SPL Set ID: 3aa9dba9-29b0-4520-a0f7-66d19d52c6bc

Metaxalone tablets, USP contain 800 mg of metaxalone and the following inactive ingredients: calcium carbonate, FD&C Red #40, hypromellose, lactose monohydrate, microcrystalline cellulose, povidone, silicone dioxide, sodium starch glycolate and sodium stearyl fumarate. Metaxalone is a muscle relaxant for oral administration. Chemically, metaxalone is 5-[(3,5- dimethylphenoxy) methyl]-2-oxazolidinone. The molecular formula is C 12 H 15 NO 3 , which corresponds to a molecular weight of 221.25 g/mol. The structural formula is: Metaxalone, USP is a white to almost white, odorless crystalline powder freely soluble in chloroform, soluble in methanol and in 96% ethanol, but practically insoluble in ether or water. 1