Should theophyllines be sold over the counter?
D006801:Humans; D004366:Nonprescription Drugs / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D013806:Theophylline / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use
D004366:Nonprescription Drugs; D013806:Theophylline