The drug interactions we all overlook.
D001993:Bronchodilator Agents / Q000494:pharmacology*; D004347:Drug Interactions; D004809:Ephedrine / Q000494:pharmacology; D013806:Theophylline / Q000494:pharmacology
D001993:Bronchodilator Agents; D013806:Theophylline; D004809:Ephedrine