aprepitant

noun

aprep·​i·​tant ə-ˈpre-pə-tənt 

: an antiemetic drug C₂₃H₂₁F₇N₄O₃ taken orally to prevent nausea and vomiting occurring as a consequence of cancer chemotherapy or surgery

Note: Aprepitant acts as an antagonist of receptors for substance P. It is often taken in combination with other antiemetic drugs and is marketed under the trademark Emend.