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Diclofenac sodium delayed-release tablets is a benzene-acetic acid derivative. Diclofenac sodium is a white or slightly yellowish crystalline powder and is sparingly soluble in water at 25°C. The chemical name is 2-[(2,6-dichlorophenyl)amino] benzeneacetic acid, monosodium salt. The molecular weight is 318.14. Its molecular formula is C 14 H 10 Cl 2 NNaO 2 , and it has the following structural formula The inactive ingredients in diclofenac sodium delayed-release tablets include: hydroxypropyl methylcellulose, lactose monohydrate, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene glycol, povidone, propylene glycol, sodium starch glycolate, talc, titanium dioxide, triethyl citrate and ink fine black. Figure

Diclofenac sodium delayed-release tablets is a benzene-acetic acid derivative. Diclofenac sodium is a white or slightly yellowish crystalline powder and is sparingly soluble in water at 25°C. The chemical name is 2-[(2,6-dichlorophenyl)amino] benzeneacetic acid, monosodium salt. The molecular weight is 318.14. Its molecular formula is C 14 H 10 Cl 2 NNaO 2 , and it has the following structural formula The inactive ingredients in diclofenac sodium delayed-release tablets include: hydroxypropyl methylcellulose, lactose monohydrate, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene glycol, povidone, propylene glycol, sodium starch glycolate, talc, titanium dioxide, triethyl citrate and ink fine black. Figure

Diclofenac sodium and misoprostol delayed-release tablets, USP is a combination product containing diclofenac sodium, an NSAID with analgesic properties, and misoprostol, a gastrointestinal (GI) mucosal protective prostaglandin-1 (PGE1) analog. Diclofenac sodium and misoprostol delayed-release tablets are white to off-white, round, biconvex, and approximately 11 mm in diameter. Each tablet consists of an enteric-coated core containing 50 mg (diclofenac sodium and misoprostol delayed-release tablets 50 mg/200 mcg) or 75 mg (diclofenac sodium and misoprostol delayed-release tablets 75 mg/200 mcg) of diclofenac sodium (equivalent to 46.39 mg or 69.58 mg of diclofenac, respectively) surrounded by an outer mantle containing 200 mcg misoprostol. Diclofenac sodium, USP is a phenylacetic acid derivative that is a white to off-white, virtually odorless, crystalline powder. Diclofenac sodium, USP is freely soluble in methanol, soluble in ethanol, and practically insoluble in chloroform and in dilute acid. Diclofenac sodium, USP is sparingly soluble in water. Its chemical formula and name are: C 14 H 10 Cl 2 NO 2 Na [M.W. = 318.14] 2-[(2,6-dichlorophenyl) amino] benzeneacetic acid, monosodium salt. Misoprostol is a water-soluble, viscous liquid that contains approximately equal amounts of two diastereomers. Its chemical formula and name are: C 22 H 38 O 5 [M.W. = 382.54] (±) methyl 11α,16-dihydroxy-16-methyl-9-oxoprost-13E-en-1-oate. Inactive ingredients in diclofenac sodium and misoprostol delayed-release tablets include: colloidal silicon dioxide; corn starch; crospovidone; hydrogenated castor oil; hypromellose; lactose monohydrate; magnesium stearate; methacrylic acid copolymer; microcrystalline cellulose; povidone; sodium hydroxide; talc; triethyl citrate.

Diclona™ is comprised of a gel inside of a 3.5oz tube containing 4.5% Lidocaine and 1% Diclofenac Sodium. Inactive ingredients: Aloe Barbadensis (Aloe Vera) Leaf Juice, Arnica Montana Flower Extract, Boswellia Serrata Extract, Carbomer, Dimethyl Sulfoxide, Ethylhexylglycerin, Eucalyptus Globulus Leaf Oil, Methylsulfonylmethane, Phenoxyethanol, Prunus Amygdalus Dulcis (Sweet Almond) Oil, SD Alcohol 40-B, Sorbitol, Water.

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent available in the following dosage forms: • Dicyclomine Hydrochloride Capsules, USP for oral use contain 10 mg of dicyclomine hydrochloride, USP. In addition, each capsule contains the following inactive ingredients: lactose monohydrate, calcium sulfate, magnesium stearate, gelatin, FD&C Blue No. 1, and FD&C Red No. 3. • Dicyclomine Hydrochloride Tablets, USP for oral use contain 20 mg dicyclomine hydrochloride, USP. In addition, each tablet contains the following inactive ingredients: acacia, pregelatinized starch, anhydrous lactose, compressible sugar, dicalcium phosphate, colloidal silicon dioxide, magnesium stearate, stearic acid, and FD & C Blue No.1 Aluminum Lake. Dicyclomine hydrochloride is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Dicyclomine hydrochloride occurs as a fine, white, crystalline, practically odorless powder with a bitter taste. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. dicyclomine-hcl-molec-struc

Dicyclomine hydrochloride, USP is an antispasmodic and anticholinergic (antimuscarinic) agent available in the following dosage forms: • Dicyclomine hydrochloride tablets, USP, 20 mg for oral use contain 20 mg dicyclomine hydrochloride, USP. Dicyclomine hydrochloride tanlets, USP, 20 mg also contain inactive ingredients: colloidal silicon dioxide, FD&C Blue #1, hypromellose, lactose monohydrate, sodium starch glycolate, and stearic acid. Dicyclomine hydrochloride, USP is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Molecular weight: 345.95 Dicyclomine hydrochloride, USP occurs as a fine, white, crystalline, practically odorless powder with a bitter taste. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. image description

