saxagliptin and metformin - Generic Medications

Saxagliptin and metformin hydrochloride extended-release tablets contain two oral antihyperglycemic medications used in the management of type 2 diabetes mellitus: saxagliptin and metformin HCl. Saxagliptin Saxagliptin is an orally active inhibitor of the dipeptidyl-peptidase-4 (DPP4) enzyme. Saxagliptin hydrochloride dihydrate is described chemically as (1S,3S,5S)-2-[(2S)-Amino-(3-hydroxytricyclo[3.3.1.1 3,7 ]dec-1-yl)acetyl]-2-azabicyclo[3.1.0]hexane-3-carbonitrile hydrochloride dihydrate or (1S,3S,5S)-2-[(2S)-2-Amino-2-(3-hydroxyadamantan-1-yl)acetyl]-2-azabicyclo[3.1.0]hexane-3-carbonitrile hydrochloride dihydrate. The empirical formula is C 18 H 25 N 3 O 2 •HCl•2 H 2 O and the molecular weight is 387.92. The structural formula is: Saxagliptin hydrochloride dihydrate is a white to off white, non-hygroscopic, crystalline powder. It is sparingly soluble in water at 24°C ± 3°C, slightly soluble in ethyl acetate, and soluble in methanol, ethanol, isopropyl alcohol, acetonitrile, acetone, and polyethylene glycol 400 (PEG 400). Metformin HCl Metformin hydrochloride, USP (1,1-Dimethylbiguanide monohydrochloride) is a white, crystalline powder with a molecular formula of C 4 H 11 N 5 •HCl and a molecular weight of 165.62. Metformin HCl is freely soluble in water, slightly soluble in alcohol, 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 HCl is 6.36. The structural formula is: Saxagliptin and Metformin Hydrochloride Extended-Release Tablets Saxagliptin and metformin hydrochloride extended-release tablets are available for oral administration as tablets containing either 6.149 mg saxagliptin hydrochloride dihydrate equivalent to 5 mg saxagliptin and 500 mg metformin hydrochloride (saxagliptin and metformin hydrochloride extended-release tablets 5 mg/500 mg), or 6.149 mg saxagliptin hydrochloride dihydrate equivalent to 5 mg saxagliptin and 1000 mg metformin hydrochloride (saxagliptin and metformin hydrochloride extended-release tablets 5 mg/1000 mg), or 3.075 mg saxagliptin hydrochloride dihydrate equivalent to 2.5 mg saxagliptin and 1000 mg metformin hydrochloride (saxagliptin and metformin hydrochloride extended-release tablets 2.5 mg/1000 mg). Each film-coated tablet of saxagliptin and metformin hydrochloride extended-release contains the following inactive ingredients: carbomer homopolymer type A, colloidal silicon dioxide, hypromellose, magnesium stearate, polyethylene glycol, polyvinyl alcohol, povidone, red iron oxide, stearic acid, talc and titanium dioxide. The 2.5 mg/1000 mg tablets also contain yellow iron oxide. In addition, the black imprinting ink contains ammonium hydroxide, black iron oxide, propylene glycol and shellac glaze. The biologically inert components of the tablet may occasionally remain intact during gastrointestinal transit and will be eliminated in the feces as a soft, hydrated mass. Saxagliptin Hydrochloride Dihydrate Structural Formula Metformin Hydrochloride Structural Formula