SPL Set ID: e691b51e-2e31-4408-81c4-5afec6f9bbb6

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 trihydrate, 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 x 3 H 2 O with molecular weight of 767.2 as a trihydrate and 713.1 on an anhydrous basis. The structural formula is: The magnesium salt is a white to slightly colored powder. It contains 3 moles of water of solvation and is soluble in methanol, slightly soluble in water, practically insoluble in heptane. The stability of esomeprazole magnesium 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 is supplied in packets for a delayed-release oral suspension. Each packet of esomeprazole magnesium for delayed-release oral suspension contains 5 mg of esomeprazole (equivalent to 5.6 mg esomeprazole magnesium trihydrate USP) or 20 mg of esomeprazole (equivalent to 22.3 mg esomeprazole magnesium trihydrate USP) or 40 mg of esomeprazole (equivalent to 44.5 mg esomeprazole magnesium trihydrate USP) in the form of enteric-coated granules with the following inactive ingredients: hydroxypropyl cellulose, hypromellose, magnesium carbonate, magnesium oxide, methacrylic acid and ethyl acrylate copolymer dispersion (contains copolymer based on ethyl acrylate and methacrylic acid, polysorbate 80 and sodium lauryl sulfate), mono-and di-glycerides, polysorbate 80, sugar spheres (which contains liquid glucose, starch (maize) and sucrose), talc and triethyl citrate. Each packet of esomeprazole magnesium for delayed-release oral suspension contains esomeprazole, in the form of same enteric-coated granules used in NEXIUM delayed-release capsules, and also inactive granules. The inactive granules are composed of the following ingredients: citric acid anhydrous, crospovidone, dextrose, ferric oxide yellow, hydroxypropyl cellulose and xanthan gum. The esomeprazole granules and inactive granules are constituted with water to form a suspension and are given by oral, nasogastric, or gastric administration. str