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent. Chemically, dicyclomine hydrochloride is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride with the following structural formula, molecular weight, and molecular formula: Dicyclomine hydrochloride, USP occurs as a white crystalline powder. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. Dicyclomine hydrochloride tablets, USP for oral administration contain 20 mg of dicyclomine hydrochloride, USP. In addition each tablet contains the following inactive ingredients: anhydrous lactose, colloidal silicon dioxide, FD&C Blue No. 1 Aluminum Lake, magnesium stearate, microcrystalline cellulose, pregelatinized starch (corn) and sodium lauryl sulfate. Chemical Formula

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent available in the following dosage forms: • Dicyclomine Hydrochloride Capsules, USP for oral use contain 10 mg of dicyclomine hydrochloride, USP. In addition, each capsule contains the following inactive ingredients: lactose monohydrate, calcium sulfate, magnesium stearate, gelatin, FD&C Blue No. 1, and FD&C Red No. 3. • Dicyclomine Hydrochloride Tablets, USP for oral use contain 20 mg dicyclomine hydrochloride, USP. In addition, each tablet contains the following inactive ingredients: acacia, pregelatinized starch, anhydrous lactose, compressible sugar, dicalcium phosphate, colloidal silicon dioxide, magnesium stearate, stearic acid, and FD & C Blue No.1 Aluminum Lake. Dicyclomine hydrochloride is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Dicyclomine hydrochloride occurs as a fine, white, crystalline, practically odorless powder with a bitter taste. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. dicyclomine-hcl-molec-struc

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent. Dicyclomine hydrochloride tablets, USP for oral use contain 20 mg dicyclomine hydrochloride, USP. Dicyclomine hydrochloride tablets, USP 20 mg also contain inactive ingredients: colloidal silicon dioxide, dibasic calcium phosphate dihydrate, FD&C blue 1, lactose monohydrate, magnesium stearate, pregelatinized starch, and sodium starch glycolate. Dicyclomine hydrochloride is [bicyclohexyl]-1‑-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Molecular weight: 345.95 g/mol Dicyclomine hydrochloride, USP is a white, crystalline powder. It is freely soluble in chloroform, methanol, ethanol (96 %), and methylene chloride, soluble in water, and very slightly soluble in ether. FDA approved dissolution test specifications differ from USP. Dicyclomine Hydrochloride structural formula

Dicyclomine hydrochloride capsules, USP, are antispasmodic and anticholinergic (antimuscarinic) agent available in the following dosage forms: • Dicyclomine Hydrochloride Capsules, USP, 10 mg for oral use contain 10 mg of dicyclomine hydrochloride, USP. In addition, each capsule contains the following inactive ingredients: lactose monohydrate, calcium sulfate, magnesium stearate, gelatin, titanium dioxide, sodium lauryl sulfate, and iron oxide black. Dicyclomine hydrochloride, USP is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Dicyclomine hydrochloride occurs as a fine, white, crystalline, practically odorless powder with a bitter taste. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. FDA approved dissolution test specifications differ from USP. image description

Dicyclomine hydrochloride, USP is an antispasmodic and anticholinergic (antimuscarinic) agent available in the following dosage forms: • Dicyclomine hydrochloride capsules, USP for oral use contain 10 mg dicyclomine hydrochloride, USP. Dicyclomine hydrochloride USP, 10 mg capsules also contain inactive ingredients: ammonium hydroxide, D&C Red No. 28, FD&C Blue No. 1, gelatin, magnesium stearate, pregelatinized corn starch, propylene glycol, shellac, simethicone, and titanium dioxide. • Dicyclomine hydrochloride tablets, USP for oral use contain 20 mg dicyclomine hydrochloride, USP. Dicyclomine hydrochloride USP, 20 mg tablets also contain the following inactive ingredients: colloidal silicon dioxide, corn starch, FD&C Blue No. 1 Aluminum Lake, hypromellose, lactose monohydrate, sodium starch glycolate, and stearic acid. Dicyclomine hydrochloride, USP is [bicyclohexyl]-1-carboxylic acid, 2-(diethylamino) ethyl ester, hydrochloride, with a molecular formula of C 19 H 35 NO 2 •HCl and the following structural formula: Molecular weight: 345.95 Dicyclomine hydrochloride, USP occurs as a fine, white, crystalline, practically odorless powder with a bitter taste. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. Dicyclomine Hydrochloride structural formula

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent. Chemically, dicyclomine hydrochloride is [bicyclohexyl]-1-carboxylicn acid, 2-(diethylamino) ethyl ester, hydrochloride with the following structural formula, molecular weight, and molecular formula: Dicyclomine hydrochloride, USP occurs as a white crystalline powder. It is soluble in water, freely soluble in alcohol and chloroform, and very slightly soluble in ether. Dicyclomine hydrochloride capsules, USP for oral administration, contain 10 mg of dicyclomine hydrochloride, USP. Each capsule contains the following inactive ingredients: anhydrous lactose, colloidal silicon dioxide, FD&C Blue No. 1, gelatin, magnesium stearate, microcrystalline cellulose, pregelatinized starch (corn), and sodium lauryl sulfate and titanium dioxide. The capsules are imprinted with black ink containing black iron oxide, potassium hydroxide, propylene glycol and shellac. Chemical Formula

