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Butalbital, Acetaminophen and Caffeine Tablets, USP are supplied in tablet form for oral administration. Each tablet contains the following active ingredients: butalbital, USP ...................................................................................... 50 mg acetaminophen, USP ............................................................................ 325 mg caffeine, USP ........................................................................................ 40 mg Inactive Ingredients: colloidal silicon dioxide, croscarmellose sodium, crospovidone, magnesium stearate, microcrystalline cellulose, povidone, pregelatinized starch, and stearic acid. Butalbital (5-allyl-5-isobutylbarbituric acid), is a short to intermediate-acting barbiturate. It has the following structural formula: Acetaminophen (4'-hydroxyacetanilide), is a non-opiate, non-salicylate analgesic and antipyretic. It has the following structural formula: Caffeine (1,3,7-trimethylxanthine), is a central nervous system stimulant. It has the following structural formula: butalbital-structure apap structure caffeine structure

Cefadroxil capsules, USP is a semisynthetic cephalosporin antibiotic intended for oral administration. Cefadroxil monohydrate is a white to yellowish-white crystalline powder. It is soluble in water and it is acid-stable. It is chemically designated as 5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-, monohydrate, [6 R -[6α,7β ( R *)]]-. It has the following structural formula: C 16 H 17 N 3 O 5 S•H 2 O M.W. 381.40 Cefadroxil capsules, USP contain the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, D&C Yellow #10 Aluminum Lake, FD&C Blue #1, FD&C Blue #1 Aluminum Lake, FD&C Blue #2 Aluminum Lake, FD&C Red #40, FD&C Red #40 Aluminum Lake, gelatin, iron oxide black, magnesium stearate, propylene glycol, shellac glaze, sodium lauryl sulfate, and titanium dioxide. Chemical Structure

Cefadroxil monohydrate is a semisynthetic cephalosporin antibiotic intended for oral administration. It is a white to yellowish-white crystalline powder. It is soluble in water and it is acid-stable. It is chemically designated as 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7-[[amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-, monohydrate, [6R-[6α,7β(R*)]]-. It has the formula C 16 H 17 N 3 O 5 S•H 2 O and the molecular weight of 381.40. It has the following structural formula: Each capsule contains cefadroxil monohydrate USP equivalent to 500 mg of cefadroxil. In addition, each capsule also contains the following inactive ingredients: crospovidone, D&C Red No. 28, FD&C Blue No. 1, FD&C Red No. 40, ferric oxide black, gelatin, magnesium stearate, microcrystalline cellulose, potassium hydroxide, propylene glycol, shellac and titanium dioxide. Molecular Structure

Cefuroxime axetil tablets, USP contain cefuroxime as cefuroxime axetil. Cefuroxime axetil is a semisynthetic, cephalosporin antibacterial drug for oral administration. The chemical name of cefuroxime axetil (1-(acetyloxy) ethyl ester of cefuroxime) is ( RS )-1 hydroxyethyl (6 R ,7 R )-7-[2-(2-furyl)glyoxyl-amido]-3-(hydroxymethyl)-8-oxo-5-thia-1 azabicyclo[4.2.0]-oct-2-ene-2-carboxylate, 72-( Z )-( O -methyl-oxime), 1-acetate 3-carbamate. Its molecular formula is C 20 H 22 N 4 O 10 S, and it has a molecular weight of 510.48. Cefuroxime axetil is in the amorphous form and has the following structural formula: Cefuroxime axetil tablets, USP are film-coated and contain the equivalent of 250 or 500 mg of cefuroxime as cefuroxime axetil. Cefuroxime axetil tablets, USP contain the inactive ingredients microcrystalline cellulose, croscarmellose sodium, sodium lauryl sulfate, colloidal silicon dioxide, calcium stearate, calcium carbonate, crospovidone, hypromellose, titanium dioxide, propylene glycol, FD &C blue no.1 Aluminium lake. cefuroxime-structure

Ciprofloxacin Tablets, USP are synthetic antimicrobial agents for oral administration. Ciprofloxacin hydrochloride, USP, a fluoroquinolone, is the monohydrochloride monohydrate salt of 1-cyclopropyl- 6-fluoro- 1,4-dihydro- 4-oxo- 7-(1-piperazinyl)- 3-quinolinecarboxylic acid. It is a faintly yellowish to light yellow crystalline substance with a molecular weight of 385.8. Its empirical formula is C 17 H 18 FN 3 O 3 •HCl•H 2 O and its chemical structure is as follows: Ciprofloxacin is 1-cyclopropyl- 6-fluoro- 1,4-dihydro- 4-oxo- 7-(1-piperazinyl)- 3-quinolinecarboxylic acid. Its empirical formula is C17H18FN3O3 and its molecular weight is 331.4. It is a faintly yellowish to light yellow crystalline substance and its chemical structure is as follows: Ciprofloxacin film-coated tablets are available in 250 mg and 500 mg (ciprofloxacin equivalent) strengths. Ciprofloxacin Tablets, USP are white. The inactive ingredients are colloidal silicon dioxide, corn starch, partially pregelatinized maize starch, magnesium stearate, microcrystalline cellulose, sodium starch glycolate (starch from non-GMO potatoes), hypromellose, titanium dioxide and PEG. C17H18FN3O3•HCl•H2O C17H18FN3O3

Ciprofloxacin Tablets, USP are synthetic antimicrobial agents for oral administration. Ciprofloxacin hydrochloride, USP, a fluoroquinolone, is the monohydrochloride monohydrate salt of 1-cyclopropyl- 6-fluoro- 1,4-dihydro- 4-oxo- 7-(1-piperazinyl)- 3-quinolinecarboxylic acid. It is a faintly yellowish to light yellow crystalline substance with a molecular weight of 385.8. Its empirical formula is C 17 H 18 FN 3 O 3 •HCl•H 2 O and its chemical structure is as follows: Ciprofloxacin is 1-cyclopropyl- 6-fluoro- 1,4-dihydro- 4-oxo- 7-(1-piperazinyl)- 3-quinolinecarboxylic acid. Its empirical formula is C17H18FN3O3 and its molecular weight is 331.4. It is a faintly yellowish to light yellow crystalline substance and its chemical structure is as follows: Ciprofloxacin film-coated tablets are available in 250 mg and 500 mg (ciprofloxacin equivalent) strengths. Ciprofloxacin Tablets, USP are white. The inactive ingredients are colloidal silicon dioxide, corn starch, partially pregelatinized maize starch, magnesium stearate, microcrystalline cellulose, sodium starch glycolate (starch from non-GMO potatoes), hypromellose, titanium dioxide and PEG. C17H18FN3O3•HCl•H2O C17H18FN3O3

