Patent ID: 7939522

Claim:
A dosage form of a pharmaceutical composition which comprises an effective amount of a centrally-acting acetylcholinesterase inhibitor for the treatment of Alzheimer's disease selected from the group consisting of rivastigmine, galanthamine, lycoramine, analogs of galanthamine, and analogs of lycoramine wherein said analogs of galanthamine or lycoramine are compounds wherein one or more of the methoxy, hydroxy or N-methyl groups is replaced as follows: the methoxy group by another alkoxy group of from two to six carbon atoms, a hydroxy group, hydrogen, an alkanoyloxy group, a benzoyloxy or substituted benzoyloxy group, a carbonate group or a carbamate group; the hydroxy group by an alkoxy group of from one to six carbon atoms, hydrogen, an alkanoyloxy group, a benzoyloxy or substituted benzoyloxy group; a carbonate group or a carbamate group; the N-methyl group by hydrogen, alkyl, benzyl or a cyclopropylmethyl group or a substituted or unsubstituted benzoyloxy group; said centrally-acting acetylcholinesterase inhibitor having a half life of from one to eleven hours wherein the acetylcholinesterase inhibitor is formulated so as to delay its activity for a predetermined period of from four to twelve hours such that acetyl-cholinesterase inhibition is avoided during such predetermined period.