SPL Set ID: 58e4b5b3-e093-46e7-b28e-a2c4821c5b63

Tetracycline is a yellow crystalline powder. Tetracycline 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 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: C 22 H 24 N 2 O 8 ∙ HCl M.W.480.90 Each capsule, for oral administration, contains 250 mg or 500 mg tetracycline hydrochloride. Inactive Ingredients : Lactose Monohydrate, Colloidal silicon dioxide, and magnesium stearate. The 250 mg capsule shells contain Gelatin, FD & C Blue 1, Titanium Dioxide, D & C Yellow 10, and FD & C Yellow 6. The 500 mg capsule shells contain Gelatin, FD&C Blue #1, and Titanium Dioxide. The imprinting ink for the 250 mg and 500 mg capsules contains Shellac, Propylene Glycol, Black Iron Oxide, Potassium Hydroxide and Purified water.