| abstract |
Embodiments of the invention generally provide pharmaceutical drug compositions, methods of preparing oral drug compositions, such as extended release dosage compositions, and methods for treating antidepressant or smoking cessation. In one aspect, the invention provides a pharmaceutical formulation comprising a core, including bupropion and its salt derivatives, and a coating. The coating may include one or more surfactants and aqueous dispersions of one or more insoluble pharmaceutical acceptable polymers. The core may also include aqueous dispersions of one or more insoluble pharmaceutical acceptable polymers. In another aspect, the invention provides methods for preparing and administering a pharmaceutical composition in oral dosage form, such as a tablet. |