memantine and donepezil - Medication Listings

Memantine and donepezil hydrochlorides extended-release capsules contain memantine, an orally active NMDA receptor antagonist, as the hydrochloride salt and donepezil, a reversible inhibitor of the enzyme acetylcholinesterase, as the hydrochloride salt. Memantine Hydrochloride The chemical name for memantine hydrochloride is 1-amino-3,5-dimethyladamantane hydrochloride with the following structural formula: The molecular formula is C 12 H 21 N•HCl and the molecular weight is 215.76. Memantine hydrochloride occurs as a fine white to off-white powder. Donepezil Hydrochloride The chemical name for donepezil hydrochloride is 2,3-dihydro-5,6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-one hydrochloride. The molecular formula is C 24 H 29 NO 3 •HCl and the molecular weight is 415.96. Donepezil hydrochloride is a white crystalline powder. Memantine and donepezil hydrochlorides extended-release capsules Memantine and donepezil hydrochlorides extended-release capsules for oral administration, containing 14 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (14 mg/10 mg) or 28 mg memantine hydrochloride extended-release and 10 mg donepezil hydrochloride (28 mg/10 mg). All doses of memantine and donepezil hydrochlorides extended-release capsules contain the following inactive ingredients: colloidal silicon dioxide, ethyl cellulose, hydroxypropylmethyl cellulose, lactose monohydrate, microcrystalline cellulose, sugar sphere, talc. The hard gelatin capsules contain gelatin, sodium lauryl sulfate and titanium dioxide; colorants are iron oxide red (28 mg/10 mg). The black ink contains black iron oxide, propylene glycol and shellac. str str