unichem pharmaceuticals (usa), inc. - Medication Listings

Metformin hydrochloride extended-release tablets, USP contain the antihyperglycemic agent metformin, which is a biguanide, in the form of monohydrochloride. The chemical name of metformin hydrochloride is N,N -dimethylimidodicarbonimidic diamide hydrochloride. The structural formula is as shown below: Metformin hydrochloride, USP is a white crystals or white crystalline powder with a molecular formula of C 4 H 11 N 5 • HCl and a molecular weight of 165.62. It is freely soluble in water, slightly soluble in alcohol, practically insoluble in acetone, and in methylene chloride. The pKa of metformin hydrochloride is 2.8 and 11.5. The pH of a 5% aqueous solution of metformin hydrochloride is between 6 and 7. Metformin hydrochloride extended-release tablets, USP contain 500 mg or 750 mg of metformin hydrochloride, which is equivalent to 389.93 mg, 584.90 mg metformin base, respectively. Metformin hydrochloride extended-release tablets, USP 500 mg and 750 mg contain the inactive ingredients carboxymethylcellulose sodium, hypromellose and magnesium stearate. Meets USP Dissolution Test 22. Image

Metformin Hydrochloride Extended-release Tablets, USP contain the antihyperglycemic agent metformin, which is a biguanide, in the form of monohydrochloride. The chemical name of metformin hydrochloride is N,N- dimethylimidodicarbonimidic diamide hydrochloride . The structural formula is as shown below: Metformin hydrochloride, USP is a white to off-white crystalline compound with a molecular formula of C 4 H 11 N 5. HCl and a molecular weight of 165.63. It is freely soluble in water and is practically insoluble in acetone, ether, and chloroform. The pKa of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.86. Metformin Hydrochloride Extended-release Tablets USP, contains 500 mg or 750 mg of metformin hydrochloride, which is equivalent to 389.93 mg, 584.90 mg metformin base, respectively. Metformin Hydrochloride Extended-release Tablets, USP 500 mg and 750 mg contain the inactive ingredients hypromellose, microcrystalline cellulose, povidone, sodium carboxymethyl cellulose, and magnesium stearate. System Components and Performance- Metformin Hydrochloride Extended-release Tablets comprises a dual hydrophilic polymer matrix system. Metformin hydrochloride is combined with a drug release controlling polymers to form a monophasic matrix system. After administration, fluid from the gastrointestinal (GI) tract enters the tablet, causing the polymers to hydrate and swell. Drug is released slowly from the dosage form by a process of diffusion through the gel matrix that is essentially independent of pH. The hydrated polymer system is not rigid and is expected to be broken up by normal peristalsis in the GI tract. The biologically inert components of the tablet may occasionally remain intact during GI transit and will be eliminated in the feces as a soft, hydrated mass. Dissolution Method: Test 24 image

Amlodipine besylate, USP is the besylate salt of amlodipine, a long-acting calcium channel blocker. Amlodipine besylate, USP is chemically described as 3-Ethyl-5-methyl (±)-2-[(2-aminoethoxy)methyl] 4-(2-chlorophenyl)-1,4-dihydro-6-methyl-3,5-pyridinedicarboxylate, monobenzenesulphonate. Its molecular formula is C 20 H 25 ClN 2 O 5 •C 6 H 6 O 3 S and its structural formula is: Amlodipine besylate, USP is a white crystalline powder with a molecular weight of 567.1. It is slightly soluble in water and sparingly soluble in ethanol. Amlohowdipinebesylate Tablets, USP are formulated as yellow tablets equivalent to 2.5 mg or white tablets equivalent to 5 and 10 mg of amlodipine for oral administration. In addition to the active ingredient, amlodipine besylate, USP, each tablet contains the following inactive ingredients: colloidal silicon dioxide,magnesium stearate,microcrystalline cellulose and sodium starch glycolate. The 2.5 mg strength additionally contains ferric oxide yellow as coloring agent. structure

Losartan potassium USP is an angiotensin II receptor blocker acting on the AT 1 receptor subtype. Losartan potassium, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[ p -( o -1 H tetrazol-5ylphenyl)benzyl] imidazole-5-methanol monopotassium salt. Its empirical formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium USP is a white to off-white free-flowing crystalline powder with a molecular weight of 461.01. It is freely soluble in water, soluble in alcohols, and slightly soluble in common organic solvents, such as acetonitrile and methyl ethyl ketone. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. Losartan potassium is available as tablets for oral administration containing either 25 mg, 50 mg or 100 mg of losartan potassium USP and the following inactive ingredients: microcrystalline cellulose, lactose monohydrate, pregelatinized starch, sodium starch glycolate, corn starch, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, D&C yellow no. 10 aluminium lake and FD&C blue no. 2 aluminium lake. Losartan potassium tablets, USP 25 mg, 50 mg and 100 mg contain potassium in the following amounts: 2.12 mg (0.054 mEq), 4.24 mg (0.108 mEq) and 8.48 mg (0.216 mEq), respectively. Chemical Structure

Montelukast sodium USP, the active ingredient in montelukast sodium tablets USP and montelukast sodium chewable tablets USP, is a selective and orally active leukotriene receptor antagonist that inhibits the cysteinyl leukotriene CysLT 1 receptor. Montelukast sodium is described chemically as [R-(E)]-1-[[[1-[3-[2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl] cyclopropaneacetic acid, monosodium salt. The molecular formula is C 35 H 35 ClNNaO 3 S, and its molecular weight is 608.18. The structural formula is: Montelukast sodium is a hygroscopic, optically active, white to off-white powder. Montelukast sodium is freely soluble in water and in methylene chloride, freely soluble to very soluble in ethanol (96%). Each 10-mg film coated montelukast sodium tablet contains 10.4 mg of montelukast sodium, which is equivalent to 10 mg of montelukast, and the following inactive ingredients: croscarmellose sodium, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, mannitol, and microcrystalline cellulose. The film coating consists of: carnauba wax, ferric oxide red, ferric oxide yellow, hydroxypropyl cellulose, hydroxypropyl methylcellulose, and titanium dioxide. Each 4-mg and 5-mg montelukast sodium chewable tablet contains 4.2 and 5.2 mg montelukast sodium, respectively, which are equivalent to 4 and 5 mg of montelukast, respectively. Both chewable tablets contain the following inactive ingredients: aspartame, cherry flavor, croscarmellose sodium, ferric oxide yellow, hydroxypropyl cellulose, magnesium stearate, mannitol, and microcrystalline cellulose. Structure

