Pharmacology Dihydroergotamine differs from ergotamine in the following respect : A It is a more potent oxytocic B It has antiemetic property C It has high oral bioavailability D It is more potent Ξ±-adrenergic blocker and less potent vasoconstrictor π‘ Explanation Dihydroergotamine differs from ergotamine in the following respect : β Correct Answer: D. It is more potent Ξ±-adrenergic blocker and less potent vasoconstrictor