SPL Set ID: 32a409a0-fea6-411a-8218-c1c7df46d664

Tetracycline, USP is a yellow, odorless, crystalline powder. Tetracycline, USP is stable in air but exposure to strong sunlight causes it to darken. Its potency is affected in solutions of pH below 2 and is rapidly destroyed by alkali hydroxide solutions. Tetracycline, USP is very slightly soluble in water, freely soluble in dilute acid and in alkali hydroxide solutions, sparingly soluble in alcohol, and practically insoluble in chloroform and in ether. The chemical name for tetracycline hydrochloride is 4-(Dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,-12a-pentahydroxy-6-methyl-1,11-dioxo-2-naphthacenecar-boxamide monohydrochloride. Its structural formula is as follows: Each capsule, for oral administration, contains tetracycline hydrochloride USP, 250 mg or 500 mg. Inactive Ingredients: Anhydrous lactose, magnesium stearate, and sodium lauryl sulfate. The 250 mg capsule shell contains D&C Red No. 22, D&C Yellow No. 10, FD&C Yellow No. 6, gelatin, and titanium dioxide. The imprinting ink for the 250 mg capsule contains ammonium hydroxide, black iron oxide, propylene glycol, shellac glaze. The 500 mg capsule shell contains D&C Yellow No. 10, FD&C Blue No.1, FD&C Red No. 40, gelatin, and titanium dioxide. The imprinting ink for the 500 mg capsule contains propylene glycol, shellac glaze, titanium dioxide. new