Ciprofloxacin 0.3% and dexamethasone 0.1% sterile otic suspension, USP, contains the quinolone antimicrobial, ciprofloxacin hydrochloride USP, combined with the corticosteroid, dexamethasone USP, in a sterile, preserved suspension for otic use. Each mL of ciprofloxacin 0.3% and dexamethasone 0.1% otic suspension contains ciprofloxacin hydrochloride, USP (equivalent to 3 mg ciprofloxacin base), 1 mg dexamethasone USP, and 0.1 mg benzalkonium chloride as a preservative. The inactive ingredients are acetic acid, boric acid, edetate disodium, hydroxyethyl cellulose, water for injection, sodium acetate, sodium chloride, and tyloxapol. Sodium hydroxide or hydrochloric acid may be added for adjustment of pH. Ciprofloxacin, a quinolone antimicrobial is available as the monohydrochloride monohydrate salt of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinoline carboxylic acid. The molecular formula is C 17 H 18 FN 3 O 3 •HCl•H 2 O. The molecular weight is 385.82 g/mol and the structural formula is: Figure 1: Structure of Ciprofloxacin Dexamethasone, 9-fluoro-11(beta),17,21-trihydroxy-16(alpha)-methylpregna-1,4-diene-3,20-dione, is a corticosteroid. The molecular formula is C 22 H 29 FO 5 . The molecular weight is 392.46 g/mol and the structural formula is: Figure 2: Structure of Dexamethasone Cipro Structure Dexa Structure

Clindamycin hydrochloride is the hydrated hydrochlo­ride salt of clindamycin. Clindamycin is a semisynthetic antibiotic produced by a 7(S)-chloro-substitution of the 7(R)-hydroxyl group of the parent compound lincomycin. The chemical name for clindamycin hydrochloride is Methyl 7-chloro-6,7,8-trideoxy-6-(1-methyl- trans -4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L- threo -α-D- galacto -octopyranoside monohydrochloride. The structural formula is represented below: Clindamycin hydrochloride capsules, USP contain clindamycin hydro­chloride USP equivalent to 150 mg or 300 mg of clindamycin. Each capsule also contains the following inactive ingredients: lactose monohydrate, corn starch, talc, and magnesium stearate. The empty hard gelatin capsule shell consists of FD&C Blue #1, titanium dioxide, gelatin, and sodium lauryl sulphate. In addition 150 mg also contains yellow iron oxide. The capsules are printed with edible ink containing black iron oxide and shellac. Chemical Structure

Clindamycin hydrochloride, USP is the hydrated hydrochloride salt of clindamycin. Clindamycin is a semisynthetic antibiotic produced by a 7(S)-chloro-substitution of the 7(R)-hydroxyl group of the parent compound lincomycin. Clindamycin Hydrochloride Capsules, USP contain clindamycin hydrochloride, USP equivalent to 75 mg, 150 mg, or 300 mg of clindamycin. Inactive ingredients: colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate and talc. The capsule shells contain FD&C blue no. 1, gelatin, iron oxide yellow (75 mg and 150 mg only) and titanium dioxide. The black imprinting ink contains black iron oxide, potassium hydroxide, propylene glycol and shellac. The structural formula is represented below: The chemical name for clindamycin hydrochloride is Methyl 7-chloro-6,7,8-trideoxy-6- (1-methyl- trans -4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L- threo -α-D- galacto -octopyranoside monohydrochloride. FDA approved dissolution test specifications differ from USP. Structure.jpg

Clonidine hydrochloride, USP is a centrally acting alpha-agonist hypotensive agent available as tablets for oral administration in three dosage strengths: 0.1 mg, 0.2 mg and 0.3 mg. The 0.1 mg tablet is equivalent to 0.087 mg of the free base. The inactive ingredients are colloidal silicon dioxide, corn starch, dibasic calcium phosphate, sodium starch glycolate, glycerin, lactose monohydrate, magnesium stearate, povidone. Clonidine hydrochloride is an imidazoline derivative and exists as a mesomeric compound. The chemical name is 2-(2,6-dichlorophenylamino)-2-imidazoline hydrochloride. The following is the structural formula: Clonidine hydrochloride is an odorless, bitter, white, crystalline substance soluble in water and alcohol. Chemical Structure

Uses for the temporary relief of arthritis pain ONLY in the following areas: hand, wrist, elbow (upper body areas) foot, ankle, knee (lower body areas) this product may take up to 7 days to work for arthritis pain; it is not for immediate relief. If no pain relief in 7 days, stop use.

Diclofenac sodium is a benzene-acetic acid derivative. Diclofenac sodium delayed-released tablets USP are available as delayed-release tablets of 25 mg, 50 mg and 75 mg for oral administration. 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 g/mol. Its molecular formula is C 14 H 10 Cl 12 NNaO 2 , and it has the following structural formula The inactive ingredients in diclofenac sodium delayed-release tablets USP include: croscarmellose sodium, hydroxypropyl methylcellulose, iron oxide red, lactose monohydrate, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene glycol, povidone, talc and titanium dioxide. Chemical structure

Diclofenac sodium is a benzeneacetic acid derivative, designated chemically as 2-[(2,6-dichlorophenyl)amino] benzeneacetic acid, monosodium salt. The structural formula is: C 14 H 10 Cl 2 NNaO 2 M.W. 318.14 Diclofenac sodium is a white to off-white, hygroscopic crystalline powder. It is freely soluble in methanol, soluble in ethanol, sparingly soluble in water and practically insoluble in chloroform and in dilute acid. The n-octanol/water partition coefficient is 13.4 at pH 7.4 and 1545 at pH 5.2. Diclofenac sodium has a dissociation constant (pKa) of 4.0 ± 0.2 at 25°C in water. Each enteric-coated tablet for oral administration contains 25 mg, 50 mg, or 75 mg of diclofenac sodium. In addition, each tablet contains the following inactive ingredients. Inactive ingredients: lactose (monohydrate), microcrystalline cellulose, croscarmellose sodium, povidone, talc, magnesium stearate, methacrylic acid copolymer, polyethylene glycol, opadry brown (Titanium dioxide, hypromellose, polyethylene glycol, iron oxide red, iron oxide yellow). structural formula