Diltiazem hydrochloride is a calcium ion cellular influx inhibitor (slow channel blocker or calcium antagonist). Chemically, diltiazem hydrochloride is 1, 5-Benzothiazepin-4(5 H )-one, 3-(acetyloxy)-5-[2-(dimethylamino) ethyl]-2, 3-dihydro-2-(4-methoxyphenyl)-, monohydrochloride,(+)- cis -. The chemical structure is: Diltiazem hydrochloride, USP is a white to off-white crystalline powder with a bitter taste. It is soluble in water, methanol, and chloroform. It has a molecular weight of 450.98. Diltiazem hydrochloride extended-release capsule, USP is formulated as a once-a-day extended-release capsule containing 120 mg diltiazem hydrochloride (equivalent to 110.3 mg diltiazem), 180 mg diltiazem hydrochloride (equivalent to 165.45 mg diltiazem), 240 mg diltiazem hydrochloride (equivalent to 220.6 mg diltiazem), 300 mg diltiazem hydrochloride (equivalent to 275.75 mg diltiazem), or 360 mg diltiazem hydrochloride (equivalent to 330.9 mg diltiazem). Capsules also contain: hypromellose, sucrose, starch (maize), methacrylic acid and ethyl acrylate copolymer, triethyl citrate, talc, hydroxypropylcellulose, ammonio methacrylate copolymer, ethylcellulose, diethyl phthalate, magnesium stearate, titanium dioxide, polydextrose, triacetin, Macrogol/PEG, gelatin, sodium lauryl sulphate, shellac, potassium hydroxide, black iron oxide, FD&C Blue #1(180 mg, 240 mg, 300 mg and 360 mg) and FD&C Yellow#6 (180 mg and 240 mg). For oral administration. Product meets USP dissolution test 24. Image

Uses • temporarily relieves cough due to minor throat and bronchial irritation occurring with a cold, and nasal congestion due to the common cold, hay fever or other upper respiratory allergies • temporarily relieves these symptoms due to hay fever (allergic rhinitis): • runny nose • sneezing • itchy, watery eyes • itching of the nose or throat • temporarily restores freer breathing through the nose

Uses: • Temporarily relieves these symptoms associated with the common cold, hay fever, or other respiratory allergies. • Sneezing. • Nasal congestion. • Runny nose. • Itchy, watery eyes.

Uses • temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: o runny nose o sneezing o itchy, watery eyes o itching of the nose or throat

Use 25 MG • Temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: o runny nose o sneezing o itchy, watery eyes o itchy throat and nose • Temporarily relieves these symptoms due to the common cold: o runny nose o sneezing 50 MG • Temporarily relieves these symptoms due to hay fever or other upper respiratory allergies and common cold o sneezing o runny nose o itchy, watery eyes o itchy throat and nose

Uses  temporarily relieves these symptoms due to hay fever or other upper respiratory allergies:  runny nose  sneezing  itchy, watery eyes  itching of the nose or throat

Each diphenoxylate hydrochloride and atropine sulfate tablet, USP contains: 2.5 mg of diphenoxylate hydrochloride, USP (equivalent to 2.3 mg of diphenoxylate) and 0.025 mg of atropine sulfate, USP (equivalent to 0.01 mg of atropine) Diphenoxylate hydrochloride, an antidiarrheal, is ethyl 1-(3-cyano-3,3-diphenylpropyl)-4-phenylisonipecotate monohydrochloride and has the following structural formula: Atropine sulfate, an anticholinergic, is endo-(±)-alpha-(hydroxymethyl) benzeneacetic acid 8-methyl-8- azabicylo[3.2.1] oct-3-yl ester sulfate (2:1)] (salt) monohydrate and has the following structural formula: A subtherapeutic amount of atropine sulfate is present to discourage deliberate overdosage. Inactive ingredients of diphenoxylate hydrochloride and atropine sulfate tablets include colloidal silicon dioxide, lactose monohydrate, microcrystalline cellulose, pregelatinized starch and stearic acid. ChemicalStructureDiphen ChemicalStructureAtropine

Divalproex sodium is a stable coordination compound comprised of sodium valproate and valproic acid in a 1:1 molar relationship. Chemically it is designated as sodium hydrogen bis(2-propylpentanoate). Divalproex sodium has the following structure: Divalproex sodium occurs as a white powder with a characteristic odor. Divalproex sodium delayed-release tablets are for oral administration. Divalproex sodium delayed-release tablets, USP are supplied in three dosage strengths containing divalproex sodium USP equivalent to 125 mg, 250 mg, or 500 mg of valproic acid. Inactive Ingredients Divalproex sodium delayed-release tablets: colloidal silicon dioxide, corn starch, povidone, pregelatinized maize starch, hypromellose, titanium dioxide, triacetin, methacrylic acid copolymer type C, talc, triethyl citrate, colloidal anhydrous silica, sodium bicarbonate, and sodium lauryl sulfate. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol, and ammonium hydroxide. In addition, individual tablets contain: 125 mg tablets: FD&C Red #40, and FD&C Blue #2 250 mg tablets: FD&C Yellow #6, and iron oxide yellow 500 mg tablets: D&C Red #30, FD&C Blue #2, and iron oxide red spl-divalproex-structure