Hydrochlorothiazide, USP is a diuretic and antihypertensive. It is the 3, 4-dihydro derivative of chlorothiazide. It is chemically designated as 6-chloro-3, 4-dihydro-2 H -1, 2, 4- benzothiadiazine-7-sulfonamide 1, 1-dioxide and has the following structural formula: Hydrochlorothiazide, USP is a white, or practically white, crystalline powder which is slightly soluble in water, freely soluble in sodium hydroxide solution, in n-butylamine, and in dimethylformamide; sparingly soluble in methanol; insoluble in ether, in chloroform, and in dilute mineral acids. Each tablet for oral administration contains 12.5 mg, 25 mg or 50 mg hydrochlorothiazide, USP. In addition, each tablet contains the following inactive ingredients: corn starch, FD&C Yellow #6, dibasic calcium phosphate, pregelatinized starch, colloidal silicon dioxide, lactose monohydrate and magnesium stearate. Hydrochlorothiazide

Hydrochlorothiazide, USP is the 3,4-dihydro derivative of chlorothiazide. Its chemical name is 6-Chloro-3,4-dihydro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 ; its molecular weight is 297.74; and its structural formula is: It is a white, or practically white, crystalline powder which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Hydrochlorothiazide is supplied as 12.5 mg capsules for oral use. Inactive ingredients : Black iron oxide, colloidal silicon dioxide, gelatin, magnesium stearate, microcrystalline cellulose, pregelatinized starch, sodium lauryl sulfate and titanium dioxide. FDA approved dissolution test specifications differ from USP. Structure of Hydrochlorothiazide

Carvedilol is a nonselective β-adrenergic blocking agent with α 1 -blocking activity. It is (±)-1-(carbazol-4-yloxy)-3-[[2-(o-methoxyphenoxy)ethyl]amino]-2-propanol. Carvedilol Tablet is a racemic mixture with the following structure: Carvedilol Tablet is a white, oval-shaped, biconvex film-coated tablet containing 3.125 mg, 6.25 mg, 12.5 mg, or 25 mg of Carvedilol Tablet. Inactive ingredients consist of colloidal silicon dioxide, crospovidone, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sodium citrate dihydrate, sucrose, and titanium dioxide. Carvedilol is a white to off-white powder with a molecular weight of 406.5 and molecular formula of C 24 H 26 N 2 O 4 . It is freely soluble in dimethylsulfoxide; soluble in methylene chloride and methanol; sparingly soluble in 95% ethanol and isopropanol; slightly soluble in ethyl ether; and practically insoluble in water, gastric fluid (simulated, TS, pH 1.1), and intestinal fluid (simulated, TS without pancreatin, pH 7.5). structure

Celecoxib capsule is a non-steroidal anti-inflammatory drug, available as capsules containing 50 mg, 100 mg, 200 mg and 400 mg celecoxib for oral administration. The chemical name is 4-[5-(4-methylphenyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl] benzene sulfonamide and is a diaryl-substituted pyrazole. The molecular formula is C 17 H 14 F 3 N 3 O 2 S, and the molecular weight is 381.37; the chemical structure is as follows: Celecoxib USP is a white or almost white, crystalline powder with a pKa of 11.1. Celecoxib is hydrophobic (log P is 3.0) and freely soluble in ethanol, soluble in methylene chloride and is practically insoluble in water. The inactive ingredients in Celecoxib capsules include: croscarmellose sodium, gelatin, lactose monohydrate, magnesium stearate, povidone, sodium lauryl sulfate, titanium dioxide and trace amount of black edible ink comprising of ferrosoferric oxide (black iron oxide), potassium hydroxide and shellac. Additionally 50 mg include D & C Yellow 10, FD & C Yellow 6; 100 mg include D & C Yellow 10, FD & C Yellow 6, FD & C Blue 1; 200 mg include D & C Yellow 10, FD & C Blue 1 & D & C Red 28. Image

Cyclobenzaprine hydrochloride, USP is a white to off-white, odorless, crystalline powder with the molecular formula C 20 H 21 N•HCl and a molecular weight of 311.85. It has a melting point between 215°C to 219°C and a pKa of 8.47. It is freely soluble in water, in alcohol, and in methanol, sparingly soluble in isopropanol, slightly soluble in chloroform and in methylene chloride, insoluble in n-Hexane. Cyclobenzaprine HCl, USP is designated chemically as 3-(5H-Dibenzo[a,d] cyclohepten-5 ylidene)-N,N-dimethyl-1-propanamine hydrochloride, and has the following structural formula: Cyclobenzaprine hydrochloride USP, 5 mg is supplied as a 5 mg tablet for oral administration. Cyclobenzaprine hydrochloride USP, 7.5 mg is supplied as a 7.5 mg tablet for oral administration. Cyclobenzaprine hydrochloride USP, 10 mg is supplied as a 10 mg tablet for oral administration. Cyclobenzaprine hydrochloride tablets, USP 5 mg contain the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, hypromellose, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, talc, titanium dioxide and triacetin. Cyclobenzaprine hydrochloride tablets, USP 7.5 mg contain the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, hypromellose, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, talc, titanium dioxide, triacetin and yellow iron oxide. Cyclobenzaprine hydrochloride tablets, USP 10 mg contain the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, FD&C Blue No. 2 Aluminium Lake, hypromellose, hydroxypropyl cellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, talc, titanium dioxide, triacetin and yellow iron oxide. FDA approved organic impurities test acceptance criterion differs from the USP organic impurities test acceptance criterion in Cyclobenzaprine Hydrochloride Tablets. Image

