Abstract: Memantine compositions and methods of use are described herein. In some embodiments, the compositions comprise memantine and an absorption enhancer, or memantine and an elimination enhancer, or memantine and an absorption enhancer and an elimination enhancer.

Abstract: Compositions, methods of making compositions and methods of treating cough are described herein. In some embodiments, the compositions are lozenges comprising memantine and an alkalinizing agent.

Abstract: Memantine compositions and methods of use are described herein. In some embodiments, the compositions comprise memantine and an absorption enhancer, or memantine and an elimination enhancer, or memantine and an absorption enhancer and an elimination enhancer.

Abstract: Memantine compositions and methods of use are described herein. In some embodiments, the compositions comprise memantine and an absorption enhancer, or memantine and an elimination enhancer, or memantine and an absorption enhancer and an elimination enhancer.

Abstract: Disclosed are new compounds that increase the absorption of pharmaceutical agents across mucous membranes. These absorption enhancers allow higher bioavailability of administered drugs. The enhancers advantageously have low or no cytotoxicity.

Abstract: Enteric compositions comprising one or more tight junction agonists and/or one or more tight junction antagonists are provided. Compositions of the invention may comprise a delayed-release coating disposed over a tight junction agonist and/or tight junction antagonist layer which may be disposed over an inert core. Delayed-release coatings may be substantially stable in gastric fluid and substantially unstable in intestinal fluid, thus providing for substantial release of the tight junction agonist and/or antagonist from the composition in the duodenum or jejunum of the small intestine.