Each tablet contains memantine HCl 10 mg corresponding to 8.31 mg memantine (free base). It also contains the following inactive excipients: Lactose monohydrate, microcrystalline cellulose, colloidal anhydrous silica, talc, magnesium stearate, methacrylic acid ethyl acrylate copolymer (1:1), sodium lauryl sulfate, polysorbate 80, triacetin and simethicone emulsion.