Sumatriptan exerts antimigraine action through which receptors?: (A) 5HT1D/1B, (B) 5 HT2, (C) 5HT3, (D) 5HT4
Answer is A. Ans. is 'a' i.e., 5HT ID/IB * Sumatriptan is the first selective 5-HT1D/1B receptor agonist; activates other subtypes of 5-HT1 receptors only at very high concentrations, and does not interact with 5-HT2, 5-HT3, 5-HT4-7, a or b adrenergic, dopaminergic, cholinergic or GABA receptors.