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent available as dicyclomine hydrochloride tablets, USP for oral use containing 20 mg and 40 mg dicyclomine hydrochloride USP. It also contain inactive ingredients: lactose monohydrate, hypromellose, pregelatinized maize starch, FD & C Blue 1 Alu.lake, colloidal silicon dioxide and magnesium stearate. 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 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. Structure of Dicyclomine Hydrochloride

Dicyclomine hydrochloride is an antispasmodic and anticholinergic (antimuscarinic) agent available as dicyclomine hydrochloride tablets, USP for oral use containing 20 mg and 40 mg dicyclomine hydrochloride USP. It also contain inactive ingredients: lactose monohydrate, hypromellose, pregelatinized maize starch, FD & C Blue 1 Alu.lake, colloidal silicon dioxide and magnesium stearate. 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 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. Structure of Dicyclomine Hydrochloride

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 capsules are 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 10 mg capsules also contain inactive ingredients: calcium sulfate dihydrate, lactose monohydrate, and magnesium stearate. In addition, the capsule shells contain Gelatin, Sodium Lauryl Sulfate, and Titanium Dioxide. The imprinting ink contains D&C yellow #10 Aluminum Lake, FD&C Blue #1 Aluminum Lake, FD&C Blue #2 Aluminum Lake, FD&C Red #40 Aluminum Lake, iron oxide black, potassium hydroxide and shellac glaze. 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 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. structural formula

Doxepin hydrochloride is one of a class of psychotherapeutic agents known as dibenzoxepin tricyclic compounds. The molecular formula of the compound is C 19 H 21 NO • HCl having a molecular weight of 316. It is a white crystalline solid readily soluble in water, lower alcohols and chloroform. It may be represented by the following structural formula: Chemically, doxepin hydrochloride is a dibenzoxepin derivative and is the first of a family of tricyclic psychotherapeutic agents. Specifically, it is an isomeric mixture of 1-Propanamine, 3-dibenz[ b , e ]oxepin-11 (6 H )ylidene- N , N -dimethyl-hydrochloride. Each 10 mg, 25 mg, 50 mg, 75 mg and 100 mg doxepin capsule, USP for oral administration contains doxepin hydrochloride, USP equivalent to 10 mg, 25 mg, 50 mg, 75 mg and 100 mg of doxepin, respectively and the following inactive ingredients: colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, pregelatinized starch and sodium lauryl sulfate. The hard gelatin capsule shells contain D&C Yellow No. 10, gelatin, sodium lauryl sulfate and titanium dioxide. In addition, the 75 mg and 100 mg hard gelatin capsule shells contain FD&C Green No. 3. The imprinting ink contains black iron oxide, potassium hydroxide, propylene glycol, shellac and strong ammonia solution. Meets USP Dissolution Test 2. formula

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 for oral administration. The chemical designation of 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-naphthacene-carboxamide monohydrochloride, compound with ethyl alcohol (2:1), monohydrate. The structural formula of doxycycline hyclate is: with a molecular formula of (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. 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. Active Ingredient: Doxycycline hyclate USP equivalent to 100 mg of doxycycline. Inactive Ingredient: Microcrystalline cellulose and magnesium stearate. Tablet coating contains hypromellose, titanium dioxide, polyethylene glycol, FD&C yellow #6, polysorbate 80 and FD&C blue #2. Meet USP Dissolution Test 4. structural-formula

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

Emtricitabine and tenofovir disoproxil fumarate tablets are fixed-dose combination tablets containing emtricitabine (FTC) and tenofovir disoproxil fumarate (TDF). FTC is a synthetic nucleoside analog of cytidine. TDF is converted in vivo to tenofovir, an acyclic nucleoside phosphonate (nucleotide) analog of adenosine 5′-monophosphate. Both FTC and tenofovir exhibit inhibitory activity against HIV-1 reverse transcriptase. Emtricitabine: The chemical name of FTC is 5-fluoro-1-(2 R ,5 S )-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl] cytosine. FTC is the (-) enantiomer of a thio analog of cytidine, which differs from other cytidine analogs in that it has a fluorine in the 5-position. It has a molecular formula of C 8 H 10 FN 3 O 3 S and a molecular weight of 247.24. It has the following structural formula: FTC is a white to off-white crystalline powder with a solubility of approximately 112 mg/mL in water at 25°C. The partition coefficient (log p) for emtricitabine is -0.43 and the pKa is 2.65. Tenofovir Disoproxil Fumarate: TDF is a fumaric acid salt of the bis-isopropoxycarbonyloxymethyl ester derivative of tenofovir. The chemical name of tenofovir DF is 9-[( R )-2 [[bis[[(isopropoxycarbonyl)oxy]- methoxy] phosphinyl] methoxy] propyl] adenine fumarate (1:1). It has a molecular formula of C 19 H 30 N 5 O 10 P • C 4 H 4 O 4 and a molecular weight of 635.52. It has the following structural formula: Tenofovir disoproxil fumarate is a white to off-white crystalline powder with a solubility of 13.4 mg/mL in water at 25°C. The partition coefficient (log p) for tenofovir disoproxil is 1.25 and the pKa is 3.75. All dosages are expressed in terms of TDF except where otherwise noted. Emtricitabine and tenofovir disoproxil fumarate tablets are for oral administration. Each film-coated tablet containing 200 mg of emtricitabine USP and 300 mg of tenofovir disoproxil fumarate (which is equivalent to 245 mg of tenofovir disoproxil) as active ingredients. The tablets also include the following inactive ingredients: pregelatinized starch (maize), lactose monohydrate, microcrystalline cellulose, croscarmellose sodium and magnesium stearate. The tablets are coated with Opadry II White which contains hypromellose, lactose monohydrate, titanium dioxide, and triacetin. structure-1 structure-2

