Emend is generically known as aprepitant and falls under a group of drugs known as Miscellaneous antiemetics. Emend is used to prevent nausea and vomiting. Due to its complex chemical structure, Emend is contraindicated for patients undergoing therapy involving drugs such as Propulsid or Orap. Such drugs may interact with Emend and cause threatening side effects to the patient. Moreover, Emend can make birth control pills less effective therefore resulting g in pregnancy, it is therefore important not to take Emend alongside pregnancy pills as well.