unichem pharmaceuticals (usa), inc. - Medication Listings

Phenytoin sodium is related to the barbiturates in chemical structure, but has a five-membered ring. The chemical name is 5,5-Diphenylhydantoin sodium salt, having the following structural formula: Each extended phenytoin sodium capsule, USP for oral administration contains 100 mg phenytoin sodium, USP. Also contains anhydrous lactose, confectioner's sugar, talc and magnesium stearate. In addition, the empty hard gelatin capsule shells also contain gelatin, sodium lauryl sulphate, and titanium dioxide. The capsules are imprinted with edible ink containing black iron oxide, potassium hydroxide, propylene glycol and shellac. Product in vivo performance is characterized by a slow and extended rate of absorption with peak blood concentrations expected in 4 to 12 hours as contrasted to Prompt Phenytoin Sodium Capsules , USP with a rapid rate of absorption with peak blood concentration expected in 1½ to 3 hours. FDA approved dissolution test method differs from the USP test method. Image

Pindolol, a synthetic beta-adrenergic receptor blocking agent with intrinsic sympathomimetic activity is 1-(Indol-4-yloxy)-3-(isopropylamino)-2-propanol. Its structural formula is: Pindolol, USP is a white to off-white, odorless, crystalline powder which is practically insoluble in water; slightly soluble in methanol; and very slightly soluble in chloroform. Each tablet for oral administration contains pindolol, USP and the following inactive ingredients: microcrystalline cellulose, pregelatinized starch, croscarmellose sodium, sodium lauryl sulfate, colloidal silicon dioxide, magnesium stearate. image-1

Piroxicam USP is a nonsteroidal anti-inflammatory drug, available as maroon and blue 10 mg capsules and maroon 20 mg capsules for oral administration. The chemical name is 4-hydroxyl-2-methyl- N -2-pyridinyl-2 H -1,2,-benzothiazine-3-carboxamide 1,1-dioxide. The molecular weight is 331.35. Its molecular formula is C 15 H 13 N 3 O 4 S, and it has the following chemical structure. Piroxicam occurs as a white crystalline solid, insoluble in water and anhydrous ethanol. It is slightly soluble in 0.1N sodium hydroxide and soluble in methylene chloride. It exhibits a weakly acidic 4-hydroxy proton (pKa 5.1) and a weakly basic pyridyl nitrogen (pKa 1.8). The inactive ingredients in piroxicam capsules USP include: lactose monohydrate, corn starch, sodium lauryl sulfate, magnesium stearate, gelatin, FD&C Blue 1, D&C Red 33, FD&C Red 40, D&C Red 28, titanium dioxide and trace amount of white edible ink. Image

Pramipexole dihydrochloride tablets contain pramipexole dihydrochloride. Pramipexole is a nonergot dopamine agonist. The chemical name of pramipexole dihydrochloride monohydrate is ( S )-2-amino-4,5,6,7-tetrahydro-6-(propylamino)benzothiazole dihydrochloride monohydrate. Its empirical formula is C 10 H 17 N 3 S·2HCl·H 2 O, and its molecular weight is 302.26. The structural formula is: Pramipexole dihydrochloride USP is a white or almost white, crystalline powder. Melting occurs above 280°C, with decomposition. Pramipexole dihydrochloride is more than 20% soluble in water, about 8% in methanol, about 0.5% in ethanol, and practically insoluble in dichloromethane. Pramipexole dihydrochloride tablets 0.125 mg: Each tablet contains 0.125 mg pramipexole dihydrochloride USP. Pramipexole dihydrochloride tablets 0.25 mg: Each tablet contains 0.25 mg pramipexole dihydrochloride USP. Pramipexole dihydrochloride tablets 0.5 mg: Each tablet contains 0.5 mg pramipexole dihydrochloride USP. Pramipexole dihydrochloride tablets 0.75 mg: Each tablet contains 0.75 mg pramipexole dihydrochloride USP. Pramipexole dihydrochloride tablets 1 mg: Each tablet contains 1 mg pramipexole dihydrochloride USP. Pramipexole dihydrochloride tablets 1.5 mg: Each tablet contains 1.5 mg pramipexole dihydrochloride USP. Inactive ingredients for all strengths of Pramipexole dihydrochloride tablets consist of silicified microcrystalline cellulose, croscarmellose sodium and magnesium stearate. Chemical Structure

