title: Lack of effect of erythromycin on theophylline serum levels.
mesh_terms: D000328:Adult; D004917:Erythromycin / Q000494:pharmacology*; D006801:Humans; D013806:Theophylline / Q000097:blood*
chemical_list: D004917:Erythromycin; D013806:Theophylline