SPL Set ID: f907e633-4080-44ae-829f-141497876922

The active ingredient in esomeprazole magnesium for delayed-release oral suspension is bis(5-methoxy-2-[(S)-[(4-methoxy-3,5-dimethyl-2-pyridinyl)methyl]sulfinyl]-1 H- benzimidazole-1-yl) magnesium, a PPI. Esomeprazole is the S-isomer of omeprazole, which is a mixture of the S- and R- isomers. (Initial U.S. approval of esomeprazole magnesium: 2001). Its molecular formula is (C 17 H 18 N 3 O 3 S) 2 Mg with molecular weight of 713.1 on an anhydrous basis. The structural formula is: The magnesium salt is a white to slightly colored crystalline powder. The stability of esomeprazole magnesium USP is a function of pH; it rapidly degrades in acidic media, but it has acceptable stability under alkaline conditions. At pH 6.8 (buffer), the half-life of the magnesium salt is about 19 hours at 25°C and about 8 hours at 37°C. Esomeprazole magnesium for delayed-release oral suspension is supplied in packets. Each packet of esomeprazole magnesium for delayed-release oral suspension contains esomeprazole, in the form of enteric-coated pellets, and also inactive granules. 10 mg esomeprazole (equivalent to 10.353 mg esomeprazole magnesium USP) The inactive granules are composed of the following ingredients: citric acid monohydrate, colloidal silicon dioxide, crospovidone, dextrose monohydrate, ferric oxide yellow, hydroxy propyl cellulose and xanthan gum. Esomeprazole 10 mg pellets contains following ingredients: ethyl cellulose, magnesium oxide (light), magnesium stearate, methacrylic acid and ethyl acrylate copolymer dispersion, mono and diglycerides, polysorbate 80, povidone, sugar spheres 60-80 mesh, talc and triethyl citrate. The esomeprazole pellets and inactive granules are constituted with water to form a suspension and are given by oral, nasogastric, or gastric administration. Image