SPL Set ID: 1e55800d-f77c-4950-a6d7-2055f4c7ea17

Telmisartan and Hydrochlorothiazide Tablets, USP are a combination of telmisartan, USP an orally active angiotensin II antagonist acting on the AT 1 receptor subtype, and hydrochlorothiazide, USP a thiazide diuretic. Telmisartan, USP a non-peptide molecule, is chemically described as 4’-[[4-methyl- 6-(1-methyl-2-benzimidazolyl)-2-propyl-1-benzimidazolyl] methyl]-2-biphenylcarboxylic acid. Its empirical formula is C 33 H 30 N 4 O 2 , its molecular weight is 514.62, and its structural formula is: Telmisartan, USP is a white or slightly yellowish crystalline powder. It is practically insoluble in water, slightly soluble in methanol, sparingly soluble in methylene chloride and it dissolves in 1M sodium hydroxide. Hydrochlorothiazide, USP is a white or practically white, practically odorless, crystalline powder with a molecular weight of 297.74. It is very slightly soluble in water, and freely soluble in sodium hydroxide solution, in n -butylamine and in dimethylformamide, sparingly soluble in methanol; insoluble in ether, in chloroform and dilute mineral acids. Hydrochlorothiazide, USP is chemically described as 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: Telmisartan and Hydrochlorothiazide Tablets, USP are formulated for oral administration in three combinations of 40 mg/12.5 mg, 80 mg/12.5 mg, and 80 mg/25 mg telmisartan, USP and hydrochlorothiazide, USP respectively. The tablets contain the following inactive ingredients: colloidal silicon dioxide, crospovidone, hypromellose, lactose monohydrate, magnesium stearate, mannitol, meglumine, povidone K-25, sodium hydroxide, sodium stearyl fumarate and talc. As coloring agents, the 40 mg/12.5 mg, 80 mg/12.5 mg, and 80 mg/25 mg tablets contain ferric oxide red, the 80 mg/25 mg tablets also contain ferric oxide yellow. Telmisartan and Hydrochlorothiazide Tablets, USP are hygroscopic and require protection from moisture. FDA approved dissolution test specifications differ from USP. structure1 structure2