Prasugrel tablet, USP contains prasugrel USP, a thienopyridine class inhibitor of platelet activation and aggregation mediated by the P2Y 12 ADP receptor. Prasugrel is formulated as the hydrochloride salt, a racemate, which is chemically designated as 5-[(1RS)-2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate hydrochloride. Prasugrel hydrochloride, USP has the empirical formula C 20 H 20 FNO 3 S•HCl representing a molecular weight of 409.90. The chemical structure of prasugrel hydrochloride, USP is: Prasugrel hydrochloride, USP is a white to light brown crystalline solid. It is freely soluble in methanol, sparingly soluble in ethanol and dichloromethane. Prasugrel tablets, USP are available for oral administration as 5 mg or 10 mg capsule shaped, biconvex, film-coated, non-scored tablets, debossed on each side. Each yellow to yellowish 5 mg tablet is manufactured with 5.49 mg prasugrel hydrochloride USP, equivalent to 5 mg prasugrel and each light brown to brown 10 mg tablet with 10.98 mg prasugrel hydrochloride USP, equivalent to 10 mg of prasugrel. Other ingredients include mannitol, hypromellose, low-substituted hydroxypropyl cellulose, microcrystalline cellulose, sucrose stearate, and glyceryl behenate. The color coatings contain lactose, hypromellose, titanium dioxide, talc (only in Prasugrel 5 mg tablet), triacetin, iron oxide yellow, and iron oxide red (only in Prasugrel 10 mg tablet). FDA approved dissolution test specifications differ from USP. Image

Primaquine phosphate is 8-[(4-amino-1-methylbutyl) amino]-6-methoxyquinoline phosphate, a synthetic compound with potent antimalarial activity. The molecular formula of Primaquine phosphate is C 15 H 21 N 3 O·2H 3 PO 4 and its molecular weight is 455.34. The structural formula of Primaquine phosphate is: Figure 1: Primaquine phosphate structure. Each Primaquine phosphate tablet contains 26.3 mg of primaquine phosphate (equivalent to 15 mg of primaquine base). The dosage is customarily expressed in terms of the base. Inactive Ingredients: Microcrystalline Cellulose, Pregelatinized Starch, Lactose Monohydrate, Magnesium Stearate, Purified Water, Hypromellose, Opadry Purple, Titanium Dioxide, Macrogol/PEG, FD&C Red #40 and FD&C Blue #2. structure

Quetiapine is an atypical antipsychotic belonging to a chemical class, the dibenzothiazepine derivatives. The chemical designation is 2-[2-(4-dibenzo [ b,f ] [1,4] thiazepin-11-yl-1-piperazinyl)ethoxy]-ethanol fumarate (2:1) (salt). It is present in tablets as the fumarate salt. All doses and tablet strengths are expressed as milligrams of base, not as fumarate salt. Its molecular formula is C 42 H 50 N 6 O 4 S 2 •C 4 H 4 O 4 and it has a molecular weight of 883.11 (fumarate salt). The structural formula is: Quetiapine fumarate USP is a white to off-white crystalline powder which is moderately soluble in water. Quetiapine extended-release tablets USP are supplied for oral administration as 50 mg (peach), 150 mg (white), 200 mg (yellow), 300 mg (pale yellow), and 400 mg (white). All tablets are capsule shaped and film coated. Inactive ingredients for quetiapine extended-release tablets USP are lactose monohydrate, microcrystalline cellulose, sodium citrate, hypromellose and magnesium stearate. The film coating for all quetiapine extended-release tablets USP contains hypromellose, polyethylene glycol and titanium dioxide. In addition, yellow iron oxide (50 mg, 200 mg and 300 mg tablets) and red iron oxide (50 mg tablets) are included in the film coating of specific strengths. Each 50 mg tablet contains 57.57 mg of quetiapine fumarate USP equivalent to 50 mg quetiapine. Each 150 mg tablet contains 172.70 mg of quetiapine fumarate USP equivalent to 150 mg quetiapine. Each 200 mg tablet contains 230.26 mg of quetiapine fumarate USP equivalent to 200 mg quetiapine. Each 300 mg tablet contains 345.39 mg of quetiapine fumarate USP equivalent to 300 mg quetiapine. Each 400 mg tablet contains 460.52 mg of quetiapine fumarate USP equivalent to 400 mg quetiapine. Meets USP Dissolution Test 12. Image

