Pharmacology All of the following are true regarding sumatriptan except: September 2009 A 99% oral bioavailability B Contraindicated in coronary aery disease C Constricts cranial vessels D Selective 5-HT 1B/1D receptor agonist 💡 Explanation All of the following are true regarding sumatriptan except: September 2009 ✓ Correct Answer: A. 99% oral bioavailability