Meloxicam Tablets USP are a nonsteroidal anti-inflammatory drug (NSAID). Each tablet contains 7.5 mg or 15 mg meloxicam for oral administration. Meloxicam is chemically designated as 4-hydroxy-2-methyl- N -(5-methyl-2-thiazolyl)-2 H -1,2-benzothiazine-3-carboxamide-1,1-dioxide. The molecular weight is 351.4. Its empirical formula is C 14 H 13 N 3 O 4 S 2 and it has the following structural formula: Chemical Structure Meloxicam is a pastel yellow solid, practically insoluble in water, with higher solubility observed in strong acids and bases. It is very slightly soluble in methanol. Meloxicam has an apparent partition coefficient (log P)app = 0.1 in n -octanol/buffer pH 7.4. Meloxicam has pKa values of 1.1 and 4.2. Meloxicam is available as a tablet for oral administration containing 7.5 mg or 15 mg meloxicam. The inactive ingredients in Meloxicam tablets USP include colloidal silicon dioxide, crospovidone, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone and sodium citrate dihydrate. Chemical Structure

Donepezil hydrochloride is a reversible inhibitor of the enzyme acetylcholinesterase, known chemically as (±)-2, 3-dihydro-5, 6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1 H -inden-1-one hydrochloride. Donepezil hydrochloride is commonly referred to in the pharmacological literature as E2020. It has a molecular formula of C 24 H 29 NO 3 HCl and a molecular weight of 415.96. Donepezil hydrochloride is a white crystalline powder and is freely soluble in chloroform, soluble in water and in glacial acetic acid, slightly soluble in ethanol and in acetonitrile, and practically insoluble in ethyl acetate and in n-hexane. Donepezil hydrochloride is available for oral administration in film-coated tablets containing 5 and 10 mg of donepezil hydrochloride. Inactive ingredients in 5 mg and 10 mg tablets are lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, magnesium stearate. The film coating contains talc, polyethylene glycol, polyvinyl alcohol and titanium dioxide. Additionally, the 10 mg tablet contains yellow iron oxide as a coloring agent. Donepezil hydrochloride orally disintegrating tablets USP are available for oral administration. Each Donepezil hydrochloride orally disintegrating tablet USP contains 5 or 10 mg of donepezil hydrochloride. Inactive ingredients are mannitol, silicified microcrystalline cellulose, low substituted hydroxypropyl cellulose, sucralose, orange flavor,sodium stearyl fumarate. Additionally, the 10 mg tablet contains iron oxide yellow as a coloring agent. Molecular Structure

Tramadol hydrochloride tablets, USP for oral use, are an opioid agonist. The chemical name for tramadol hydrochloride is (±) cis -2-[(dimethylamino)methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride. The structural formula is: The molecular weight of tramadol hydrochloride, USP is 299.98. Tramadol hydrochloride is a white or almost white, crystalline powder. It is freely soluble in water and in methanol, very slightly soluble in acetone and has a pKa of 9.41. The n-octanol/water log partition coefficient (logP) is 1.35 at pH 7. Tramadol hydrochloride tablets, USP contain 50 mg of tramadol hydrochloride, USP and are pale yellow in color. Inactive ingredients in the tablet are colloidal silicon dioxide, croscarmellose sodium, hypromellose, iron oxide yellow, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide. Image

Each alfuzosin hydrochloride extended-release tablet, USP contains 10 mg alfuzosin hydrochloride, USP as the active ingredient. Alfuzosin hydrochloride is a white to almost white powder that melts at approximately 240°C. It is freely soluble in water, sparingly soluble in alcohol, and practically insoluble in dichloromethane. Alfuzosin hydrochloride is (R,S)-N-[3-[(4-amino-6,7-dimethoxy-2-quinazolinyl) methylamino]propyl]tetrahydro-2-furancarboxamide hydrochloride. The molecular formula of alfuzosin hydrochloride is C 19 H 27 N 5 O 4 •HCl. The molecular weight of alfuzosin hydrochloride is 425.9. Its structural formula is: The tablet also contains the following inactive ingredients: hypromellose, lactose monohydrate, povidone, colloidal silicon dioxide and magnesium stearate. Meets USP Dissolution test 4 . Molecular Structure

Allopurinol, USP is a xanthine oxidase inhibitor. It has the following structural formula: Allopurinol, USP is known chemically as 1, 5-dihydro-4 H -pyrazolo [3, 4- d ]pyrimidin-4-one and it has a molecular weight of 136.11 g/mol. Its solubility in water at 37°C is 80.0 mg/dL and is greater in an alkaline solution. It is a xanthine oxidase inhibitor which is administered orally. Each white to off-white scored tablet contains 100 mg or 300 mg of allopurinol, USP and the inactive ingredients croscarmellose sodium, lactose monohydrate, magnesium stearate, pregelatinized starch and povidone. Image

Amiodarone hydrochloride tablets, USP is an antiarrhythmic drug, available for oral administration as white to off white round-shaped flat faced beveled edged tablets debossed with "U" over score on one side and "359" on other side containing 200 mg of amiodarone hydrochloride USP. The inactive ingredients present are colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate, povidone, pregelatinised starch, stearic acid and sodium starch glycolate. Amiodarone hydrochloride is a benzofuran derivative: 2-butyl-3-benzofuranyl 4-[2-(diethylamino)-ethoxy]-3,5-diiodophenyl ketone hydrochloride. The structural formula is as follows: C 25 H 29 I 2 NO 3 HCl Molecular Weight: 681.77 Amiodarone hydrochloride is a white or almost white, fine crystalline powder. It is very slightly soluble in water, freely soluble in methylene chloride, soluble in methanol, sparingly soluble in alcohol. It contains 37.3% iodine by weight. FDA approved dissolution test specifications differ from USP. Image

Amitriptyline hydrochloride, USP, a dibenzocycloheptadiene derivative, is a white, or practically white, odorless, crystalline compound which is freely soluble in water and alcohol. It is designated chemically as 10,11-Dihydro-N,N-dimethyl-5 H -dibenzo[a, d] cycloheptene-Δ 5 , γ-propylamine hydrochloride. It has the following structural formula: C 20 H 23 N.HCl M.W. 313.90 Each tablet for oral administration contains 10, 25, 50, 75, 100, or 150 mg amitriptyline hydrochloride, USP. Inactive ingredients include lactose monohydrate, microcrystalline cellulose, croscarmellose sodium, hydroxypropyl cellulose, magnesium stearate, hypromellose, titanium dioxide and polyethylene glycol. In addition, the following product specific coloring agents are included: 10 mg-D&C Red #27 Phloxine Aluminum Lake, D&C Yellow #10 Aluminum Lake and FD&C Blue #1 Aluminum Lake; 25 mg-Yellow iron oxide; 50 mg-D&C Yellow #10 Aluminum Lake, FD&C Red #40 Aluminum Lake and FD&C Blue #2 Aluminum Lake; 75 mg-Yellow iron oxide; 100 mg-D&C Yellow #10 Aluminum Lake and D&C Red #30 Aluminum Lake; 150 mg-Yellow iron oxide, Black iron oxide, D&C Yellow #10 Aluminum Lake and FD&C Blue #1 Aluminum Lake. Image