Divalproex sodium is a stable co-ordination compound comprised of sodium valproate and valproic acid in a 1:1 molar relationship and formed during the partial neutralization of valproic acid with 0.5 equivalent of sodium hydroxide. Chemically it is designated as sodium hydrogen bis(2-propylpentanoate). Divalproex sodium has the following structure: Image 1 Divalproex sodium occurs as a white to off white powder. Divalproex sodium extended-release 250 mg and 500 mg tablets are for oral administration. Divalproex sodium extended-release tablets, USP contain divalproex sodium in a once-a-day extended-release formulation equivalent to 250 mg and 500 mg of valproic acid. Inactive Ingredients Divalproex Sodium Extended-Release Tablets USP, 250 mg and 500 mg: ethyl acrylate and methyl methacrylate copolymer dispersion, ethyl cellulose, hypromellose, iron oxide black (ferrosoferric oxide), lactose monohydrate, magnesium stearate, microcrystalline cellulose, propylene glycol, polyethylene glycol, polyvinyl alcohol, shellac, silicon dioxide, talc, and titanium dioxide. In addition, 500 mg tablets contain iron oxide red and iron oxide yellow. Divalproex sodium extended-release tablets USP meet USP Dissolution Test 11. Image 1

Uses • relieves occasional constipation (irregularity) • generally produces bowel movement in 12 to 72 hours

Doxazosin mesylate is a quinazoline compound that is a selective inhibitor of the alpha 1 subtype of alpha-adrenergic receptors. The chemical name of doxazosin mesylate is 1-(4-amino-6,7- dimethoxy-2-quinazolinyl)-4-(1,4-benzodioxan-2-ylcarbonyl) piperazine methanesulfonate. The empirical formula for doxazosin mesylate is C 23 H 25 N 5 O 5 • CH 4 O 3 S and the molecular weight is 547.6. It has the following structure: Doxazosin mesylate is freely soluble in dimethylsulfoxide, soluble in dimethylformamide, slightly soluble in methanol, ethanol, and water (0.8% at 25°C), and very slightly soluble in acetone and methylene chloride. Each doxazosin tablet, USP, for oral administration, contains 1 mg, 2 mg, 4 mg and 8 mg of doxazosin as the free base. In addition, each doxazosin tablet, USP contains the following inactive ingredients: croscarmellose sodium, lactose monohydrate, magnesium stearate and microcrystalline cellulose. doxazosin-structure.jpg

Doxazosin mesylate is a quinazoline compound that is a selective inhibitor of the alpha 1 subtype of alpha-adrenergic receptors. The chemical name of doxazosin mesylate is 1-(4-amino-6,7- dimethoxy-2-quinazolinyl)-4-(1,4-benzodioxan-2-ylcarbonyl) piperazine methanesulfonate. The empirical formula for doxazosin mesylate is C 23 H 25 N 5 O 5 • CH 4 O 3 S and the molecular weight is 547.6. It has the following structure: Doxazosin mesylate is freely soluble in dimethylsulfoxide, soluble in dimethylformamide, slightly soluble in methanol, ethanol, and water (0.8% at 25°C), and very slightly soluble in acetone and methylene chloride. Each doxazosin tablet, USP, for oral administration, contains 1 mg, 2 mg, 4 mg and 8 mg of doxazosin as the free base. In addition, each doxazosin tablet, USP contains the following inactive ingredients: croscarmellose sodium, lactose monohydrate, magnesium stearate and microcrystalline cellulose. doxazosin-structure.jpg

To reduce the development of drug-resistant bacteria and maintain the effectiveness of doxycycline and other antibacterial drugs, doxycycline should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. DESCRIPTION Doxycycline is an antibacterial drug synthetically derived from oxytetracycline, and is available as capsules of doxycycline hyclate for oral administration. The structural formula of doxycycline monohydrate is with a molecular formula of C 22 H 24 N 2 O 8 ∙H 2 O and a molecular weight of 462.46. The chemical designation for doxycycline is 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a- octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2- naphthacenecarboxamide monohydrate. The molecular formula for doxycycline hydrochloride hemiethanolate hemihydrate is (C 22 H 24 N 2 O 8 ∙HCl) 2 ∙C 2 H 6 O∙H 2 O and the molecular weight is 1025.89. Doxycycline is a light-yellow crystalline powder. Doxycycline hyclate is soluble in water, while doxycycline monohydrate is very slightly soluble in water. Doxycycline has a high degree of lipoid solubility and a low affinity for calcium binding. It is highly stable in normal human serum. Doxycycline will not degrade into an epianhydro form. Inert ingredients in the capsule formulations are: FD&C Blue 1, gelatin, magnesium stearate, iron oxide, microcrystalline cellulose, potassium hydroxide, shellac, sodium lauryl sulfate, and titanium dioxide. structure

Doxycycline is an antibacterial drug synthetically derived from oxytetracycline, and is available as doxycycline hyclate tablets, USP. The structural formula of doxycycline monohydrate is with a molecular formula of C 22 H 24 N 2 O 8 ∙H 2 O and a molecular weight of 462.46. The chemical designation for doxycycline is 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide monohydrate. The molecular formula for doxycycline hydrochloride hemiethanolate hemihydrate is (C 22 H 24 N 2 O 8 ∙HCl) 2 ∙C 2 H 6 O∙H 2 O and the molecular weight is 1025.89. Doxycycline is a light-yellow crystalline powder. Doxycycline hyclate is soluble in water, while doxycycline monohydrate is very slightly soluble in water. Doxycycline has a high degree of lipoid solubility and a low affinity for calcium binding. It is highly stable in normal human serum. Doxycycline will not degrade into an epianhydro form. Inert ingredients for the tablet formulation are: croscarmellose sodium, ferric oxide red, ferric oxide yellow, hypromellose, magnesium stearate, microcrystalline cellulose PH112, polyethylene glycol, silicon dioxide, titanium dioxide and water. FDA approved dissolution test specifications differ from USP. Chemical Structure

