Aminophylline.
D000628:Aminophylline / Q000494:pharmacology*; D003964:Diaphragm / Q000187:drug effects*; D006801:Humans; D009119:Muscle Contraction / Q000187:drug effects*; D013806:Theophylline / Q000097:blood
D000628:Aminophylline; D013806:Theophylline