Quetiapine fumarate, USP is an atypical antipsychotic belonging to a chemical class, the dibenzothiazepine derivatives. The chemical designation is 2-[2-(4-dibenzo [b,f] [1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]-ethanol fumarate (2:1) (salt). It is present in tablets as the fumarate salt. All doses and tablet strengths are expressed as milligrams of base, not as fumarate salt. Its molecular formula is C 42 H 50 N 6 O 4 S 2 •C 4 H 4 O 4 and it has a molecular weight of 883.11 (fumarate salt). The structural formula is: Quetiapine fumarate, USP is a white to off-white crystalline powder which is moderately soluble in water. Quetiapine tablets, USP are supplied for oral administration as 25 mg (round, peach), 50 mg (round, white), 100 mg (round, yellow), 200 mg (round, white), 300 mg (capsule-shaped, white), and 400 mg (capsule-shaped, yellow) tablets. Inactive ingredients are lactose, microcrystalline cellulose, sodium starch glycolate, corn starch, dibasic calcium phosphate dihydrate, talc, magnesium stearate, hypromellose, polyethylene glycol, and titanium dioxide. The 25 mg tablets contain iron oxide red and iron oxide yellow and the 100 mg and 400 mg tablets contain only iron oxide yellow. Each 25 mg tablet contains 28.78 mg of quetiapine fumarate equivalent to 25 mg quetiapine. Each 50 mg tablet contains 57.56 mg of quetiapine fumarate equivalent to 50 mg quetiapine. Each 100 mg tablet contains 115.13 mg of quetiapine fumarate equivalent to 100 mg quetiapine. Each 200 mg tablet contains 230.26 mg of quetiapine fumarate equivalent to 200 mg quetiapine. Each 300 mg tablet contains 345.39 mg of quetiapine fumarate equivalent to 300 mg quetiapine. Each 400 mg tablet contains 460.53 mg of quetiapine fumarate equivalent to 400 mg quetiapine. Molecular Structure

Ranolazine extended-release tablets are available as a film-coated, non-scored, extended-release tablet for oral administration. Ranolazine is a racemic mixture, chemically described as as 1-piperazineacetamide, N -(2,6-dimethylphenyl)-4-[2-hydroxy-3-(2-methoxyphenoxy)propyl]-, (±)-. It has an empirical formula of C 24 H 33 N 3 O 4 , a molecular weight of 427.54 g/mole, and the following structural formula: Ranolazine is a white to off-white crystalline powder. Ranolazine is soluble in dichloromethane and methanol. Ranolazine extended-release tablets contain 500 mg or 1000 mg of ranolazine and the following inactive ingredients: hypromellose, magnesium stearate, methacrylic acid and ethyl acrylate copolymer, microcrystalline cellulose, polysorbate 80, sodium hydroxide and sodium lauryl sulfate. The film coating contains ferrosoferric oxide (1000 mg only), iron oxide red (1000 mg only), iron oxide yellow (1000 mg only), polyethylene glycol, polyvinyl alcohol, talc, and titanium dioxide. molecular structure

Rizatriptan benzoate tablets, USP contain rizatriptan benzoate, a selective 5-hydroxytryptamine 1B/1D (5-HT 1B/1D ) receptor agonist. Rizatriptan benzoate is described chemically as: N,N -dimethyl-5-(1 H -1,2,4-triazol-1-ylmethyl)-1 H -indole-3-ethanamine monobenzoate and its structural formula is: Its molecular formula is C 15 H 19 N 5 •C 7 H 6 O 2 , representing a molecular weight of the free base of 269.4. Rizatriptan benzoate is a white to off-white, crystalline powder that is soluble in water at about 42 mg per mL (expressed as free base) at 25 o C. Rizatriptan benzoate tablets, USP are available for oral administration in strengths of 5 mg and 10 mg (corresponding to 7.265 mg or 14.53 mg of the benzoate salt, respectively). Each orally disintegrating tablet contains the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, pregelatinized starch, and magnesium stearate. Chemical Structure

Summary not available yet.