Doxycycline is an antibacterial drug synthetically derived from oxytetracycline, and is available as Doxycycline Hyclate Tablets and Capsules and Doxycycline for Oral Suspension; for oral administration. The structural formula of doxycycline monohydrate is with a molecular formula of C 22 H 24 N 2 O 8 ∙H 2 O and a molecular weight of 462.46. The chemical designation for doxycycline is 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenecarboxamide monohydrate. The molecular formula for doxycycline hydrochloride hemiethanolate hemihydrate is (C 22 H 24 N 2 O 8 ∙HCl) 2 ∙C 2 H 6 O∙H 2 O and the molecular weight is 1025.89. Doxycycline is a light-yellow crystalline powder. Doxycycline hyclate is soluble in water, while doxycycline monohydrate is very slightly soluble in water. Doxycycline has a high degree of lipoid solubility and a low affinity for calcium binding. It is highly stable in normal human serum. Doxycycline will not degrade into an epianhydro form. Inactive ingredients in the capsule formulations are: colloidal silicon dioxide, lactose anhydrous, magnesium stearate, methylcellulose, microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, and stearic acid. 50 mg gelatin capsule shell contains: FD&C Blue #1, D&C Yellow #10, titanium dioxide and gelatin. 100 mg gelatin capsule shell contains: FD&C Blue #1, titanium dioxide and gelatin. Black ink contains shellac glaze in SD-45, black iron oxide, propylene glycol, FD&C Blue #2, FD&C Red # 40, FD&C Blue # 1, D&C Yellow # 10, butyl alcohol, denatured alcohol. Each capsule, for oral administration, contains doxycycline hyclate equivalent to 50 mg or 100 mg of doxycycline. Inactive ingredients for the oral suspension formulation are: confectioner's sugar, D&C red #27 aluminum lake, methylparaben, microcrystalline cellulose/ sodium carboxymethylcellulose, natural raspberry flavor; propylparaben, simethicone and sucrose. When reconstituted, each teaspoonful (5 mL) doxycycline suspension, for oral administration, contains doxycycline monohydrate equivalent to 25 mg of doxycycline. Inactive ingredients for the tablet formulation are: anhydrous lactose, colloidal silicon dioxide, FD&C Red No. 40, FD&C Yellow No. 6, hypromellose, magnesium stearate, methylcellulose, microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, stearic acid, and titanium dioxide. Each tablet, for oral administration, contains doxycycline hyclate equivalent to 50 mg or 100 mg doxycycline. Doxycycline Hyclate Tablets, USP meets USP Dissolution test 3. Chemical Structure

Econazole nitrate cream contains the antifungal agent, econazole nitrate USP 1%, in a water-miscible base consisting of benzoic acid, butylated hydroxytoluene, mineral oil, oleoyl polyoxylglycerides PEG-6-32 stearate/glycol stearate and purified water. The white to off-white soft cream is for topical use only. Chemically, econazole nitrate is 1-[2-{(4-chloro-phenyl) methoxy}-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole mononitrate. Its structure is as follows: Chemical Structure

Econazole Nitrate Cream contains the antifungal agent, econazole nitrate 1%, in a water-miscible base consisting of benzoic acid, butylated hydroxyanisole, mineral oil, peglicol 5 oleate, pegoxol-7 stearate, and purified water. The white to off-white soft cream is for topical use only. Chemically, econazole nitrate is 1-[2-{(4-chlorophenyl)methoxy}-2-(2,4-dichlorophenyl)ethyl]-1H-imidazole mononitrate. Its structure is as follows: Structural Formula Image

Enalapril maleate is the maleate salt of enalapril, the ethyl ester of a long-acting angiotensin-converting enzyme inhibitor, enalaprilat. Enalapril maleate is chemically described as (S)-1-[ N -[1-(ethoxycarbonyl)-3-phenylpropyl]-L-alanyl]-L-proline, (Z) -2-butenedioate salt (1:1). Its empirical formula is C 20 H 28 N 2 O 5 •C 4 H 4 O 4 , and its structural formula is: Enalapril maleate, USP, is a white to off-white, crystalline powder with a molecular weight of 492.53. It is sparingly soluble in water, soluble in ethanol, and freely soluble in methanol. Enalapril is a pro-drug; following oral administration, it is bioactivated by hydrolysis of the ethyl ester to enalaprilat, which is the active angiotensin-converting enzyme inhibitor. Enalapril maleate is supplied as 2.5 mg, 5 mg, 10 mg, and 20 mg tablets for oral administration. In addition to the active ingredient enalapril maleate, each tablet contains the following inactive ingredients: corn starch, lactose monohydrate, magnesium stearate, pregelatinized starch and sodium bicarbonate. The 10 mg tablets also contain red ferric oxide, and 20 mg tablets also contain yellow ferric oxide. structural formula

