Levothyroxine Sodium

Donepezil hydrochloride USP is a reversible inhibitor of the enzyme acetylcholinesterase, known chemically as (±)-2, 3-dihydro-5, 6-dimethoxy-2-[[1-(phenylmethyl)-4-piperidinyl]methyl]-1H-inden-1-one hydrochloride. Donepezil hydrochloride is commonly referred to in the pharmacological literature as E2020. It has an empirical formula of C24H29NO3HCl and a molecular weight of 415.96. Donepezil hydrochloride is a white crystalline powder and is freely soluble in chloroform, soluble in water and in glacial acetic acid, slightly soluble in ethanol and in acetonitrile and practically insoluble in ethyl acetate and in n-hexane..

Donepezil Hydrochloride, USP is available for oral administration in film-coated tablets containing 5 and 10 mg of donepezil hydrochloride USP.

Inactive ingredients in 5 mg and 10 mg tablets are lactose monohydrate, corn starch, microcrystalline cellulose, and magnesium stearate. The film coating contains talc, polyethylene glycol, polyvinyl alcohol, and titanium dioxide. Additionally, the 10 mg tablet contains yellow iron oxide as a coloring agent.