Nonprescription availability of theophylline, epinephrine and ephedrine for asthma.
F E
FE
Simons
D001249:Asthma / Q000188:drug therapy*; D002170:Canada; D004809:Ephedrine / Q000600:supply & distribution*; D004837:Epinephrine / Q000600:supply & distribution*; D006801:Humans; D004366:Nonprescription Drugs; D013806:Theophylline / Q000600:supply & distribution*
D004366:Nonprescription Drugs; D013806:Theophylline; D004809:Ephedrine; D004837:Epinephrine