Enalapril maleate is the maleate salt of enalapril, the ethyl ester of a long-acting angiotensin-converting enzyme inhibitor, enalaprilat. Enalapril maleate is chemically described as (S)-1-[ N -[1-(ethoxycarbonyl)-3-phenylpropyl]-L-alanyl]-L-proline, (Z) -2-butenedioate salt (1:1). Its empirical formula is C 20 H 28 N 2 O 5 •C 4 H 4 O 4 , and its structural formula is: Enalapril maleate, USP, is a white to off-white, crystalline powder with a molecular weight of 492.53. It is sparingly soluble in water, soluble in ethanol, and freely soluble in methanol. Enalapril is a pro-drug; following oral administration, it is bioactivated by hydrolysis of the ethyl ester to enalaprilat, which is the active angiotensin-converting enzyme inhibitor. Enalapril maleate is supplied as 2.5 mg, 5 mg, 10 mg, and 20 mg tablets for oral administration. In addition to the active ingredient enalapril maleate, each tablet contains the following inactive ingredients: corn starch, lactose monohydrate, magnesium stearate, pregelatinized starch and sodium bicarbonate. The 10 mg tablets also contain red ferric oxide, and 20 mg tablets also contain yellow ferric oxide. structural formula

Ergocalciferol Capsules, USP is a synthetic calcium regulator for oral administration. Ergocalciferol is a white, colorless crystal, insoluble in water, soluble in organic solvents, and slightly soluble in vegetable oils. It is affected by air and by light. Ergosterol or provitamin D 2 is found in plants and yeast and has no antirachitic activity. There are more than 10 substances belonging to a group of steroid compounds, classified as having vitamin D or antirachitic activity. One USP unit of vitamin D 2 is equivalent to one International Unit (IU), and 1 mcg of vitamin D 2 is equal to 40 IU. Each capsule contains 1.25 mg (50,000 International Units vitamin D) of ergocalciferol, USP, in an edible vegetable oil. Ergocalciferol, also called vitamin D 2 , is 9, 10-secoergosta-5, 7, 10(19), 22-tetraen-3-ol, (3ß, 5Z, 7E, 22E)-; (C 28 H 44 O) with a molecular weight of 396.65, and has the following structural formula: Inactive Ingredients: Butylated hydroxytoluene, D&C Yellow #10, FD&C Blue #1, Gelatin, Glycerin, Propylene Glycol, Shellac, Simethicone, Soybean oil and Titanium Dioxide. chemical-formula.jpg

Erythromycin ophthalmic ointment, USP belongs to the macrolide group of antibiotics. The sterile ophthalmic ointment flows freely over the conjunctiva. Erythromycin base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. Erythromycin is an antibiotic produced from a strain of Streptomyces erythraeus . It is basic and readily forms a salt when combined with an acid. It has the following structural formula: Molecular Formula: C 37 H 67 NO 13 Mol. Wt. 733.94 Chemical Name: ((3R ● ,4S ● ,5S ● ,6R ● ,7R ● ,9R ● ,11R ● ,12R ● ,13S ● ,14R ● )-4-[(2,6-dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)- β -D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione) Each gram contains: Active: erythromycin USP, 5 mg (0.5%); Inactives: mineral oil and white petrolatum. ChemStructure

Erythromycin Ophthalmic Ointment belongs to the macrolide group of antibiotics. It is basic and readily forms a salt when combined with an acid. The base, as crystals or powder, is slightly soluble in water, moderately soluble in ether, and readily soluble in alcohol or chloroform. Erythromycin ((3R*,4S*,5S*,6R*,7R*,9R*,11R*,12R*,13S*,14R*)-4-[(2,6-dideoxy-3- C -methyl-3- 0 -methyl-α-L- ribo -hexopyranosyl)oxy]-14-ethyl-7,12,13-trihydroxy-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-ß-D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione) is antibiotic produced from a strain of Streptomyces erythraeus . It has the following structural formula: Each gram contains Erythromycin USP 5 mg in a sterile ophthalmic base of mineral oil and white petrolatum. Structure Image

Escitalopram tablets contain escitalopram, a selective serotonin reuptake inhibitor (SSRI), present as escitalopram oxalate salt. Escitalopram is the pure S- enantiomer (single isomer) of the racemic bicyclic phthalane derivative citalopram. Escitalopram oxalate is designated S-(+)-1- [3-(dimethyl-amino)propyl]-1-(p-fluorophenyl)-5-phthalancarbonitrile oxalate with the following structural formula: The molecular formula is C 20 H 21 FN 2 O • C 2 H 2 O 4 and the molecular weight is 414.40. Escitalopram oxalate, USP occurs as a fine, white to slightly-yellow powder and is freely soluble in methanol and dimethyl sulfoxide (DMSO), soluble in isotonic saline solution, sparingly soluble in water and ethanol, slightly soluble in ethyl acetate, and insoluble in heptane. Escitalopram tablets, USP are white to off-white, round, biconvex, film-coated tablets containing 6.38 mg, 12.75 mg and 25.55 mg escitalopram oxalate in strengths equivalent to 5 mg, 10 mg, and 20 mg, respectively, of escitalopram base. The 10 and 20 mg tablets are scored. The tablets also contain the following inactive ingredients: cellulose microcrystalline, colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, povidone and talc. The film coating contains hypromellose, polyethylene glycol 400 and titanium dioxide. Meets USP Dissolution Test 2. 1

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, 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. Structure formula.jpg

