Bosentan is: (A) Endothelin receptor blocker, (B) ACEI, (C) IIb/IIIa receptor blocker, (D) None of the above
Answer is A. It is a dual endothelial receptor antagonist. FDA has approved the use of Bosentan for Raynaud's phenomenan, pulmonary aery hypeension. Ref: HL Sharma 3rd ed,Vasoactive peptides