Homepharmacology All are OTC drugs except.. Tegretol publisher :NIL NAM -May 23, 2017 All are OTC drugs except: a- Biscodil b- Aspirin. c- Antacids. d- Tegretol.*** Labels pharmacology Facebook Twitter Share:All are OTC drugs except.. Tegretol Facebook Twitter WhatsApp Pinterest LinkedIn Reddit Tumblr Telegram Email