Drug interactions in the GI tract.
D004064:Digestive System / Q000187:drug effects*; D004304:Dosage Forms; D004347:Drug Interactions; D005502:Food; D005769:Gastrointestinal Motility / Q000187:drug effects; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007408:Intestinal Absorption / Q000187:drug effects; D004364:Pharmaceutical Preparations / Q000008:administration & dosage
D004304:Dosage Forms; D004364:Pharmaceutical Preparations