corresponding to 0.25, 0.5, 0.75, 1.0, and 1.25 mg estradiol, respectively). The active component of the topical gel is estradiol. Estradiol is a white crystalline powder, chemically described as estra-1,3,5(10)-triene-3,17ß-diol. It has an empirical formula of C 18 H 24 O 2 and molecular weight of 272.39. The structural formula is: Divigel Chemical Structure The remaining components of the gel (carbomer, ethanol, propylene glycol, purified water, and triethanolamine) are pharmacologically inactive. Divigel Chemical Structure

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP. 1 2

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

DOTTI (estradiol transdermal system, USP) contains estradiol, USP in a multipolymeric adhesive. The system is designed to release estradiol, USP continuously upon application to intact skin. Five dosage strengths of DOTTI are available to provide nominal in vivo delivery rates of 0.025, 0.0375, 0.05, 0.075, or 0.1 mg of estradiol, USP per day via the skin. Each corresponding system has an active surface area of 1.89, 2.83, 3.78, 5.66, or 7.55 cm 2 and contains 0.314, 0.470, 0.627, 0.940, or 1.253 mg of estradiol USP, respectively. The composition of the systems per unit area is identical. Estradiol, USP is a white to practically white powder, chemically described as estra-1,3,5 (10)- triene-3,17β-diol. The structural formula is: The molecular formula of estradiol, USP is C 18 H 24 0 2 . The molecular weight is 272.39 g/mol. DOTTI is comprised of 3 layers. Proceeding from the visible surface toward the surface attached to the skin, these layers are (1) polyester and ethylene vinyl acetate copolymer film (2) an adhesive formulation containing estradiol USP, acrylic adhesive, silicone adhesive, oleyl alcohol, NF, povidone, USP and dipropylene glycol, and (3) a polyester release liner which is attached to the adhesive surface and must be removed before the system can be used. The active component of the system is estradiol, USP. The remaining components of the system are pharmacologically inactive. FDA approved acceptance criteria for dissolution test specifications differ from USP.

Uses Topical gel, applied to skin