SPL Set ID: 1ae817aa-5221-4387-a457-306785140741

Losartan potassium is an angiotensin II receptor blocker acting on the AT 1 receptor subtype. Losartan potassium, a non-peptide molecule, is chemically described as 1 H -Imidazole-5-methanol,2-butyl-4-chloro-1-[[2’-(1 H -tetrazol-5-yl)[1,1’-biphenyl]-4-yl]methyl]-, monopotassium salt. Its empirical formula is C 22 H 22 CIKN 6 O, and its structural formula is: Losartan potassium, USP is a white to almost white crystalline powder with a molecular weight of 461.00. It is freely soluble in water and in methanol, slightly soluble in acetonitrile. Losartan Potassium Tablets, USP are available as tablets for oral administration containing either 25 mg, 50 mg or 100 mg of losartan potassium, USP and the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose and pregelatinized corn starch. The tablets are coated with Opadry Green which contains D&C Yellow #10 Aluminum Lake, FD&C Blue #2, polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide. Losartan potassium tablets USP, 25 mg, 50 mg and 100 mg tablets contain potassium in the following amounts: 2.12 mg (0.054 mEq), 4.24 mg (0.108 mEq) and 8.48 mg (0.216 mEq), respectively. FDA approved dissolution test specifications differ from USP. structure