Oxycodone Hydrochloride and Acetaminophen is available in tablets for oral administration. Each tablet for oral administration, contains oxycodone hydrochloride and acetaminophen in the following strengths: Oxycodone Hydrochloride, USP 2.5 mg* (*2.5 mg oxycodone hydrochloride is equivalent to 2.2409 mg of oxycodone.) Acetaminophen, USP 325 mg Oxycodone Hydrochloride, USP 5 mg* (*5 mg oxycodone hydrochloride is equivalent to 4.4815 mg of oxycodone.) Acetaminophen, USP 325 mg Oxycodone Hydrochloride, USP 7.5 mg* (*7.5 mg oxycodone hydrochloride is equivalent to 6.7228 mg of oxycodone.) Acetaminophen, USP 325 mg Oxycodone Hydrochloride, USP 10 mg* (*10 mg oxycodone hydrochloride is equivalent to 8.9637 mg of oxycodone.) Acetaminophen, USP 325 mg All strengths of ENDOCET also contain the following inactive ingredients: Colloidal silicon dioxide, croscarmellose sodium, microcrystalline cellulose, povidone, pregelatinized cornstarch, and stearic acid. May also contain crospovidone. In addition, the 2.5 mg/325 mg strength contains FD&C Red No. 40 Aluminum Lake. The 7.5 mg/325 mg strength contains FD&C Yellow No. 6 Aluminum Lake. The 10 mg/325 mg strength contains D&C Yellow No. 10 Aluminum Lake. The 7.5 mg/325 mg strength and the 10 mg/325 mg strength may also contain corn starch. Oxycodone Hydrochloride and Acetaminophen Tablets contain oxycodone, 14- hydroxydihydrocodeinone, a semisynthetic opioid analgesic which occurs as a white to off-white fine crystalline powder. The molecular formula for oxycodone hydrochloride is C 18 H 21 NO 4 ∙ HCl and the molecular weight is 351.82. It is derived from the opium alkaloid, thebaine, and may be represented by the following structural formula: Oxycodone Hydrochloride and Acetaminophen Tablets contain acetaminophen, 4'-hydroxyacetanilide, is a non-opiate, non-salicylate analgesic and antipyretic which occurs as a white, odorless, crystalline powder. The molecular formula for acetaminophen is C 8 H 9 NO 2 and the molecular weight is 151.16. It may be represented by the following structural formula: Oxycodone Structural Formula Acetaminophen Structural Formula

Epinephrine Injection USP, 0.3 mg and Epinephrine Injection USP, 0.15 mg are single-dose auto-injectors and combination products containing drug and device components. Each Epinephrine Injection USP, 0.3 mg (Auto-Injector) delivers a single dose of 0.3 mg epinephrine, USP from epinephrine injection USP, 0.3 mg/0.3 mL in a sterile solution. Each Epinephrine Injection USP, 0.15 mg (Auto-Injector) delivers a single dose of 0.15 mg epinephrine, USP from epinephrine injection USP, 0.15 mg/0.3 mL in a sterile solution. Each 0.3 mL in the Epinephrine Injection USP, 0.3 mg (Auto-Injector) contains 0.3 mg epinephrine USP, 1.8 mg sodium chloride, 0.4 mg sodium metabisulfite, 0.4 mg sodium tartrate (dihydrate), hydrochloric acid to adjust pH, and water for injection. The pH range is 2.2 to 5.0. Each 0.3 mL in the Epinephrine Injection USP, 0.15 mg (Auto-Injector) contains 0.15 mg epinephrine USP, 1.8 mg sodium chloride, 0.4 mg sodium metabisulfite, 0.2 mg sodium tartrate (dihydrate), hydrochloric acid to adjust pH, and water for injection. The pH range is 2.2 to 5.0. Epinephrine, USP is a sympathomimetic catecholamine. Chemically, epinephrine, USP is (-)-3,4-Dihydroxy-α-[(methylamino)methyl]benzyl alcohol with the following structure: Epinephrine solution deteriorates rapidly on exposure to air or light, turning pink from oxidation to adrenochrome and brown from the formation of melanin. Replace Epinephrine Injection USP, 0.3 mg and Epinephrine Injection USP, 0.15 mg if the epinephrine solution appears discolored (pinkish or darker than slightly yellow), cloudy, or if it contains a precipitate. Thoroughly review the patient instructions and operation of Epinephrine Injection USP, 0.3 mg or Epinephrine Injection USP, 0.15 mg with patients and caregivers prior to use [ see Patient Counseling Information ( 17 ) ]. structure

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- O -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-(dimethyl-amino)-β-D- xylo -hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione)) is an 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. Structural Formula

The active ingredient in famotidine tablets, USP is a histamine-2 (H 2 ) receptor antagonist. Famotidine is N' -(aminosulfonyl)-3-[[[2-[(diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanimidamide. The molecular formula of famotidine is C 8 H 15 N 7 O 2 S 3 and its molecular weight is 337.45. Its structural formula is: Each famotidine tablet, USP for oral administration contains either 20 mg or 40 mg of famotidine, USP and the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, ferric oxide red, ferric oxide yellow, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide, and triacetin. Famotidine, USP is a white to pale yellowish-white crystalline powder that is freely soluble in dimethyl formamide and in glacial acetic acid, slightly soluble in methanol, very slightly soluble in water, practically insoluble in acetone, in alcohol, in chloroform, in ether and in ethyl acetate. structure

The active ingredient in famotidine tablets USP is a histamine-2 (H 2 ) receptor antagonist. Famotidine is 3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylthio] -N'–Sulfamoylpropanimidamide. The molecular formula of famotidine is C 8 H 15 N 7 O 2 S 3 and its molecular weight is 337.45. Its structural formula is: Each famotidine tablet for oral administration contains either 20 mg or 40 mg of famotidine USP and the following inactive ingredients: corn starch, hydroxypropyl cellulose, hypromellose, magnesium stearate, microcrystalline cellulose, sodium starch glycolate and titanium dioxide. In addition the 20 mg tablets contain iron oxide yellow. Famotidine USP is a White to yellowish-white, crystalline powder or crystals that is freely soluble in glacial acetic acid and dimethyl formamide, very slightly soluble in methanol, practically insoluble in ethanol and ethyl acetate. FDA approved dissolution test specifications differ from USP. str

Hydrocodone bitartrate and acetaminophen is available in liquid form for oral administration. Hydrocodone bitartrate is an opioid analgesic and occurs as fine, white crystals or as a crystalline powder. It is affected by light. The chemical name is 4, 5α-epoxy-3-methoxy-17-methylmorphinan-6-one tartrate (1:1) hydrate (2:5). It has the following structural formula: Acetaminophen, 4'-hydroxyacetanilide, a slightly bitter, white, odorless, crystalline powder, is a non-opiate, non-salicylate analgesic and antipyretic. It has the following structural formula: Hydrocodone Bitartrate and Acetaminophen Oral Solution contains: Per 5 mL Per 10 mL Per 15 mL Hydrocodone Bitartrate 2.5 mg 5 mg 7.5 mg Acetaminophen 108 mg 217 mg 325 mg Alcohol 6.7% 6.7% 6.7% In addition, the liquid contains the following inactive ingredients: edetate disodium, glycerin, methylparaben, propylene glycol, purified water, saccharin sodium, sorbitol solution, sucrose, with D&C Yellow No. 10 as coloring and natural and artificial flavoring. Chemical Structure Chemical Structure

