The best for you that your family doctor check your progress at regular appointments to make sure that this drug is help you and to check for unwanted effects.
Oral contraceptives - birth control pills may not work properly if you take them while you are taking aprepitant. Unplanned pregnancies may occur. You must use a various or additional means os birth control while you are taking aprepitant. If you have any questions about this, check with your health care professional.
If your symptoms do not improve or if they become worse, check with your family doctor.
Do not take other medication unless they have been discussed with your family doctor.