Aprecap 125mg/80mg capsule contains the active constituent Aprepitant in two different doses. It belongs to a class of medicines called NK1 Receptor antagonists. It is used with a combination of other medicine to prevent nausea and vomiting caused by chemotherapy (cancer treatment) in adults and children of twelve years and older. Do not take this medicine if you are allergic to this medicine or any of the other ingredients of this medicine.