| abstract |
A composition for the administration of a drug in the colon that contains a first polysaccharide and a second polysaccharide wherein both polysaccharides are degradable by colon enzymes and mixed at an environmental pH of about 7 or more. A selective pharmaceutical composition for the colon and a dosage form for the oral administration of a drug, the nutrient, diagnostic reagent, or mixture thereof that includes the drug, the nutrient, the diagnostic reagent, or mixtures thereof they contact the polysaccharide composition. A method for preparing this administration composition in the colon of a drug and the selective pharmaceutical composition for the colon and the dosage form are also described. |