Abstract: The present invention provides immediate release and modified release oral dosage forms. Specifically, the invention provides modified and immediate release pharmaceutical dosage forms containing memantine that exhibit an enhanced release profile and provide reliable absorption. The dosage forms may be used to treat mild, moderate or severe Alzheimer's disease or neuropathic pain.

Abstract: Pursuant to the present invention it has been found that a modified release composition containing the low solubility and permeability drug, lercanidipine may be prepared that provides for therapeutically effective plasma concentrations of lercanidipine for 24 hours. The modified release composition of the present invention release pulses of lercanidipine based on the pH of the use environment. An effective quantity of dissolved lercanidipine is released throughout the GI Tract.

Abstract: The present invention provides an immediate release composition for the low solubility drug, lercanidipine. The immediate release composition of the present invention comprises a core; a first layer, comprising lercanidipine, a surfactant and a binder, and optionally, a second layer comprising a film coating.

Abstract: The present invention provides pharmaceutical compositions given once daily containing at least one therapeutically active ingredient selected from the group consisting of memantine and a pharmaceutically acceptable salt of memantine, and a pharmaceutically acceptable polymeric matrix carrier. The dosage forms of the invention sustain the release of the therapeutically active agent from about 4 to about 24 hours when said dosage form is exposed to aqueous solutions. following entry of said form into a use environment, wherein said dosage form has a dissolution rate of more than about 80% after passage of about 6 hours to about 12 hours following said entry into said use environment.