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. Structure formula.jpg

Eszopiclone is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-4-Methylpiperazine-1-carboxylic acid 6-(5-chloro-2-pyridyl)-7-oxo-6, 7-dihydro-5 H-pyrrolo [3,4-b]pyrazin-5(S)-yl ester. Its molecular weight is 388.81 g/mol, and its empirical formula is C 17 H 17 ClN 6 O 3 . Eszopiclone has a single chiral center with an ( S )-configuration. It has the following chemical structure: Eszopiclone is a white to light yellow powder. Eszopiclone is slightly soluble in acetone, methanol and alcohol; practically insoluble in water. Eszopiclone is formulated as film-coated tablets for oral administration. Eszopiclone Tablets, USP contain 1 mg, 2 mg, or 3 mg eszopiclone and the following inactive ingredients: anhydrous lactose, colloidal silicon dioxide, croscarmellose sodium, dibasic calcium phosphate anhydrous, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. eszopiclone-chemical-structure

Eszopiclone is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-(5S)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b] pyrazin-5-yl 4-methylpiperazine-1-carboxylate. Its molecular weight is 388.81, and its molecular formula is C 17 H 17 ClN 6 O 3 . Eszopiclone has a single chiral center with an ( S )-configuration. It has the following chemical structure: Eszopiclone USP is a white to light yellow powder. Eszopiclone is very slightly soluble in ethanol. Eszopiclone is formulated as film-coated tablets for oral administration. Eszopiclone tablets contain 1 mg, 2 mg, or 3 mg eszopiclone USP and the following inactive ingredients: croscarmellose sodium, hypromellose, lactose monohydrate, magnesium stearate, microcelac 100 (lactose monohydrate and cellulose, microcrystalline), polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. Meets USP Dissolution Test 2 Chemical Structure

Eszopiclone, USP is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-(5S)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b] pyrazin-5-yl 4-methylpiperazine-1-carboxylate. Its molecular weight is 388.81, and its empirical formula is C 17 H 17 CIN 6 O 3 . Eszopiclone, USP has a single chiral center with an (S)-configuration. It has the following chemical structure: Eszopiclone, USP is a white to light-yellow crystalline solid. Eszopiclone is very slightly soluble in water, slightly soluble in ethanol, and soluble in phosphate buffer (pH 3.2). Eszopiclone, USP is formulated as film-coated tablets for oral administration. Eszopiclone tablets, USP contain 1 mg, 2 mg, or 3 mg eszopiclone, USP and the following inactive ingredients: dibasic calcium phosphate dihydrate, colloidal silicon dioxide, croscarmellose sodium, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. eszopiclone-structure

Eszopiclone, USP is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-(5S)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b] pyrazin-5-yl 4-methylpiperazine-1-carboxylate. Its molecular weight is 388.81, and its empirical formula is C 17 H 17 CIN 6 O 3 . Eszopiclone, USP has a single chiral center with an (S)-configuration. It has the following chemical structure: Eszopiclone, USP is a white to light-yellow crystalline solid. Eszopiclone is very slightly soluble in water, slightly soluble in ethanol, and soluble in phosphate buffer (pH 3.2). Eszopiclone, USP is formulated as film-coated tablets for oral administration. Eszopiclone tablets, USP contain 1 mg, 2 mg, or 3 mg eszopiclone, USP and the following inactive ingredients: dibasic calcium phosphate dihydrate, colloidal silicon dioxide, croscarmellose sodium, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. eszopiclone-structure

Eszopiclone, USP is a nonbenzodiazepine hypnotic agent that is a pyrrolopyrazine derivative of the cyclopyrrolone class. The chemical name of eszopiclone is (+)-(5S)-6-(5-chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b] pyrazin-5-yl 4-methylpiperazine-1-carboxylate. Its molecular weight is 388.81, and its empirical formula is C 17 H 17 CIN 6 O 3 . Eszopiclone, USP has a single chiral center with an (S)-configuration. It has the following chemical structure: Eszopiclone, USP is a white to light-yellow crystalline solid. Eszopiclone is very slightly soluble in water, slightly soluble in ethanol, and soluble in phosphate buffer (pH 3.2). Eszopiclone, USP is formulated as film-coated tablets for oral administration. Eszopiclone tablets, USP contain 1 mg, 2 mg, or 3 mg eszopiclone, USP and the following inactive ingredients: dibasic calcium phosphate dihydrate, colloidal silicon dioxide, croscarmellose sodium, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. In addition, both the 1 mg and 3 mg tablets contain FD&C Blue #2. eszopiclone-structure

Etodolac is member of the pyranocarboxylic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). Each tablet contains etodolac, USP for oral administration. Etodolac is a racemic mixture of [+]S and [-]R-enantiomers. Etodolac, USP is a white crystalline compound, insoluble in water but soluble in alcohols, chloroform, dimethyl sulfoxide, and aqueous polyethylene glycol. The chemical name is (±) 1,8-diethyl-1,3,4,9-tetrahydropyrano-[3,4-b]indole-1-acetic acid. The molecular weight of the base is 287.37. It has a pKa of 4.65 and an n-octanol: water partition coefficient of 11.4 at pH 7.4. The molecular formula for etodolac is C 17 H 21 NO 3 , and it has the following structural formula: Each Tablet, for oral administration, contains 400 mg or 500 mg of Etodolac, USP. In addition, each tablet contains the following inactive ingredients: hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, sodium starch glycolate and titanium dioxide. Each 400 mg tablet also contains iron oxide red and iron oxide yellow. Each 500 mg tablet also contains D&C Yellow No. 10 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake and FD&C Red No. 40 Aluminum Lake.

