Abstract: This invention relates to the development of a composition formulation and method employed to alter the absorption site of orally administrated drugs, to promote the absorption of bioactive lipophilic and/or hydrophilic compounds from the gastrointestinal tract, and as a result to increase drug bioavailability. Applications of the methods and formulations according to the invention are also described. The composition formulation comprises pharmaceuticals or nutraceuticals (hydrophilic and/or lipophilic compounds) in combination with one or more organic solvents and one or more acid protectants. The composition formulation is formulated into a dosage form, which is in conformity with pharmaceutical or nutraceutical requirements, is administrated orally to facilitate the absorption, and can avoid undesired degradation and metabolism of pharmaceuticals and nutraceuticals in the gastrointestinal tract thereby increasing their overall bioavailability.