Solifenacin succinate is a muscarinic receptor antagonist. Chemically, solifenacin succinate is butanedioic acid, compounded with (1 S )-(3 R )-1-azabicyclo[2.2.2]oct-3-yl 3,4-dihydro-1-phenyl-2(1 H ) iso-quinoline carboxylate (1:1) having an empirical formula of C 23 H 26 N 2 O 2 •C 4 H 6 O 4 , and a molecular weight of 480.55. The structural formula of solifenacin succinate is: Solifenacin succinate is a white to pale yellowish white powder. It is soluble in dimethyl sulphoxide, methanol, water and insoluble in n-hexane. Each solifenacin succinate tablet contains 5 or 10 mg of solifenacin succinate and is formulated for oral administration. In addition to the active ingredient solifenacin succinate, each solifenacin succinate tablet also contains the following inactive ingredients: corn starch, hypromellose 2910, lactose monohydrate, magnesium stearate, polyethylene glycol 8000, pregelatinized starch, talc, and titanium dioxide with yellow ferric oxide (5 mg solifenacin succinate tablet) or red ferric oxide (10 mg solifenacin succinate tablet). Image

Sotalol/Sotalol AF contains sotalol hydrochloride, an antiarrhythmic drug with Class II (beta­ adrenoreceptor blocking) and Class III (cardiac action potential duration prolongation) properties. Sotalol Hydrochloride Tablets, USP are supplied as a light-blue, capsule-shaped tablet for oral administration. Sotalol hydrochloride is a white, crystalline solid with a molecular weight of 308.8. It is hydrophilic, soluble in water, propylene glycol and ethanol, but is only slightly soluble in chloroform. Chemically, sotalol hydrochloride is d,l-N-[4-[1-hydroxy-2-[(1-methylethyl) amino]ethyl]phenyl]methane-sulfonamide monohydrochloride. The molecular formula is C 12 H 20 N 2 O 3 S∙HCl and is represented by the following structural formula: Sotalol Tablets contain the following inactive ingredients: microcrystalline cellulose, lactose monohydrate, pregelatinized starch, stearic acid, magnesium stearate, colloidal silicon dioxide, and FD&C blue #2 (aluminum lake 11% - 14%). Sotalol AF Tablets contain the following inactive ingredients: microcrystalline cellulose, lactose monohydrate, pregelatinized starch, stearic acid, magnesium stearate, and colloidal silicon dioxide. structure

Tadalafil USP is a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Tadalafil has the empirical formula C 22 H 19 N 3 O 4 representing a molecular weight of 389.41. The structural formula is: The chemical designation is pyrazino[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione,6-(1,3-benzodioxol-5-yl)2,3,6,7,12,12a-hexahydro-2-methyl-,(6R,12aR)-. It is a crystalline solid that is freely soluble in dimethyl sulfoxide, slightly soluble in methylene chloride and practically insoluble in water Tadalafil Tablets USP are available as oval / almond shaped film coated tablets for oral administration. Each tablet contains 2.5, 5, 10, or 20 mg of tadalafil and the following inactive ingredients : Lactose monohydrate, Microcrystalline Cellulose, Sodium Lauryl Sulphate, Croscarmellose Sodium, Hydroxypropyl Cellulose, Magnesium Stearate, Hypromellose, Titanium Dioxide, Triacetin, Talc and Yellow iron oxide. In addition, Tadalafil Tablets, 2.5 mg and 10 mg contains Red iron oxide Image