Aripiprazole is an atypical antipsychotic drug that is available as aripiprazole tablets, Aripiprazole is 7-[4-[4-(2,3-dichlorophenyl)-1 piperazinyl]butoxy]-3,4-dihydrocarbostyril. The empirical formula is C 23 H 27 Cl 2 N 3 O 2 and its molecular weight is 448.38. The chemical structure is: Aripiprazole tablets, USP are available in 2 mg, 5 mg, 10 mg, 15 mg, 20 mg, and 30 mg strengths. Inactive ingredients include hydroxypropyl cellulose, lactose monohydrate, corn starch, magnesium stearate, and microcrystalline cellulose. Additionally, 10 mg, 15 mg, 20 mg, and 30 mg include colorant ferric oxide (red). Image

Atenolol, USP a synthetic, beta 1 -selective (cardioselective) adrenoreceptor blocking agent, may be chemically described as 4-[2-hydroxy-3-[(1-methylethyl) amino] propoxy]-benzeneacetamide. The molecular and structural formulas are: C 14 H 22 N 2 O 3 Atenolol (free base) has a molecular weight of 266.34. It is a relatively polar hydrophilic compound with a water solubility of 26.5 mg/mL at 37°C and a log partition coefficient (octanol/water) of 0.23. It is freely soluble in 1N HCl (300 mg/mL at 25°C) and less soluble in chloroform (3 mg/mL at 25°C). Atenolol tablets, USP are available as 25 mg, 50 mg and 100 mg tablets for oral administration. Inactive Ingredients: Colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, povidone and sodium starch glycolate. Image

Atenolol and chlorthalidone tablets, USP are for the treatment of hypertension. It combines the antihypertensive activity of two agents: a beta 1 -selective (cardioselective) hydrophilic blocking agent (atenolol,) and a monosulfonamyl diuretic (chlorthalidone). Atenolol, USP is Benzeneacetamide, 4-[2'-hydroxy-3'-[(1-methylethyl) amino] propoxy]-. Atenolol, USP (free base) is a relatively polar hydrophilic compound with a water solubility of 10.0376 mg/mL at 37° C. It is freely soluble in 1N HCl (100.810 mg/mL at 25°C) and slightly soluble in chloroform (1.0438 mg/mL at 25°C). Chlorthalidone, USP is 2-Chloro-5-(1-hydroxy-3-oxo-1-isoindolinyl) benzene sulfonamide: Chlorthalidone, USP is insoluble in water at 20°C. Each atenolol and chlorthalidone tablets, USP 50 mg/25 mg contains: Atenolol, USP…………………………….. 50 mg Chlorthalidone, USP……………………… 25 mg Each atenolol and chlorthalidone tablets, USP 100 mg/25 mg contains: Atenolol, USP……………………………100 mg Chlorthalidone, USP ……………………..25 mg Inactive ingredients: magnesium stearate, microcrystalline cellulose, povidone, sodium starch glycolate (potato), ferric oxide red (for 50 mg/25 mg) and ferric oxide yellow (for 100 mg/25 mg) Image Image

Baclofen USP, is a muscle relaxant and antispastic, available as 5-mg, 10-mg and 20-mg tablets for oral administration. Its chemical name is 4-amino-3-(4-chlorophenyl)- butanoic acid, and its structural formula is Baclofen USP is a white or creamy white powder, with a molecular weight of 213.66. It is slightly soluble in water, insoluble in organic solvents, dissolves in dilute mineral acids and alkali hydroxides. Inactive Ingredients. colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, povidone, and pregelatinized starch. Image

BISOPROLOL FUMARATE USP is a synthetic, beta 1 -selective (cardioselective) adrenoceptor blocking agent. The chemical name for bisoprolol fumarate is (±)-1-[4-[[2-(1-Methylethoxy)ethoxy]methyl]phenoxy]-3-[(1-methylethyl)amino]-2-propanol (E)-2-butenedioate (2:1) (salt). It possesses an asymmetric carbon atom in its structure and is provided as a racemic mixture. The S(-) enantiomer is responsible for most of the beta-blocking activity. Its molecular formula is (C 18 H 31 NO 4 ) 2 •C 4 H 4 O 4 and its structure is: Bisoprolol fumarate has a molecular weight of 766.97. It is a white crystalline powder which is approximately equally hydrophilic and lipophilic, and is readily soluble in water, methanol, ethanol, and chloroform. BISOPROLOL FUMARATE TABLETS USP are available as 5 and 10 mg tablets for oral administration. Inactive ingredients include Colloidal Silicon Dioxide, Corn Starch (Pregelatinized), Crospovidone, Dibasic Calcium Phosphate, Hypromellose, Magnesium Stearate, Microcrystalline Cellulose, Polyethylene Glycol, Polysorbate 80 and Titanium Dioxide. The 5 mg tablets also contain Red and Yellow Iron Oxide. Structure