Etodolac capsules and tablets, USP are members of the pyranocarboxylic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). Each tablet and capsule contains etodolac for oral administration. Etodolac is a racemic mixture of [+]S and [-]R-enantiomers. Etodolac is a white crystalline compound, insoluble in water but soluble in alcohols, chloroform, dimethyl sulfoxide, and aqueous polyethylene glycol. The chemical name is (±) 1,8-diethyl-1,3,4,9-tetrahydropyrano-[3,4-b]indole-1-acetic acid. The molecular weight of the base is 287.37. It has a pKa of 4.65 and an n-octanol: water partition coefficient of 11.4 at pH 7.4. The molecular formula for etodolac is C 17 H 21 NO 3 , and it has the following structural formula: Each Capsule, for oral administration, contains 200 or 300 mg of Etodolac. In addition, each capsule contains the following inactive ingredients: Ammonium Hydroxide USP, Black Iron Oxide USP, Colloidal Silicone Dioxide NF, Erythrosine (200 mg only), Ethyl Alcohol USP, Gelatin, Isopropyl Alcohol USP, Lactose Monohydrate NF, Magnesium Stearate NF, Microcrystalline Cellulose NF, N-Butyl Alcohol USP, Povidone USP, Propylene Glycol USP, Purified Water USP, Shellac, Titanium Dioxide. Each Tablet, for oral administration, contains 400 mg or 500 mg of Etodolac. In addition, each tablet contains the following inactive ingredients: Hydroxypropyl Methylcellulose USP, Lactose Monohydrate NF, Magnesium Stearate, Microcrystalline Cellulose NF, Polyethylene Glycol, Povidone USP, Sodium Starch Glycolate NF and Titanium Dioxide. Also, each 400 mg tablet contains Iron Oxide Red and Iron Oxide Yellow. Each 500 mg tablet contains D&C Yellow #10 Aluminum Lake, FD&C Blue #1 Aluminum Lake, and FD&C Red #40 Aluminum Lake. Chemical Structure

Etodolac is a member of the pyranocarboxylic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). Etodolac is a racemic mixture of [+] S and [-] R-enantiomers. Etodolac is a white or almost white crystalline powder, practically insoluble in water but freely soluble in acetone and in ethanol (96%). The chemical name is (±) 1,8-diethyl-1,3,4,9-tetrahydropyrano-[3,4-b] indole-1-acetic acid. The molecular weight of the base is 287.36. It has a pKa of 4.65 and an n-octanol:water partition coefficient of 11.4 at pH 7.4. The molecular formula for etodolac is C 17 H 21 NO 3 , and it has the following structural formula: Each etodolac tablet, USP is for oral administration, contains 400 mg or 500 mg of etodolac. In addition, each tablet contains the following inactive ingredients: crospovidone, hydroxypropyl cellulose, hypromellose, magnesium stearate, methylcellulose, polyethylene glycol and titanium dioxide. etodolac-01.jpg

Etodolac is member of the pyranocarboxylic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). Each tablet contains etodolac, USP for oral administration. Etodolac is a racemic mixture of [+]S and [-]R-enantiomers. Etodolac, USP is a white crystalline compound, insoluble in water but soluble in alcohols, chloroform, dimethyl sulfoxide, and aqueous polyethylene glycol. The chemical name is (±) 1,8-diethyl-1,3,4,9-tetrahydropyrano-[3,4-b]indole-1-acetic acid. The molecular weight of the base is 287.37. It has a pKa of 4.65 and an n-octanol: water partition coefficient of 11.4 at pH 7.4. The molecular formula for etodolac is C 17 H 21 NO 3 , and it has the following structural formula: Each Tablet, for oral administration, contains 400 mg or 500 mg of Etodolac, USP. In addition, each tablet contains the following inactive ingredients: hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, sodium starch glycolate and titanium dioxide. Each 400 mg tablet also contains iron oxide red and iron oxide yellow. Each 500 mg tablet also contains D&C Yellow No. 10 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake and FD&C Red No. 40 Aluminum Lake. formula

Etodolac tablets, USP are members of the pyranocarboxylic acid group of nonsteroidal anti-inflammatory drugs (NSAIDs). Each tablet contains etodolac for oral administration. Etodolac is a racemic mixture of [+]S and [-]R-enantiomers. Etodolac USP is a white crystalline compound, insoluble in water but soluble in alcohols, chloroform, dimethyl sulfoxide, and aqueous polyethylene glycol. The chemical name is (±) 1,8-diethyl-1,3,4,9-tetrahydropyrano-[3,4-b]indole-1-acetic acid. The molecular weight of the base is 287.37. It has a pKa of 4.65 and an n-octanol: water partition coefficient of 11.4 at pH 7.4. The molecular formula for etodolac is C 17 H 21 NO 3 , and it has the following structural formula: Each tablet, for oral administration, contains 400 mg or 500 mg of etodolac USP. In addition, each tablet contains the following inactive ingredients: hydroxypropyl methylcellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, sodium starch glycolate and titanium dioxide. Also, each 400 mg tablet contains iron oxide red and iron oxide yellow. Each 500 mg tablet contains D&C Yellow #10 Aluminum Lake, FD&C Blue #1 Aluminum Lake and FD&C Red #40 Aluminum Lake. chemical Structure