What is "relcovaptan"

n. A certain vaptan drug proposed for the treatment of Raynaud's disease, dysmenorrhoea, and tocolysis.

Relcovaptan (SR-49059) is a non- peptide vasopressin receptor antagonist, selective for the V1a subtype. It has shown positive initial results in tests against Raynaud's disease, dysmenorrhoea, and tocolysis, although it is not yet approved for clinical use.