Bisoprolol fumarate and hydrochlorothiazide tablets USP are indicated for the treatment of hypertension. It combines two antihypertensive agents in a once–daily dosage: a synthetic beta 1 -selective (cardioselective) adrenoceptor blocking agent (bisoprolol fumarate) and a benzothiadiazine diuretic (hydrochlorothiazide). Bisoprolol fumarate is chemically described as (±)-1-[4-[[2-(1-methylethoxy)ethoxy]methyl] phenoxy]-3-[(1-methylethyl)amino]-2-propanol( E )-2-butenedioate(2:1)(salt). It possesses an asymmetric carbon atom in its structure and is provided as a racemic mixture. The S(-) enantiomer is responsible for most of the beta-blocking activity. Its molecular formula is (C 18 H 31 NO 4 ) 2 •C 4 H 4 O 4 and it has a molecular weight of 766.97. Its structural formula is: Bisoprolol fumarate is a white crystalline powder, approximately equally hydrophilic and lipophilic, and readily soluble in water, methanol, ethanol, and chloroform. Hydrochlorothiazide (HCTZ) is 6-Chloro-3,4-dihydro- 2H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. It is a white, or practically white, practically odorless crystalline powder. It is slightly soluble in water, sparingly soluble in dilute sodium hydroxide solution, freely soluble in n-butylamine and dimethylformamide, sparingly soluble in methanol, and insoluble in ether, chloroform, and dilute mineral acids. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 and it has a molecular weight of 297.73. Its structural formula is: Each Bisoprolol Fumarate and Hydrochlorothiazide tablet USP 2.5 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP….. 2.5 mg Hydrochlorothiazide USP…. 6.25 mg Each Bisoprolol Fumarate and Hydrochlorothiazide tablet USP 5 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP….. 5 mg Hydrochlorothiazide USP…. 6.25 mg Each Bisoprolol Fumarate and Hydrochlorothiazide tablet USP 10 mg/6.25 mg for oral administration contains: Bisoprolol fumarate USP….. 10 mg Hydrochlorothiazide USP…. 6.25 mg Inactive ingredients include pregelatinized starch, dibasic calcium phosphate anhydrous, hypromellose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, colloidal silicon dioxide, copovidone and titanium dioxide. The 5 mg/6.25 mg tablet also contains red and yellow iron oxide. The 2.5 mg/6.25 mg tablet also contains yellow iron oxide. Bisoprolol Fumarate Hydrochlorothiazide

Buspirone hydrochloride tablets, USP are an antianxiety agent that is not chemically or pharmacologically related to the benzodiazepines, barbiturates, or other sedative/anxiolytic drugs. Buspirone hydrochloride is a white crystalline, water soluble compound with a molecular weight of 421.96. Chemically, buspirone hydrochloride is N-[4-[4-(2-pyrimidinyl)-1-piperazinyl]butyl]-1,1-cyclopentanediacetamide monohydrochloride. The empirical formula C 21 H 31 N 5 O 2 •HCl is represented by the following structural formula: Each tablet, for oral administration, contains 5 mg, 10 mg, 15 mg or 30 mg of buspirone hydrochloride, USP (equivalent to 4.6 mg, 9.1 mg, 13.7 mg, and 27.4 mg of buspirone free base, respectively). The 5 mg and 10 mg tablets are scored so they can be bisected. Thus, the 5 mg tablet can also provide a 2.5 mg dose, and the 10 mg tablet can provide a 5 mg dose. The 15 mg tablets are scored such that they may be bisected or trisected. Thus, a single tablet can provide the following doses: 15 mg (entire tablet), 10 mg (two-thirds of a tablet), 7.5 mg (one-half of a tablet), or 5 mg (one-third of a tablet). The 30 mg tablets are scored such that they may be bisected or trisected. Thus, a single tablet can provide the following doses: 30 mg (entire tablet), 20 mg (two-thirds of a tablet), 15 mg (one-half of a tablet), or 10 mg (one-third of a tablet). Buspirone hydrochloride tablets, USP contain the following inactive ingredients: anhydrous lactose, colloidal silicon dioxide, magnesium stearate, microcrystalline cellulose, and sodium starch glycolate. Image

Carbamazepine, USP, is an anticonvulsant and specific analgesic for trigeminal neuralgia, available for oral administration as tablets of 200 mg. Its chemical name is 5 H -dibenz[ b,f ]azepine-5-carboxamide, and its structural formula is: Carbamazepine USP is a white to off-white powder, practically insoluble in water and soluble in methanol, slightly soluble in acetone and insoluble in isopropanol. Its molecular weight is 236.27. Inactive Ingredients Tablets: croscarmellose sodium, ethylcellulose, lactose monohydrate, magnesium stearate and microcrystalline cellulose. Meets USP Dissolution Test 4. Image

Chlorthalidone, USP an oral antihypertensive/diuretic. It is a monosulfamyl diuretic that differs chemically from thiazide diuretics in that a double-ring system is incorporated in its structure. It is 2-chloro-5(1-hydroxy-3-oxo-1- isoindolinyl) benzenesulfonamide with the following structural formula: Molecular Formula: C 14 H 11 ClN 2 O 4 S Molecular weight: 338.77 Chlorthalidone, USP is practically insoluble in water, in ether, and in chloroform; soluble in methanol; slightly soluble in ethanol. Chlorthalidone tablets, USP are available containing either 25 mg or 50 mg of chlorthalidone, USP and the following inactive ingredients: colloidal silicon dioxide, D&C Yellow No. 10 Aluminum Lake, microcrystalline cellulose, pregelatinized starch (maize), sodium starch glycolate (potato), stearic acid. The 50 mg tablets also contain FD&C Blue No.1 Aluminum Lake. Image

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

Cyproheptadine HCl, is an antihistaminic and antiserotonergic agent. Cyproheptadine hydrochloride, USP is a white to slightly yellowish crystalline solid, with a molecular weight of 350.89, which is soluble in water, freely soluble in methanol, sparingly soluble in ethanol, soluble in chloroform, and practically insoluble in ether. It is the sesquihydrate 4-(5H-dibenzo[a,d]cyclohepten-5-ylidene)-1-methylpiperidine hydrochloride. The molecular formula of the anhydrous salt is C 21 H 21 N•HCl and the structural formula of the anhydrous salt is as follows: C 21 H 21 N• HCl M.W. 350.89 Cyproheptadine hydrochloride, USP is available for oral administration in 4 mg tablets. Each tablet contains: Inactives: Lactose Monohydrate, Microcrystalline Cellulose, Sodium Starch Glycolate and Magnesium Stearate. structure

Each diphenoxylate hydrochloride and atropine sulfate tablet 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-(±)-α-(hydroxymethyl) benzeneacetic acid 8-methyl-8-azabicyclo[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 mannitol, pregelatinized starch, hypromellose, colloidal silicon dioxide, magnesium stearate Chemical Structure Chemical Structure