Hydrocodone bitartrate and acetaminophen are available in liquid form for oral administration. Hydrocodone bitartrate is an opioid analgesic and occurs as fine, white crystals or as a crystalline powder. It is affected by light. The chemical name is 4,5α-epoxy-3-methoxy-17-methylmorphinan-6-one tartrate (1:1) hydrate (2:5). It has the following structural formula: C 18 H 21 NO 3 • C 4 H 6 O 6 • 2½H 2 O M. W. 494.490 Acetaminophen, 4’-hydroxyacetanilide, a slightly bitter, white, odorless, crystalline powder, is a non- opiate, non- salicylate analgesic and antipyretic. It has the following structural formula: C 8 H 9 NO 2 M. W. 151.16 Hydrocodone bitartrate and acetaminophen oral solution contains: Per 5 mL Per 15 mL Hydrocodone Bitartrate 2.5 mg 7.5 mg Acetaminophen 108.0 mg 325.0 mg Ethyl Alcohol, USP (190 Proof) 7% 7% In addition, the liquid contains the following inactive ingredients: citric acid anhydrous, ethyl maltol, glycerin, methylparaben, propylene glycol, propylparaben, purified water, saccharin sodium, sorbitol solution, sucrose, with D&C Red #33 and FD&C Red #40 as coloring and natural and artificial flavoring. hydro-str aceta-str

Hydrocodone Bitartrate and Acetaminophen is available in tablet form for oral administration. Hydrocodone bitartrate is an opioid analgesic and occurs as fine, white crystals or as a crystalline powder. It is affected by light. The chemical name is 4,5α-epoxy-3-methoxy-17-methylmorphinan-6-one tartrate (1:1) hydrate (2:5). It has the following structural formula: Acetaminophen, 4’-hydroxyacetanilide, a slightly bitter, white, odorless, crystalline powder, is a non-opiate, non- salicylate analgesic and antipyretic. It has the following structural formula: Each Hydrocodone Bitartrate and Acetaminophen Tablet USP, 5 mg/325 mg contains: Hydrocodone Bitartrate………………………..5 mg Acetaminophen……………………………….325 mg Each Hydrocodone Bitartrate and Acetaminophen Tablet USP, 7.5 mg/325 mg contains: Hydrocodone Bitartrate………………………..7.5 mg Acetaminophen……………………………….325 mg Each Hydrocodone Bitartrate and Acetaminophen Tablet USP, 10 mg/325 mg contains: Hydrocodone Bitartrate………………………..10 mg Acetaminophen……………………………….325 mg In addition, each tablet contains the following inactive ingredients: croscarmellose sodium, colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, FD&C yellow#6 aluminum lake (5 mg/325 mg only), and FD&C blue#1 aluminum lake (10 mg/325 mg only). Meets USP Dissolution Test 2. hydroc-struct aceto-struct

Ketorolac Tromethamine Tablets, USP are a member of the pyrrolo-pyrrole group of nonsteroidal anti- inflammatory drugs (NSAIDs). The chemical name for ketorolac tromethamine, USP is (±)-5-benzoyl- 2,3-dihydro-1 H -pyrrolizine-1-carboxylic acid, compound with 2-amino-2-(hydroxymethyl)-1,3- propanediol (1:1). The structural formula is: C 15 H 13 NO 3 . C 4 H 11 NO 3 M.W. 376.40 Ketorolac tromethamine, USP is a racemic mixture of [-]S and [+]R ketorolac tromethamine, USP. Ketorolac tromethamine, USP may exist in three crystal forms. All forms are equally soluble in water. Ketorolac tromethamine, USP has a pKa of 3.5 and an n-octanol/water partition coefficient of 0.26. Ketorolac Tromethamine Tablets, USP are white, round, convex, unscored, film-coated tablets. Each tablet, for oral administration, contains 10 mg ketorolac tromethamine, USP, the active ingredient. In addition, each tablet contains the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose, hypromellose 2910 (6 mpa.s), polyethylene glycol 400 and titanium dioxide. Image

Ketorolac tromethamine ophthalmic solution 0.5% is a member of the pyrrolo-pyrrole group of nonsteroidal anti-inflammatory drugs (NSAIDs) for ophthalmic use. Its chemical name is (±)-5-Benzoyl-2, 3-dihydro-1H pyrrolizine-1-carboxylic acid compound with 2-amino-2-(hydroxymethyl)-1,3-propanediol (1:1) and it has the following structure: Ketorolac tromethamine ophthalmic solution is supplied as a sterile isotonic aqueous 0.5% solution, with a pH of 7.4. Ketorolac tromethamine ophthalmic solution is a racemic mixture of R-(+) and S-(-) -ketorolac tromethamine. Ketorolac tromethamine may exist in three crystal forms. All forms are equally soluble in water. The pKa of ketorolac is 3.5. This white to off-white crystalline substance discolors on prolonged exposure to light. The molecular weight of ketorolac tromethamine is 376.41. The osmolality of ketorolac tromethamine ophthalmic solution is 290 mOsmol/kg. Each mL of ketorolac tromethamine ophthalmic solution contains: Active: ketorolac tromethamine 0.5%. Preservative: benzalkonium chloride 0.01%. Inactives: edetate disodium 0.1%; octoxynol 40; water for injection; sodium chloride; hydrochloric acid and/or sodium hydroxide to adjust the pH. Structural Formula

Ketorolac tromethamine, USP is a member of the pyrrolo-pyrrole group of nonsteroidal anti-inflammatory drugs (NSAIDs). The chemical name for ketorolac tromethamine, USP is (±)-5-benzoyl-2,3-dihydro-1H-pyrrolizine-1-carboxylic acid, compound with 2-amino-2-(hydroxymethyl)-1,3-propanediol (1:1), and the chemical structure is: Ketorolac tromethamine, USP is a racemic mixture of [-]S and [+]R ketorolac tromethamine. Ketorolac tromethamine, USP is white to off white, crystalline powder. Freely soluble in water and methanol, slightly soluble in alcohol, dehydrated alcohol and tetrahydrofuran, practically insoluble in acetone, dichloromethane, toluene, ethyl acetate, dioxane, hexane, butyl alcohol and acetonitrile. Ketorolac tromethamine, USP has a pKa of 3.5 and an n‑octanol/water partition coefficient of 0.26. The molecular weight of ketorolac tromethamine is 376.40 g/mol. Its molecular formula is C 15 H 13 NO 3 •C 4 H 11 NO 3. Ketorolac tromethamine tablets, USP are available as round, white, unscored, film-coated tablets. Each film-coated tablet, for oral administration, contains 10 mg ketorolac tromethamine, USP, the active ingredient, with added colloidal silicon dioxide, croscarmellose sodium, lactose monohydrate, magnesium stearate, and microcrystalline cellulose. The white film-coating contains hypromellose, polydextrose, polyethylene glycol, sodium lauryl sulfate, titanium dioxide, and triacetin. FDA approved dissolution test specifications differ from USP. ketorolac tromethamine structural formula

