SPL Set ID: 3d6f397b-e909-bee9-e063-6294a90aba17
1 drug(s) with this SPL Set ID
Metformin Hydrochloride Extended-Release Tablets 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 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 pK a of metformin is 12.4. The pH of a 1% aqueous solution of metformin hydrochloride is 6.68. 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 contain the inactive ingredients colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose and povidone. Metformin Hydrochloride Extended-Release Tablets USP, 750 mg contain the inactive ingredients colloidal silicon dioxide, hypromellose, magnesium stearate, microcrystalline cellulose, povidone, polyvinyl alcohol, polyethylene glycol, titanium dioxide, talc, red iron oxide and yellow iron oxide. System Components and Performance – Metformin Hydrochloride Extended-Release Tablets USP is based on a hydrophilic polymer matrix drug delivery system. On oral administration, fluid from the gastrointestinal tract wets and penetrates the matrix leading to the formation of a hydrogel and swelling of the polymer matrix. Drug is released slowly over time in a controlled manner, independent of pH, by a process of drug dissolution followed by drug diffusion through the hydrogel barrier formed and gradual matrix erosion. Metformin Hydrochloride Extended-Release Tablets USP meets USP Dissolution Test 6. metformin-er-structure