SPL Set ID: e2347581-90da-429a-b17c-cffd0039fb86
1 drug(s) with this SPL Set ID
Naproxen Tablets, USP Rx only DESCRIPTION Naproxen, USP is a propionic acid derivative related to the arylacetic acid group of nonsteroidal anti-inflammatory drugs. The chemical name for naproxen, USP is (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid. It has the following structural formula: Naproxen, USP has a molecular weight of 230.26 and a molecular formula of C 14 H 14 O 3 . Naproxen, USP is an odorless, white to off-white crystalline substance. It is lipid-soluble, practically insoluble in water at low pH and freely soluble in water at high pH. The octanol/water partition coefficient of naproxen at pH 7.4 is 1.6 to 1.8. Naproxen tablets, USP are available as yellow tablets containing 250 mg of naproxen USP, pink tablets containing 375 mg of naproxen USP, and yellow tablets containing 500 mg of naproxen USP for oral administration. The inactive ingredients are croscarmellose sodium, povidone, iron oxide yellow, iron oxide red colloidal silicon dioxide and magnesium stearate. structure