Generic substitution: a dilemma for the allergist.
Triplett
R F
RF
D000486:Allergy and Immunology; D001249:Asthma / Q000188:drug therapy; D006801:Humans; D010353:Patient Education as Topic; D010817:Physician-Patient Relations; D013806:Theophylline / Q000627:therapeutic use; D013810:Therapeutic Equivalency
D013806:Theophylline