Divalproex sodium, USP 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), oligomer. Divalproex sodium, USP has the following structure: Divalproex sodium, USP occurs as a white to off-white powder. Divalproex sodium extended-release tablets, USP 250 mg and 500 mg are for oral administration. Divalproex sodium extended-release tablets, USP contain divalproex sodium in a once-a-day extended-release formulation equivalent to 250 and 500 mg of valproic acid. Inactive Ingredients Divalproex sodium extended-release tablets USP, 250 mg and 500 mg: Colloidal silicon dioxide, ethylcellulose, hypromellose, lactose monohydrate, propyl gallate, stearic acid and talc. The film coating contains ferric oxide red (for 250 mg), ferric oxide yellow (for 500 mg), hypromellose, lactose monohydrate, titanium dioxide, and triacetin. Imprinting ink Opacode ® S-1-277001 Black contains iron oxide black, propylene glycol and shellac glaze. Meets USP Dissolution Test 12. Image

Divalproex sodium, USP 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, USP has the following structure: Divalproex sodium, USP occurs as a white powder with a characteristic odor. Divalproex sodium delayed-release tablets, USP 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, USP: Microcrystalline cellulose, opadry II white 33G28707, povidone, pregelatinized starch (contains corn starch), silicon dioxide, simethicone, talc and vanillin. Opadry II white 33G28707 consists of hypromellose, lactose monohydrate, polyethylene glycol, titanium dioxide and triacetin. Imprinting ink contains ethanol, shellac glaze, iron oxide black, isopropyl alcohol, N-butyl alcohol and propylene glycol. In addition, individual tablets contain: 125 mg tablets: Acryl EZE Orange which consists of FD & C Yellow No. 6, methacrylic acid copolymer, silica, sodium bicarbonate, sodium lauryl sulfate, talc, titanium dioxide, triethyl citrate & yellow iron oxide. 250 mg tablets: Acryl EZE Pink which consists of D & C Red No. 30, FD & C Blue No. 2, iron oxide red, methacrylic acid copolymer, silica, sodium bicarbonate, sodium lauryl sulfate, talc, titanium dioxide, triethyl citrate. 500 mg tablets: Acryl EZE Pink which consists of FD & C Red No. 40, methacrylic acid copolymer, silica, sodium bicarbonate, sodium lauryl sulfate, talc, titanium dioxide, triethyl citrate. Image

Doxazosin tablets, USP are 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 molecular formula for doxazosin mesylate is C 23 H 25 N 5 O 5 . CH 4 O 3 S and the molecular weight is 547.58. It has the following structure: Doxazosin mesylate, USP 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. Doxazosin tablets are available as colored tablets for oral use and contains 1 mg (orange), 2 mg (blue), 4 mg (gray) and 8 mg (white to off-white) of doxazosin as the free base. The inactive ingredients for all tablets are: lactose monohydrate, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate, sodium starch glycolate. The 1 mg tablet contains FD & C Yellow No: 6 Aluminium Lake;the 2 mg tablet contains FD & C Blue # 2/ Indigo Carmine Al(11 - 14%); the 4 mg tablet contains FD & C Yellow No: 6 Aluminium Lake and FD & C Blue # 2/ Indigo Carmine Al(11 - 14%). FDA approved dissolution test specifications differ from USP. Chemical Structure

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

Flecainide acetate tablets, USP are an antiarrhythmic drug available in tablets of 50, 100, or 150 mg for oral administration. Flecainide acetate is benzamide, N-(2-piperidinylmethyl)-2,5-bis(2,2,2-trifluoroethoxy)-monoacetate. The structural formula is given below. Flecainide acetate is a white crystalline substance with a pK a of 9.3. It has an aqueous solubility of 48.4 mg/mL at 37°C. Flecainide acetate tablets, USP also contain: croscarmellose sodium, hydrogenated vegetable oil, magnesium stearate, microcrystalline cellulose, and pregelatinized starch. structure

Guanfacine extended-release tablets, USP are a once-daily, extended-release formulation of guanfacine hydrochloride (HCl) in a matrix tablet formulation for oral administration only. The chemical designation is N-amidino-2-(2,6-dichlorophenyl) acetamide monohydrochloride. The molecular formula is C 9 H 9 Cl 2 N 3 O·HCl corresponding to a molecular weight of 282.55. The chemical structure is: Guanfacine HCl, USP is a white or almost off-white crystalline powder, soluble in methanol. Each tablet contains guanfacine HCl equivalent to 1 mg, 2 mg, 3 mg, or 4 mg of guanfacine base. The tablets also contains fumaric acid, glyceryl dibehenate, hypromellose, lactose monohydrate, methacrylic acid-ethyl acrylate copolymer, microcrystalline cellulose, polysorbate 80 and sodium lauryl sulfate. In addition, the 3-mg and 4-mg tablets also contain D & C yellow #10 aluminium lake and FD & C blue #1 aluminium lake. Meets USP Dissolution Test 4. Figure 01

Guanfacine tablets, USP are a centrally acting antihypertensive with α 2 -adrenoceptor agonist properties in tablet form for oral administration. The chemical name of guanfacine hydrochloride is N-amidino-2-(2,6-dichlorophenyl) acetamide monohydrochloride and its molecular weight is 282.55. Its structural formula is: Guanfacine hydrochloride, USP is a white or almost white crystalline powder; sparingly soluble in water, methanol and ethanol. The tablets contain the following inactive ingredients: 1 mg — colloidal silicon dioxide, corn starch, lactose monohydrate and stearic acid. 2 mg — colloidal silicon dioxide, corn starch, FD & C Blue No. 1 aluminum lake, lactose monohydrate and stearic acid. FDA approved dissolution test specifications differ from USP. Image

Irbesartan USP is an angiotensin II receptor (AT 1 subtype) antagonist. Irbesartan USP is a non-peptide compound, chemically described as a 2-butyl-3-[p-(o-1H-tetrazol-5 ylphenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one. Its empirical formula is C 25 H 28 N 6 O, and the structural formula: Irbesartan USP is a white to off-white crystalline powder with a molecular weight of 428.5. It is a nonpolar compound with a partition coefficient (octanol/water) of 10.1 at pH of 7.4. Irbesartan is slightly soluble in alcohol and methylene chloride and practically insoluble in water. Irbesartan tablets, USP are available for oral administration in unscored tablets containing 75 mg, 150 mg, or 300 mg of irbesartan. Inactive ingredients include: mannitol, croscarmellose sodium, poloxamer 188, colloidal silicon dioxide and magnesium stearate. Image

