doc rx - Medication Listings

Cyclobenzaprine hydrochloride is a skeletal muscle relaxant which relieves muscle spasm of local origin without interfering with muscle function. The active ingredient in cyclobenzaprine hydrochloride extended-release capsules is cyclobenzaprine hydrochloride, USP. Cyclobenzaprine hydrochloride (HCl) is a white, crystalline tricyclic amine salt with the empirical formula C 20 H 21 N·HCl and a molecular weight of 311.9. It has a melting point of 217°C, and a pK a of 8.47 at 25°C. It is freely soluble in water and alcohol, sparingly soluble in isopropanol, and insoluble in hydrocarbon solvents. If aqueous solutions are made alkaline, the free base separates. Cyclobenzaprine HCl 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 extended-release capsules for oral administration are supplied in 15 mg strength. Cyclobenzaprine hydrochloride extended-release capsules contain the following inactive ingredients: diethyl phthalate NF, ethylcellulose NF (Ethocel Standard 10 Premium), gelatin, Opadry ® Clear YS-1-7006, sugar spheres NF (20-25 mesh), D&C yellow #10, FD&C green #3, and FD&C red #40, and titanium dioxide. Structural Formula

Cyclobenzaprine hydrochloride, USP is a white to off-white crystalline powder with the molecular formula C 20 H 21 N•HCl and a molecular weight of 311.9. It has a melting point of 217° C, and a pK a of 8.47 at 25° C. It is freely soluble in water, in alcohol and in methanol, sparingly soluble in isopropanol, slightly soluble in chloroform and in methylene chloride and insoluble in hydrocarbons. If aqueous solutions are made alkaline, the free base separates. Cyclobenzaprine HCl 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 tablets, USP are supplied as a 7.5 mg tablets for oral administration. Cyclobenzaprine hydrochloride 7.5 mg tablets contain the following inactive ingredients: corn starch, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, pregelatinized starch, talc and titanium dioxide. structure

Cyclobenzaprine hydrochloride, USP is a white, crystalline tricyclic amine salt with the empirical formula C 20 H 21 N·HCl and a molecular weight of 311.9. It has a melting point of 217°C, and a pKa of 8.47 at 25° C. It is freely soluble in water and alcohol, sparingly soluble in isopropanol and insoluble in hydrocarbon solvents. If aqueous solutions are made alkaline, the free base separates. Cyclobenzaprine Hydrochloride 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 tablets, USP for oral administration, are available in the following strengths, 5 mg, 7.5 mg and 10 mg. In addition, each tablet contains the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, lactose, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, talc, titanium dioxide. In addition, the 5 mg tablet contain FD&C yellow #6, and both the 5 mg and 10 mg tablets contain iron oxide yellow. Chemical Structure

Azithromycin tablets, USP contain the active ingredient azithromycin, a macrolide antibacterial drug, for oral administration. Azithromycin has the chemical name (2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)­13-[(2,6-dideoxy-3-C-methyl-3-O-methyl- α-L-ribo-hexopyranosyl) oxy]-2-ethyl-3,4,10-trihydroxy-3,5,6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3-(dimethylamino)- β-D-xylo-hexopyranosyl]oxy]-1­ oxa-6-azacyclopentadecan-15-one. Azithromycin is derived from erythromycin; however, it differs chemically from erythromycin in that a methyl-substituted nitrogen atom is incorporated into the lactone ring. Its molecular formula is C 38 H 72 N 2 O 12 , and its molecular weight is 749.00. Azithromycin has the following structural formula: Azithromycin, as the dihydrate, is a white or almost white powder with a molecular formula of C 38 H 72 N 2 O 12 •2H 2 O and a molecular weight of 785.02. Azithromycin is supplied as tablets containing azithromycin dihydrate, USP equivalent to either 250 mg azithromycin and the following inactive ingredients: croscarmellose sodium, dibasic calcium phosphate anhydrous, hypromellose, magnesium stearate, polyethylene glycol, pregelatinized starch, sodium lauryl sulfate, and titanium dioxide. Structure

Dexamethasone Tablets USP are available for oral administration containing either 1 mg, 2 mg or 4 mg of dexamethasone USP. Each tablet contains the following inactive ingredients: lactose monohydrate, magnesium stearate, starch, sugar, D&C Yellow #10 (4 mg), FD&C Green #3 (4 mg), FD&C Yellow #6 (4 mg) and Yellow Iron Oxide (1 mg). Dexamethasone, a synthetic adrenocortical steroid, is a white to practically white, odorless, crystalline powder. It is stable in air. It is practically insoluble in water. The empirical formula is C 22 H 29 FO 5 . The molecular weight is 392.47. It is designated chemically as 9-fluoro-11β,17,21-trihydroxy-16α-methylpregna-1,4-diene,3,20-dione and the structural formula is: dexamth.jpg

