<prompt> Relcovaptan is ?Angiotensin antagonistRenin inhibitorVasopressin antagonistACE inhibitor  <response>: Ans. isci.e., Vasopressin antagonistVasopressin receptor antagonists VaptansAt V1A receptor - RelcovaptanAt V1B receptor - NelivaptanAt V2 receptor - Lixivaptan, sotavapton, tolvaptan, mozavaptanNon-selective - Conivapton 