DESCRIPTION
The active ingredient in ZEGERID™ (omeprazole) powder for oral suspension, is a substituted benzimidazole, 5-methoxy-2-[[(4-methoxy-3, 5-dimethyl-2-pyridinyl) methyl]sulfinyl]-1 H -benzimidazole, a racemic mixture of two enantiomers that inhibits gastric acid secretion. Its empirical formula is C17H19N3O3S, with a molecular weight of 345.42. The structural formula is:
Omeprazole is a white to off-white crystalline powder which melts with decomposition at about 155°C. It is a weak base, freely soluble in ethanol and methanol, and slightly soluble in acetone and isopropanol and very slightly soluble in water. The stability of omeprazole is a function of pH; it is rapidly degraded in acid media, but has acceptable stability under alkaline conditions.
ZEGERID™ Powder for Oral Suspension is supplied in unit dose packets as an immediate-release formulation to be constituted with water for oral administration. Each packet contains 20 mg of omeprazole and the following excipients: sodium bicarbonate, sucrose, sucralose, xanthan gum, xylitol, and flavorings.
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