Irbesartan and hydrochlorothiazide tablets, USP are a combination of an angiotensin II receptor antagonist (AT 1 subtype), irbesartan, and a thiazide diuretic, hydrochlorothiazide (HCTZ). Irbesartan, USP is a non-peptide compound, chemically described as a 2-butyl-3-[ p -( o -1 H -tetrazol-5-ylphenyl) benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one. Its empirical formula is C 25 H 28 N 6 O, and its structural formula is: Irbesartan, USP is a white to off-white crystalline powder with a molecular weight of 428.5. It is a nonpolar compound with a partition coefficient (octanol/water) of 10.1 at pH of 7.4. Irbesartan is slightly soluble in alcohol and methylene chloride and practically insoluble in water. Hydrochlorothiazide, USP is 6-chloro-3,4-dihydro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its empirical formula is C 7 H 8 ClN 3 O 4 S 2 and its structural formula is: Hydrochlorothiazide, USP is a white, or practically white, crystalline powder with a molecular weight of 297.7. Hydrochlorothiazide is slightly soluble in water and freely soluble in sodium hydroxide solution. Irbesartan and hydrochlorothiazide tablets, USP are available for oral administration in film-coated tablets containing either 150 mg or 300 mg of irbesartan combined with 12.5 mg of hydrochlorothiazide. All dosage strengths contain the following inactive ingredients: mannitol, croscarmellose sodium, poloxamer 188, colloidal silicon dioxide, magnesium stearate, polyvinyl alcohol, talc, titanium dioxide, polyethylene glycol, lecithin, ferric oxide red and ferric oxide yellow. Structure - Irbesartan Structure - Hydrochlorothiazide

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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 powder, sparingly soluble in water and ethanol (96%), insoluble in ether and chloroform. 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: hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, sodium starch glycolate (potato) and titanium dioxide. Image

The chemical name of lacosamide, USP, the single (R)-enantiomer, is (R)-2-acetamido-N-benzyl-3-methoxypropionamide (IUPAC). Lacosamide, USP is a functionalized amino acid. Its molecular formula is C 13 H 18 N 2 O 3 and its molecular weight is 250.30. The chemical structure is: Lacosamide, USP is a white to light yellow powder. It is freely soluble in methanol, soluble in anhydrous ethanol, sparingly soluble in water, slightly soluble in acetonitrile and practically insoluble in heptane. 11.1 Lacosamide Tablets USP Lacosamide tablets, USP for oral administration contain lacosamide, USP and the following inactive ingredients: Colloidal silicon dioxide, crospovidone, hydroxy propyl cellulose, low substituted hydroxy propyl cellulose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide, and dye pigments as specified below: Lacosamide tablets, USP are supplied as debossed tablets and contain the following coloring agents: 100 mg tablets: FD&C Blue #1/Brilliant blue FCF aluminum lake and iron oxide yellow 200 mg tablets: Black iron oxide, iron oxide red and iron oxide yellow Image

Lamotrigine, an AED of the phenyltriazine class, is chemically unrelated to existing AEDs. It's chemical name is 3,5-diamino-6-(2,3-dichlorophenyl)- as -triazine, its molecular formula is C 9 H 7 N 5 Cl 2 , and its molecular weight is 256.09. Lamotrigine is a white to pale cream-colored powder and has a pKa of 5.7. Lamotrigine is very slightly soluble in water (0.17 mg/mL at 25°C) and slightly soluble in 0.1 M HCl (4.1 mg/mL at 25°C). The structural formula is: Lamotrigine tablets USP are supplied for oral administration as 25 mg, 100 mg, 150 mg or 200 mg tablets. Each tablet contains the labeled amount of lamotrigine and the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone and sodium starch glycolate. In addition, the 200 mg tablets contain FD&C Blue No. 2 Lake. Molecular Structure

Losartan potassium and hydrochlorothiazide tablets, USP 50 mg/12.5 mg, Losartan potassium and hydrochlorothiazide tablets, USP 100 mg/12.5 mg and Losartan potassium and hydrochlorothiazide tablets, USP 100 mg/25 mg combine an angiotensin II receptor blocker acting on the AT 1 receptor subtype and a diuretic, hydrochlorothiazide USP. Losartan potassium USP, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[ p -( o -1 H -tetrazol-5-ylphenyl)benzyl]imidazole-5-methanol monopotassium salt. Its molecular formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium USP is a white to off-white free-flowing crystalline powder with a molecular weight of 461.01. It is freely soluble in water, soluble in alcohols, and slightly soluble in common organic solvents, such as acetonitrile and methyl ethyl ketone. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. Hydrochlorothiazide USP is 6-chloro-3,4-dihydro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its molecular formula is C 7 H 8 ClN 3 O 4 S 2 and its structural formula is: Hydrochlorothiazide USP is a white, or practically white, crystalline powder with a molecular weight of 297.74, which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Losartan potassium and hydrochlorothiazide tablets are available for oral administration in three tablet combinations of losartan and hydrochlorothiazide. Losartan potassium and hydrochlorothiazide tablets, USP 50 mg/12.5 mg contains 50 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100 mg/12.5 mg contains 100 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100 mg/25 mg contains 100 mg of losartan potassium USP and 25 mg of hydrochlorothiazide USP. Inactive ingredients are microcrystalline cellulose, lactose monohydrate, pregelatinized starch, sodium starch glycolate, magnesium stearate, hypromellose, titanium dioxide, polyethylene glycol and D&C yellow No. 10 aluminum lake. Losartan potassium and hydrochlorothiazide tablets, USP 50 mg/12.5 mg contains 4.24 mg (0.108 mEq) of potassium, losartan potassium and hydrochlorothiazide tablets, USP 100 mg/12.5 mg contains 8.48 mg (0.216 mEq) of potassium, and losartan potassium and hydrochlorothiazide tablets, USP 100 mg/25 mg contain 8.48 mg (0.216 mEq) of potassium. Losartan Structure Hydrochlorothiazide Structure