Labetalol Hydrochloride Tablets, USP are adrenergic receptor blocking agents that have both selective alpha 1 -adrenergic and non-selective beta-adrenergic receptor blocking actions in a single substance. Labetalol hydrochloride (HCl), USP is a racemate, chemically designated as 2-hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl) amino] ethyl] benzamide monohydrochloride and it has the following structural formula: Labetalol HCl, USP has two asymmetric centers and therefore exists as a molecular complex of two diastereoisomeric pairs. Dilevalol, the R,R' stereoisomer, makes up 25% of racemic labetalol. Labetalol HCl, USP is a white to off-white crystalline powder, soluble in water. Each tablet, for oral administration, contains 100 mg, 200 mg, or 300 mg of labetalol hydrochloride, USP. In addition, each tablet contains the following inactive ingredients: corn starch, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, polysorbate 80, sodium starch glycolate and titanium dioxide. Chem Structure

Labetalol hydrochloride tablets, USP are an adrenergic receptor blocking agent that has both selective alpha 1 -adrenergic and nonselective beta-adrenergic receptor blocking actions in a single substance. Labetalol hydrochloride, USP is a racemate, chemically designated as 2-hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl] benzamide monohydrochloride, and it has the following structure: Labetalol hydrochloride, USP has the molecular formula C 19 H 24 N 2 O 3 • HCl and a molecular weight of 364.87. It has two asymmetric centers and therefore exists as a molecular complex of two diastereoisomeric pairs. Dilevalol, the R,R' stereoisomer, makes up 25% of racemic labetalol. Labetalol hydrochloride, USP is a white or off-white crystalline powder, soluble in water. Labetalol hydrochloride tablets, USP, for oral administration, contain 100 mg, 200 mg or 300 mg labetalol hydrochloride, USP. In addition, each tablet contains the following inactive ingredients: lactose monohydrate, maize starch, hypromellose (Methocel E5), sodium starch glycolate, magnesium stearate, titanium dioxide, polyethylene glycol, polysorbate 80, hypromellose (3 mPas) and hypromellose (6 mPas) Image

Levofloxacin USP tablets, for oral use Initial U.S. Approval: 1987 Levofloxacin USP tablets Initial U.S. Approval: 1995 Levofloxacin USP are synthetic antibacterial agents for oral administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemical name is (--(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate. Figure 1: The Chemical Structure of Levofloxacin The empirical formula is C 18 H 20 FN 3 O 4 •½ H 2 O and the molecular weight is 370.38. Levofloxacin USP is a light yellowish-white to yellow-white crystal or crystalline powder. The molecule exists as a zwitterion at the pH conditions in the small intestine. The data demonstrate that from pH 0.6 to 5.8, the solubility of levofloxacin, USP is essentially constant (approximately 100 mg/mL). Levofloxacin USP is considered soluble to freely soluble in this pH range, as defined by USP nomenclature. Above pH 5.8, the solubility increases rapidly to its maximum at pH 6.7 (272 mg/mL) and is considered freely soluble in this range. Above pH 6.7, the solubility decreases and reaches a minimum value (about 50 mg/mL) at a pH of approximately 6.9. Levofloxacin USP has the potential to form stable coordination compounds with many metal ions. This in vitro chelation potential has the following formation order: Al +3 >Cu +2 >Zn +2 >Mg +2 >Ca +2 . Levofloxacin USP is available as film-coated tablets and contain the following inactive ingredients: 250 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red iron oxide. 500 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80 and synthetic red and yellow iron oxides. 750 mg (as expressed in the anhydrous form): hypromellose, crospovidone, microcrystalline cellulose, magnesium stearate, polyethylene glycol, titanium dioxide, polysorbate 80. USP dissolution test 4.

Levofloxacin tablets are synthetic antibacterial agents for oral administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemical name is (-)-(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate. Figure 1 The Chemical Structure of Levofloxacin Its molecular formula is C 18 H 20 FN 3 O 4 • ½ H 2 O and the molecular weight is 370.38. Levofloxacin, USP is a light yellowish–white to yellow–white crystals or crystalline powder. The molecule exists as a zwitterion at the pH conditions in the small intestine. The data demonstrate that from pH 0.6 to 5.8, the solubility of levofloxacin is essentially constant (approximately 100 mg/mL). Levofloxacin is considered soluble to freely soluble in this pH range, as defined by USP nomenclature. Above pH 5.8, the solubility increases rapidly to its maximum at pH 6.7 (272 mg/mL) and is considered freely soluble in this range. Above pH 6.7, the solubility decreases and reaches a minimum value (about 50 mg/mL) at a pH of approximately 6.9. Levofloxacin has the potential to form stable coordination compounds with many metal ions. This in vitro chelation potential has the following formation order: Al +3 > Cu +2 > Zn +2 > Mg +2 > Ca +2 . Each levofloxacin tablet, USP intended for oral administration contains levofloxacin hemihydrate equivalent to 250 mg or 500 mg or 750 mg of levofloxacin. In addition, each tablet contains the following inactive ingredients: crospovidone, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol 6000, talc and titanium dioxide. The product meets USP Dissolution Test 2. Structure product formula for Levofloxacin