Diclofenac potassium tablets, USP are a benzeneacetic acid derivative. Diclofenac potassium tablets are available for oral administration. Diclofenac potassium, USP is a white to off-white or slightly yellowish crystalline powder, slightly hygroscopic and is sparingly soluble in water, Freely soluble in methanol; soluble in alcohol, slightly soluble in acetone. The chemical name is Potassium [ o -(2,6-dichloroanilino)phenyl] acetate. The molecular weight is 334.24. Its molecular formula is C 14 H 10 Cl 2 KNO 2 , and it has the following structural formula: The inactive ingredients in diclofenac potassium tablets include: Lactose Anhydrous, Microcrystalline Cellulose, NF, Colloidal Silicon Dioxide, NF, Croscarmellose Sodium, NF, Magnesium Stearate, NF, Titanium Dioxide, USP, Polydextrose, NF, Hypromellose, USP 2910 (6 mPas), Hypromellose, USP 2910 (3 mPas), Hypromellose, USP 2910 (50 mPas), Triacetin, USP and Polyethylene Glycol, NF 8000. Diclofenac Potassium Structural Formula

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

Ibuprofen and famotidine is supplied as a tablet for oral administration which combines the nonsteroidal anti- inflammatory drug, ibuprofen, and the histamine H 2 -receptor antagonist, famotidine. Ibuprofen is (±)-2-( p- isobutylphenyl)propionic acid. Its chemical formula is C 13 H 18 O 2 and molecular weight is 206.28. Ibuprofen is a white powder that is very slightly soluble in water (<1 mg/mL) and readily soluble in organic solvents such as ethanol and acetone. Its structural formula is: Famotidine is N'- (aminosulfonyl)-3-[[[2-[(diaminomethylene)amino]-4-thiazolyl]methyl]thio]propanimidamide. Its chemical formula is C 8 H 15 N 7 O 2 S 3 and molecular weight is 337.45. Famotidine is a white to pale yellow crystalline compound that is freely soluble in glacial acetic acid, slightly soluble in methanol, very slightly soluble in water, and practically insoluble in ethanol. Its structural formula is: Each ibuprofen and famotidine tablet contains ibuprofen, USP (800 mg) and famotidine, USP (26.6 mg). The inactive ingredients in ibuprofen and famotidine tablet include: Ammonium hydroxide, colloidal silicon dioxide, croscarmellose sodium, FD&C blue #1/brilliant blue FCF aluminum, FD&C blue #2/indigo carmine aluminum lake, ferrosoferric oxide, hypromellose, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, propylene glycol, shellac, talc and titanium Dioxide. ibuprofen-structure famotidine-structure

Metaxalone tablets, USP are available as an 800 mg capsule-shaped, scored white to off-white tablet. Chemically, metaxalone is 5-[(3,5- dimethylphenoxy) methyl]-2-oxazolidinone. The empirical formula is C 12 H 15 NO 3 , which corresponds to a molecular weight of 221.25. The structural formula is: Metaxalone is a white to almost white, odorless crystalline powder freely soluble in chloroform, soluble in methanol and in 96% ethanol, but practically insoluble in ether or water. Each tablet contains 800 mg metaxalone and the following inactive ingredients: alginic acid, ammonium alginate, calcium alginate, corn starch, magnesium stearate and pregelatinized starch (starch 1500 partially pregelatinized maize starch). USP Dissolution Test Pending structural formula

Metaxalone is available as an 800 mg pink, capsule shaped, scored tablet. Chemically, metaxalone is 5-[(3,5-dimethylphenoxy)methyl]-2-oxazolidinone. The empirical formula is C 12 H 15 NO 3 , which corresponds to a molecular weight of 221.25. The structural formula is: Metaxalone is a white to almost white, odorless crystalline powder freely soluble in chloroform, soluble in methanol and in 96% ethanol, but practically insoluble in ether or water. Each tablet contains 800 mg metaxalone and the following inactive ingredients: carboxymethylcellulose sodium, alginic acid, stearic acid, hydrogenated castor oil, magnesium stearate, colloidal silicon dioxide, sodium lauryl sulfate, and FD&C Red #40 Aluminum Lake. structural formula

Methocarbamol Tablets, USP, 500 mg, 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. Each tablet, for oral administration, contains either 500 mg of methocarbamol, USP. The inactive ingredients present are colloidal silicon dioxide, magnesium stearate, povidone, pregelatinized corn starch, purified water, sodium starch glycolate, and stearic acid. The chemical name of methocarbamol is 3-(2-methoxyphenoxy)-1, 2-propanediol 1-carbamate and has the empirical formula C11H15NO5. Its molecular weight is 241.24. The structural formula is shown below.

Methylprednisolone Tablets contain methylprednisolone which is a glucocorticoid. Glucocorticoids are adrenocortical steroids, both naturally occurring and synthetic, which are readily absorbed from the gastrointestinal tract. Methylprednisolone occurs as a white to practically white, odorless, crystalline powder. It is sparingly soluble in alcohol, in dioxane, and in methanol, slightly soluble in acetone, and in chloroform, and very slightly soluble in ether. It is practically insoluble in water. The chemical name for methylprednisolone is pregna-1, 4-diene-3, 20-dione, 11, 17, 21-trihydroxy-6-methyl-, (6α, 11β)-and the molecular weight is 374.48. The structural formula is represented below: Each Methylprednisolone tablet for oral administration contains 4mg of methylprednisolone. Inactive ingredients: Colloidal Silicon Dioxide, Lactose Monohydrate-Cellulose Microcrystalline, Magnesium Stearate, Croscarmellose Sodium. The USP dissolution test is pending. chemical structure