Tizanidine Tablets contains tizanidine hydrochloride as the active ingredient, which is a central alpha 2 -adrenergic agonist. Its chemical name is 5-chloro-4-(2-imidazolin-2-ylamino)-2,1,3- benzothiadiazole monohydrochloride. It has a molecular formula of C 9 H 8 ClN 5 S-HCl and a molecular weight of 290.2. Its structural formula is: Tizanidine hydrochloride is a white to off-white, fine crystalline powder, which is odorless or with a faint characteristic odor. Tizanidine hydrochloride is slightly soluble in water and methanol; solubility in water decreases as the pH increases Tizanidine tablets, are for oral administration and contain 2 or 4 mg tizanidine (equivalent to 2.288 mg and 4.576 mg tizanidine hydrochloride, respectively), and the inactive ingredients anhydrous lactose, colloidal silicon dioxide, microcrystalline cellulose, and stearic acid. molecular structure

Tolterodine tartrate tablets contain tolterodine tartrate USP. The active moiety, tolterodine, is a muscarinic receptor antagonist. The chemical name of tolterodine tartrate is (R)-2-[3-[bis(1-methylethyl)-amino]1-phenylpropyl]-4-methylphenol [R-(R*,R*)]-2,3dihydroxybutanedioate (1:1) (salt). The empirical formula of tolterodine tartrate is C 26 H 37 NO 7 , and its molecular weight is 475.6. The structural formula of tolterodine tartrate is represented below: Tolterodine tartrate is a white, crystalline powder. The pKa value is 9.87 and the solubility in water is 14.7657 mg/mL. It is sparingly soluble in water, slightly soluble in anhydrous ethanol, practically insoluble in heptane. The partition coefficient (Log D) between n-octanol and water is 1.83 at pH 7.3. Tolterodine tartrate tablets for oral administration contain 1 or 2 mg of tolterodine tartrate. The inactive ingredients are microcrystalline cellulose, dibasic calcium phosphate dihydrate, sodium starch glycolate type B (pH 3.0 to 5.0), colloidal silicon dioxide, magnesium stearate, hypromellose, stearic acid, and titanium dioxide. Structure

Tolterodine tartrate extended-release capsules contain tolterodine tartrate. The active moiety, tolterodine, is a muscarinic receptor antagonist. The chemical name of tolterodine tartrate is (R)-N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3 phenylpropanamine L-hydrogen tartrate. The empirical formula of tolterodine tartrate is C26H37NO7,. Its structure is: Tolterodine tartrate is a white, crystalline powder with a molecular weight of 475.6. The pKa value is 9.87 and the solubility in water is 14 mg/mL. It is sparingly soluble in water, slightly soluble in anhydrous ethanol, practically insoluble in heptane. The partition coefficient (Log D) between n-octanol and water is 1.83 at pH 7.3. Tolterodine tartrate extended-release capsules 2 mg capsule for oral administration contains 2 mg of Tolterodine Tartrate USP, and the following inactive ingredients are sugar spheres (which contain sucrose and corn starch), hypromellose, ethylcellulose dispersion type B (which contain ethylcellulose, medium chain triglycerides and oleic acid), talc, gelatin, titanium dioxide, iron oxide yellow, FD & C blue #1 and FD & C red #40. Tolterodine tartrate extended-release capsules 4 mg capsule for oral administration contains 4 mg of Tolterodine Tartrate USP. Inactive ingredients are sugar spheres (which contain sucrose and corn starch), hypromellose, ethylcellulose dispersion type B (which contain ethylcellulose, medium chain triglycerides and oleic acid), talc, gelatin, titanium dioxide, FD & C blue #1 and D & C red #28. Both the 2 mg and 4 mg capsule strengths are imprinted with a pharmaceutical grade printing ink that contains shellac, propylene glycol, black iron oxide, potassium hydroxide. Structure