Levofloxacin tablets are synthetic antibacterial agents for oral administration. Chemically, levofloxacin, a chiral fluorinated carboxyquinolone, is the pure (-)-(S)-enantiomer of the racemic drug substance ofloxacin. The chemical name is (-)-(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid hemihydrate. Figure 1 The Chemical Structure of Levofloxacin Its molecular formula is C 18 H 20 FN 3 O 4 • ½ H 2 O and the molecular weight is 370.38. Levofloxacin, USP is a light yellowish–white to yellow–white crystals or crystalline powder. The molecule exists as a zwitterion at the pH conditions in the small intestine. The data demonstrate that from pH 0.6 to 5.8, the solubility of levofloxacin is essentially constant (approximately 100 mg/mL). Levofloxacin is considered soluble to freely soluble in this pH range, as defined by USP nomenclature. Above pH 5.8, the solubility increases rapidly to its maximum at pH 6.7 (272 mg/mL) and is considered freely soluble in this range. Above pH 6.7, the solubility decreases and reaches a minimum value (about 50 mg/mL) at a pH of approximately 6.9. Levofloxacin has the potential to form stable coordination compounds with many metal ions. This in vitro chelation potential has the following formation order: Al +3 > Cu +2 > Zn +2 > Mg +2 > Ca +2 . Each levofloxacin tablet, USP intended for oral administration contains levofloxacin hemihydrate equivalent to 250 mg or 500 mg or 750 mg of levofloxacin. In addition, each tablet contains the following inactive ingredients: crospovidone, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol 6000, talc and titanium dioxide. The product meets USP Dissolution Test 2. Structure product formula for Levofloxacin

Loperamide hydrochloride, 4-(p-chlorophenyl)-4-hydroxy-N,N-dimethyl- a,a- diphenyl-1-piperidinebutyramide monohydrochloride, is a synthetic antidiarrheal for oral use. Loperamide hydrochloride capsules, USP are available in 2 mg capsules for oral administration. The inactive ingredients are: corn starch, lactose monohydrate, magnesium stearate and talc. The capsule shell contains gelatin, iron oxide red, iron oxide yellow and sodium lauryl sulfate. The capsules are imprinted with black ink containing black iron oxide, potassium hydroxide, propylene glycol and shellac. FDA approved dissolution test specifications differ from USP. str

Meclizine hydrochloride, USP a histamine (H1) receptor antagonist, is a white to slight yellowish crystalline powder. It has the following structural formula: Chemically, meclizine hydrochloride is 1-( p -Chloro-α-phenylbenzyl)-4-( m -methylbenzyl) piperazine dihydrochloride monohydrate. Tablets: Inactive ingredients for the tablets are: anhydrous lactose, colloidal silicon dioxide, crospovidone, magnesium stearate and microcrystalline cellulose. Each meclizine hydrochloride 12.5 mg tablet contains 12.5 mg of meclizine dihydrochloride equivalent to 10.53 mg of meclizine free base. Each meclizine hydrochloride 25 mg tablet contains 25 mg of meclizine dihydrochloride equivalent to 21.07 mg of meclizine free base. Each meclizine hydrochloride 50 mg tablet contains 50 mg of meclizine dihydrochloride equivalent to 42.14 mg of meclizine free base. Chemical Structure

Meclizine hydrochloride, a histamine (H1) receptor antagonist, is a white to slightly yellowish, crystalline powder. It has the following structural formula: Chemically, meclizine hydrochloride, USP is 1-(p-chloro-α-phenylbenzyl)-4-(m-methylbenzyl) piperazine dihydrochloride monohydrate. Inactive ingredients for the tablets are: hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, silicon dioxide and sodium starch glycolate. In addition, the 12.5 mg tablet contains FD&C Blue # 1 Aluminum Lake; and the 25 mg tablet contains D&C Yellow # 10 Aluminum Lake and FD&C Yellow # 6 Aluminum Lake. Each meclizine hydrochloride 12.5 mg tablet contains 12.5 mg of meclizine dihydrochloride equivalent to 10.53 mg of meclizine free base. Each meclizine hydrochloride 25 mg tablet contains 25 mg of meclizine dihydrochloride equivalent to 21.07 mg of meclizine free base. Image

Methocarbamol tablet, USP, a carbamate derivative of guaifenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties. The chemical name of methocarbamol is 1,2-Propanediol,3-(2-methoxyphenoxy)-,1-Carbamate,(±)-.(or) (±)-3-(o-Methoxyphenoxy)-1,2-Propanediol 1-carbamate and has the empirical formula C 11 H 15 NO 5 . Its molecular weight is 241.24g/mol. The structural formula is shown below. Methocarbamol is a white powder, sparingly soluble in water and in chloroform, soluble in alcohol (only with heating), insoluble in benzene and in n-hexane. Methocarbamol tablets, USP are available as 500 mg and 750 mg tablets for oral administration. Methocarbamol tablets, USP 500 mg are light orange colored, round shaped film coated tablets debossed with "G" above the score line on one side and "500" on other side. Methocarbamol tablets, USP 750 mg are light orange colored, caplet shaped film coated tablets debossed with "G" on one side and "750" on other side. Methocarbamol tablets, USP 500 mg and 750 mg contain the following inactive ingredients: colloidal silicon dioxide, maize starch, povidone, sodium lauryl sulfate, sodium starch glycolate, and stearic acid. The tabets are coated with Aquarius Prime which contains FD&C yellow 6, hydroxypropylcellulose, hypromellose, polysorbate 80, propylene glycol, and titanium dioxide str

Methocarbamol tablets, USP, a carbamate derivative of guaifenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties. The chemical name of methocarbamol is 3-(2-methoxyphenoxy)-1,2-propanediol 1-carbamate and has the empirical formula C 11 H 15 NO 5 . Its molecular weight is 241.24. The structural formula is shown below. Methocarbamol is a white bulky powder, sparingly soluble in water and chloroform, soluble in alcohol only with heating and insoluble in benzene and n -hexane. Methocarbamol tablets USP, 500 mg are available as white in color, round, beveled edge, biconvex film-coated tablet containing 500 mg of methocarbamol USP for oral administration. Methocarbamol tablets USP, 750 mg are available as white in color, biconvex capsule shaped film-coated tablet containing 750 mg of methocarbamol USP for oral administration. Methocarbamol tablets USP, 500 mg and 750 mg contain the following inactive ingredients: corn starch, hypromellose, magnesium stearate, polyethylene glycol, povidone, sodium lauryl sulfate, sodium starch glycolate, talc and titanium dioxide. FDA approved dissolution test specifications differ from USP for 500 mg. Chemical Structure

