Research Area: Neurological Disease Biological Activity: Aprepitant is an antiemetic chemical compound that belongs to a class of drugs called substance P antagonists (SPA). It mediates its effect by blocking the neurokinin 1 (NK1) receptor. Aprepitant is used for prevention of acute and delayed chemotherapy-induced nausea and vomiting (CINV) and for prevention of postoperative nausea and vomiting.[1]References on Aprepitant (MK-0869)[1] http://en.wikipedia.org/wiki/Aprepitant, ,