Topiramate, USP is a sulfamate-substituted monosaccharide. Topiramate tablets, USP are available as 25 mg, 50 mg, 100 mg, and 200 mg round shaped tablets for oral administration. Topiramate, USP is a white crystalline powder with a bitter taste. Topiramate, USP is most soluble in alkaline solutions containing sodium hydroxide or sodium phosphate and having a pH of 9 to 10. It is freely soluble in acetone, chloroform, dimethylsulfoxide, and ethanol. The solubility in water is 9.8 mg/mL. Its saturated solution has a pH of 6.3. Topiramate, USP has the molecular formula C 12 H 21 NO 8 S and a molecular weight of 339.36. Topiramate, USP is designated chemically as 2,3:4,5-Di- O- isopropylidene-β-D-fructopyranose sulfamate and has the following structural formula: Topiramate tablets, USP contain the following inactive ingredients: lactose monohydrate, pregelatinized corn starch, microcrystalline cellulose, sodium starch glycolate Type A (Potato), magnesium stearate, hypromellose, polysorbate 80, polyethylene glycol, and titanium dioxide. In addition the 25 mg, 100 mg and 200 mg tablets also contain yellow iron oxide; the 25 mg and 100 mg tablets also contain red iron oxide. Image

Valsartan, USP is a nonpeptide, orally active, and specific angiotensin II receptor blocker acting on the AT 1 receptor subtype. Valsartan, USP is chemically described as N -(1-oxopentyl)- N -[[2'-(1 H -tetrazol-5-yl) [1,1'-biphenyl]-4-yl]methyl]-L-valine. Its molecular formula is C 24 H 29 N 5 O 3 , its molecular weight is 435.5, and its structural formula is: Valsartan, USP is a white or almost white, hygroscopic powder. It is freely soluble in anhydrous ethanol, sparingly soluble in methylene chloride, practically insoluble in water. Valsartan, USP is available as tablets for oral administration, containing 40 mg, 80 mg, 160 mg or 320 mg of valsartan. The inactive ingredients of the tablets are colloidal silicon dioxide, crospovidone, ferric oxide yellow (in 80 mg, and 160 mg), hypromellose, lactose monhydrate, magnesium stearate, microcrystalline cellulose, polyethelene glycol, povidone, sodium lauryl sulphate, talc (in 40 mg, and 320 mg) and titanium dioxide. Figure 1 - Structure

Zaleplon is a nonbenzodiazepine hypnotic from the pyrazolopyrimidine class. The chemical name of zaleplon is N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide. Its molecular formula is C 17 H 15 N 5 O, and its molecular weight is 305.34. The structural formula is shown below. Zaleplon Zaleplon is a white to off-white powder that is practically insoluble in water and sparingly soluble in alcohol or propylene glycol. Its partition coefficient in octanol/water is constant (log PC = 1.23) over the pH range of 1 to 7. Zaleplon capsules USP contain zaleplon as the active ingredient. Inactive ingredients consist of microcrystalline cellulose, pregelatinized starch, colloidal silicon dioxide, sodium lauryl sulfate, magnesium stearate, lactose, gelatin, titanium dioxide, FD&C blue #1, FD&C red #40 and black iron oxide. The 5 mg capsules also contain FD&C yellow #5. Meets USP Dissolution Test 2. Molecular Structure

Zonisamide Capsules USP, are an antiseizure drug chemically classified as a sulfonamide and unrelated to other antiseizure agents. The active ingredient is zonisamide, 1,2 -benzisoxazole-3-methanesulfonamide. The empirical formula is C 8 H 8 N 2 O 3 S with a molecular weight of 212.23. Zonisamide is a white to off white powder, pKa = 10.6, and is freely soluble in dimethyl formamide, soluble in methanol. The chemical structure is: Zonisamide Capsules USP, are supplied for oral administration as capsules containing 25 mg, 50 mg or 100 mg zonisamide. Each capsule contains the labeled amount of zonisamide plus the following inactive ingredients: hydrogenated vegetable oil, microcrystalline cellulose, colloidal silicon dioxide, sodium lauryl sulfate, gelatin and titanium dioxide. Additionally the 50 mg contains D&C Red No. 28 and FD&C Blue No. 1 and the 100 mg contains FD&C Red No. 40. The black imprinting ink contains shellac, propylene glycol, black iron oxide and potassium hydroxide. Image