Methocarbamol tablet, USP, a carbamate derivative of guaifenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties. The chemical name of methocarbamol is 1,2-Propanediol,3-(2-methoxyphenoxy)-,1-Carbamate,(±)-.(or) (±)-3-(o-Methoxyphenoxy)-1,2-Propanediol 1-carbamate and has the empirical formula C 11 H 15 NO 5 . Its molecular weight is 241.24g/mol. The structural formula is shown below. Methocarbamol is a white powder, sparingly soluble in water and in chloroform, soluble in alcohol (only with heating), insoluble in benzene and in n-hexane. Methocarbamol tablets, USP are available as 500 mg and 750 mg tablets for oral administration. Methocarbamol tablets, USP 500 mg are light orange colored, round shaped film coated tablets debossed with "G" above the score line on one side and "500" on other side. Methocarbamol tablets, USP 750 mg are light orange colored, caplet shaped film coated tablets debossed with "G" on one side and "750" on other side. Methocarbamol tablets, USP 500 mg and 750 mg contain the following inactive ingredients: colloidal silicon dioxide, maize starch, povidone, sodium lauryl sulfate, sodium starch glycolate, and stearic acid. The tabets are coated with Aquarius Prime which contains FD&C yellow 6, hydroxypropylcellulose, hypromellose, polysorbate 80, propylene glycol, and titanium dioxide str

Metoclopramide hydrochloride, the active ingredient in Metoclopramide Tablets USP, is a dopamine-2 receptor antagonist. Metoclopramide hydrochloride (metoclopramide monohydrochloride monohydrate) is a white crystalline, odorless substance, freely soluble in water. Its chemical name is 4-amino-5-chloro-N-[2-(diethylamino)ethyl]-2-methoxy benzamide monohydrochloride monohydrate. The molecular formula is C 14 H 22 ClN 3 O 2 •HCl•H 2 O. Its molecular weight is 354.3. The structural formula is: Metoclopramide Tablets USP are for oral administration. Metoclopramide Tablets USP are available in 5 mg and 10 mg tablets. Each 5 mg tablet contains 5 mg metoclopramide (equivalent to 5.91 mg of metoclopramide hydrochloride USP). Inactive ingredients consist of corn starch, D&C Yellow 10 Aluminum Lake, FD&C Blue 1 Aluminum Lake, lactose, microcrystalline cellulose, silicon dioxide, and stearic acid. Each 10 mg tablet contains 10 mg metoclopramide (equivalent to 11.82 mg metoclopramide hydrochloride USP). Inactive ingredients consist of magnesium stearate, mannitol, microcrystalline cellulose, and stearic acid. structure

Metronidazole gel contains metronidazole, USP, at a concentration of 7.5 mg per gram (0.75%) in a gel consisting of carbomer 940, edetate disodium, methylparaben, propylene glycol, propylparaben, purified water, and sodium hydroxide. Metronidazole is classified therapeutically as an antiprotozoal and antibacterial agent. Chemically, metronidazole is named 2-methyl-5-nitro-1 H -imidazole-1-ethanol and has the following structure: Chemical Structure

Metronidazole tablets, USP 250 mg or 500 mg is an oral formulation of the synthetic nitroimidazole antimicrobial, 2-methyl-5-nitro-1H-imidazole-1-ethanol, which has the following structural formula: Metronidazole tablets USP contain 250 mg or 500 mg of metronidazole. Inactive ingredients include powdered cellulose, hydroxypropyl cellulose, low substituted hydroxypropyl cellulose, hypromellose, polyethylene glycol, stearic acid, and titanium dioxide. Molecular Structure

Misoprostol oral tablets contain either 100 mcg or 200 mcg of misoprostol, a synthetic prostaglandin E 1 analog. Misoprostol contains approximately equal amounts of the two diastereomers presented below with their enantiomers indicated by (±): C 22 H 38 O 5 M.W. = 382.5 (±) methyl 11α, 16-dihydroxy-16-methyl-9-oxoprost-13E-en-1-oate Misoprostol is a water-soluble, viscous liquid. Inactive ingredients of tablets are hydrogenated castor oil, hypromellose, microcrystalline cellulose, and sodium starch glycolate. Chemical Structure

Morphine Sulfate Tablets are an opioid agonist, available for oral administration: 15 mg tablet: Each tablet contains 15 mg of morphine sulfate, USP (equivalent to 11.25 mg morphine). 30 mg tablet: Each tablet contains 30 mg of morphine sulfate, USP (equivalent to 22.5 mg morphine). Chemically, morphine sulfate is 7,8-didehydro-4,5α-epoxy-17-methylmorphinan-3,6α-diol sulfate (2:1) (salt) pentahydrate. Morphine sulfate, USP is a white to off-white crystalline powder or a fine white to light yellow powder. It is soluble in water and slightly soluble in alcohol, but is practically insoluble in chloroform or ether. The octanol: water partition coefficient of morphine is 1.42 at physiologic pH and the pka is 7.9 for the tertiary nitrogen (the majority is ionized at pH 7.4). Its molecular formula is (C 17 H 19 NO 3 ) 2 • H 2 SO 4 • 5H 2 O, and it has the following chemical structure: Each tablet contains 15 or 30 mg of morphine sulfate, USP and the following inactive ingredients: Microcrystalline Cellulose (Avicel PH 102), Corn Starch, Pregelatinized Starch, Magnesium Stearate, Colloidal Silicon Dioxide, and Stearic Acid 50 Powder. Chemical Structure

Moxifloxacin ophthalmic solution USP, 0.5% is a sterile solution for topical ophthalmic use. Moxifloxacin hydrochloride is an 8-methoxy fluoroquinolone anti-infective, with a diazabicyclononyl ring at the C7 position. The chemical name for moxifloxacin hydrochloride is 1-Cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-[(4aS,7aS)-octahydro-6H-pyrrolol[3,4- b]pyridin-6-yl]-4-oxo-3-quinolinecarboxylic acid, monohydrochloride. The molecular formula for moxifloxacin hydrochloride is C 21 H 24 FN 3 O 4 •HCl and its molecular weight is 437.9 g/mol. The chemical structure is presented below: Molecular Structure Moxifloxacin hydrochloride USP is a slightly yellow to yellow crystalline powder. Each mL of moxifloxacin ophthalmic solution USP contains 5.45 mg moxifloxacin hydrochloride USP equivalent to 5 mg moxifloxacin base. Moxifloxacin ophthalmic solution contains: Active: Moxifloxacin 0.5% (5 mg/mL); Inactives: Boric acid, sodium chloride and water for injection. May also contain hydrochloric acid and/or sodium hydroxide to adjust pH to approximately 6.8. Moxifloxacin ophthalmic solution USP, 0.5% is a yellow colored transparent isotonic solution with an osmolality of approximately 290 mOsm/kg.