title: Drug interaction: decreased serum concentrations of rifampicin when given with P.A.S.
mesh_terms: D000284:Administration, Oral; D000636:Aminosalicylic Acids / Q000008:administration & dosage*; D004336:Drug Antagonism; D006801:Humans; D012293:Rifampin / Q000008:administration & dosage* / Q000097:blood; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*
chemical_list: D000636:Aminosalicylic Acids; D012293:Rifampin