SPL Set ID: d2021060-94d7-3e1d-e053-2995a90a10ee

Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5, losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 and losartan potassium and hydrochlorothiazide tablets, USP 100/25 combine an angiotensin II receptor blocker acting on the AT1 receptor subtype and a diuretic, hydrochlorothiazide USP. Losartan potassium USP, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[p-(o-1H-tetrazol-5-ylphenyl)benzyl]imidazole-5-methanol monopotassium salt. Its molecular formula is C22H22ClKN6O, and its structural formula is: Losartan potassium Losartan potassium USP is a white to off-white free-flowing crystalline powder with a molecular weight of 461.01. It is freely soluble in water, soluble in alcohols, and slightly soluble in common organic solvents, such as acetonitrile and methyl ethyl ketone. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. Hydrochlorothiazide USP is 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide. Its molecular formula is C7H8ClN3O4S2 and its structural formula is: Hydrochlorothiazide Hydrochlorothiazide USP is a white, or practically white, crystalline powder with a molecular weight of 297.74, which is slightly soluble in water, but freely soluble in sodium hydroxide solution. Losartan potassium and hydrochlorothiazide tablets are available for oral administration in three tablet combinations of losartan and hydrochlorothiazide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 contains 50 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 contains 100 mg of losartan potassium USP and 12.5 mg of hydrochlorothiazide USP. Losartan potassium and hydrochlorothiazide tablets, USP 100/25 contains 100 mg of losartan potassium USP and 25 mg of hydrochlorothiazide USP. Inactive ingredients are microcrystalline cellulose, lactose monohydrate, pregelatinized starch, colloidal silicon dioxide, magnesium stearate, hydroxypropyl cellulose, hypromellose, and titanium dioxide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 and losartan potassium and hydrochlorothiazide tablets, USP 100/25 also contain yellow ferric oxide. Losartan potassium and hydrochlorothiazide tablets, USP 50/12.5 contains 4.24 mg (0.108 mEq) of potassium, losartan potassium and hydrochlorothiazide tablets, USP 100/12.5 contains 8.48 mg (0.216 mEq) of potassium, and losartan potassium and hydrochlorothiazide tablets, USP 100/25 contains 8.48 mg (0.216 mEq) of potassium.