Memantine hydrochloride, USP is an orally active NMDA receptor antagonist. The chemical name for memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine HCl occurs as a fine white to off-white powder and is soluble in water. Memantine hydrochloride is available as tablets. Memantine hydrochloride tablets, USP are available for oral administration as round-shaped, film-coated tablets containing 5 mg of memantine hydrochloride and as capsule-shaped, film-coated tablets containing 10 mg of memantine hydrochloride. The tablets also contain the following inactive ingredients: microcrystalline cellulose, colloidal silicon dioxide, talc, povidone, crospovidone and magnesium stearate. In addition the following inactive ingredients are also present as components of the film coating: hypromellose, titanium dioxide and polyethylene glycol 4000. Chemical Structure

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 powder, sparingly soluble in water and chloroform, soluble in alcohol (only with heating) and propylene glycol, and insoluble in benzene and n-hexane. Methocarbamol Tablets USP, 500 mg is available as a light orange colored, round, film-coated tablets, engraved with 'B134' on one side and scored on the other side, containing 500 mg of methocarbamol, USP for oral administration. The inactive ingredients present are corn starch, low substituted hydroxypropyl cellulose, hydroxyprolyl cellulose, sodium starch glycolate, povidone, sodium lauryl sulfate, colloidal silicon dioxide, stearic acid, magnesium stearate, and purified water. Methocarbamol Tablets USP, 500 mg contains Opadry 13H530000 (Orange) (hypromellose, titanium dioxide, propylene glycol, FD&C yellow #6/Sunset Yellow FCF Aluminum Lake, polysorbate 20) as coating material. Methocarbamol Tablets USP, 750 mg is available as an orange colored, capsule shaped, film coated tablets, engraved with 'B135' on one side and plain on the other side, containing 750 mg of methocarbamol, USP for oral administration. It contains Opadry 13H530001 (Orange) as coating material. The inactive ingredients present are corn starch, low substituted hydroxypropyl cellulose, hydroxyprolyl cellulose, sodium starch glycolate, povidone, sodium lauryl sulfate, colloidal silicon dioxide, stearic acid, magnesium stearate, and purified water. Methocarbamol Tablets USP, 750 mg contain Opadry 13H530001 (Orange) (hypromellose, titanium dioxide, propylene glycol, D&C Yellow #10 Aluminum Lake, FD&C yellow #6/Sunset Yellow FCC Aluminum Lake, polysorbate 20) as coating material. structure.jpg

Methscopolamine Bromide Tablets, USP 2.5 mg and 5 mg contain methscopolamine bromide USP, an anticholinergic, which occurs as white crystals, or as a white odorless crystalline powder. Methscopolamine bromide melts at about 225°C with decomposition. The drug is freely soluble in water, slightly soluble in alcohol, and insoluble in acetone and in chloroform. The chemical name for methscopolamine bromide is 3-Oxa-9-azoniatricyclo [3.3.1.0 2, 4 ]nonane, 7-(3-hydroxy-1-oxo-2-phenylpropoxy)-9, 9-dimethyl-, bromide, [7(s)-(1α, 2β, 4β, 5α, 7β)]- and the molecular weight is 398.30. The structural formula is represented below: Methscopolamine Bromide Tablets, USP 2.5 mg for oral administration contain 2.5 mg of methscopolamine bromide USP. Methscopolamine Bromide Tablets, USP 5 mg for oral administration contain 5 mg of methscopolamine bromide USP. Inactive ingredients: microcrystalline cellulose NF, pregelatinized starch NF, colloidal silicon dioxide NF, magnesium stearate NF. Contains no lactose. chemical-structure

Metolazone tablets, USP, for oral administration contain 2½, 5, or 10 mg of metolazone, USP, a diuretic/saluretic/antihypertensive drug of the quinazoline class. Metolazone has the molecular formula C 16 H 16 ClN 3 O 3 S, the chemical name 7-chloro-1, 2, 3, 4-tetrahydro-2-methyl-3-(2-methylphenyl)-4-oxo-6-quinazolinesulfonamide, and a molecular weight of 365.83. The structural formula is: Metolazone is very slightly soluble in water, but more soluble in plasma, blood, alkali, and organic solvents. Inactive Ingredients: Magnesium stearate, microcrystalline cellulose, colloidal silicon dioxide and dye: 2.5 mg - D&C Red No. 30 lake; 5 mg - FD&C Blue No. 2 lake; 10 mg - D&C Yellow No. 10 lake and FD&C Yellow No. 6 lake. Image

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

Nadolol tablets, USP is a synthetic nonselective beta-adrenergic receptor blocking agent designated chemically as 1-( tert -butyl-amino)-3-[(5,6,7,8-tetrahydro- cis -6,7-dihydroxy-1-naphthyl) oxy]-2-propanol. Structural formula: C 17 H 27 NO 4 MW 309.40 Nadolol is a white crystalline powder. It is freely soluble in ethanol, soluble in hydrochloric acid, slightly soluble in water and in chloroform, and very slightly soluble in sodium hydroxide. Nadolol tablets, USP is available for oral administration as 20 mg, 40 mg, and 80 mg tablets. Inactive ingredients: microcrystalline Cellulose (type 101), corn starch, colorant (FD& C Blue No. 2, indigo carmine aluminum lake), copovidone, citric acid monohydrate, sodium starch glycolate, magnesium stearate and purified water. structure

The chemical name for the active ingredient in nebivolol tablets is (1RS,1'RS)-1,1'-[(2RS,2'SR)-bis(6-fluoro-3,4-dihydro-2H-1-benzopyran-2-yl)]-2,2'-iminodiethanol hydrochloride. Nebivolol is a racemate composed of d-Nebivolol and l-Nebivolol with the stereochemical designations of [SRRR]-nebivolol and [RSSS]-nebivolol, respectively. Nebivolol's molecular formula is (C 22 H 25 F 2 NO 4 •HCl) with the following structural formula: Nebivolol hydrochloride is a white to off white powder that is sparingly soluble in methanol. Nebivolol as tablets for oral administration contains nebivolol hydrochloride equivalent to 2.5 mg, 5 mg, 10 mg, and 20 mg of nebivolol base. In addition, nebivolol tablets contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, pregelatinized starch, polysorbate 80 and sodium lauryl sulfate. Additionally, the 2.5 mg and 5 mg tablets contain FD&C yellow no. 6 aluminium lake and the 10 mg tablets contain FD&C blue #2. Image Image