Abstract: Provided herein is a method of treating a condition in a host that is responsive to an agonist, the method comprising administering to the host a multi-layer pharmaceutical composition comprising the agonist and an antagonist thereof, wherein the agonist and antagonist are not in direct contact with one another in the intact form of the composition.

Abstract: Provided herein is a method of treating a condition in a host that is responsive to an agonist, the method comprising administering to the host a multi-layer pharmaceutical composition comprising the agonist and an antagonist thereof, wherein the agonist and antagonist are not in direct contact with one another in the intact form of the composition.

Abstract: Described is a pellet composition comprising a core element comprising morphine sulfate, a filler and a binder, wherein the morphine sulfate, calculated as the anhydrous form, comprises about 50 wt % to about 85 wt % of the total weight of the core element; and a coating disposed on at least a portion of the core element, the coating comprising an insoluble matrix polymer which is insoluble at pH 1 to 7.5; an enteric polymer which is insoluble at pH 1 to 4 and soluble at pH 6 to 7.5; and an acid soluble polymer which is soluble at a pH of 1 to 4, wherein the ratio of the acid soluble polymer to the enteric polymer is 1.45:1 to 2.5:1 on a weight basis. Also described are dosage forms comprising the disclosed pellets.

Abstract: A dosage form comprising a plurality of pellets, the pellets comprising a core element comprising morphine sulfate, a filler and a binder, wherein the morphine sulfate, calculated as the anhydrous form, comprises about 50 wt % to about 85 wt % of the total weight of the core element; and a controlled-release coating disposed on at least a portion of the core element, the coating comprising an insoluble matrix polymer which is insoluble at pH 1 to 7.5; an enteric polymer which is insoluble at pH 1 to 4 and soluble polymer which is soluble at a pH of 1 to 4, wherein the ratio of the acid soluble polymer to the enteric polymer is 1.45:1 to 2.5:1 on a weight basis, wherein the Cmax of the dosage form differs by less than 20% when administered to a mammalian subject in the fed state compared to the fasted state. Also included are methods of increasing patient compliance by administering the disclosed dosage form to a mammalian subject.