Esomeprazoledrug info

The active ingredient in NEXIUM ® (esomeprazole magnesium) delayed-release capsules for oral administration and NEXIUM (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 crystalline powder. It contains 3 moles of water of solvation and is slightly soluble in water. 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. NEXIUM is supplied in delayed-release capsules and in packets for a delayed-release oral suspension. Each NEXIUM delayed-release capsule contains 20 mg of esomeprazole (equivalent to 22.3 mg esomeprazole magnesium trihydrate) or 40 mg of esomeprazole (equivalent to 44.5 mg esomeprazole magnesium trihydrate) in the form of enteric-coated granules with the following inactive ingredients: glyceryl monostearate 40-55, hydroxypropyl cellulose, hypromellose, magnesium stearate, methacrylic acid copolymer type C, polysorbate 80, sugar spheres, talc, and triethyl citrate. The capsule shells have the following inactive ingredients: D&C Red #28, D&C Yellow #10, ethyl alcohol, FD&C Blue #1, FD&C Red #40, gelatin, isopropyl alcohol, n-butyl alcohol, polyvinyl pyrrolidone, propylene glycol, shellac, sodium hydroxide, and titanium dioxide. Each packet of NEXIUM 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:

2.5 mg esomeprazole (equivalent to 2.8 mg esomeprazole magnesium trihydrate)

5 mg esomeprazole (equivalent to 5.6 mg esomeprazole magnesium trihydrate)

10 mg esomeprazole (equivalent to 11.1 mg esomeprazole magnesium trihydrate)

20 mg esomeprazole (equivalent to 22.3 mg esomeprazole magnesium trihydrate)

40 mg esomeprazole (equivalent to 44.5 mg esomeprazole magnesium trihydrate) The inactive granules are composed of the following ingredients: citric acid, crospovidone, dextrose, hydroxypropyl cellulose, iron oxide, 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. Structural Formula