Entereg and Kengreal

• Generic Name: alvimopan
• Dosage Forms: capsule
• Other Brand Names: Entereg

Entereg (alvimopan) reduces certain side effects of narcotic medicines that are often used to prevent pain caused by surgery. Narcotic medicine can cause stomach pain, bloating, nausea, vomiting, and constipation. These side effects can delay recovery in patients undergoing gastrointestinal surgery.

Entereg helps prevent these side effects without reducing the pain-relieving effects of the narcotic.

Entereg is used to help restore normal digestive functioning after surgery to remove a portion of your intestine. This medicine is available only under a special program for short-term use (no more than 15 doses). You must be registered in the program and understand the risks and benefits of taking this medicine.

• Generic Name: cangrelor
• Dosage Forms: injection, powder, lyophilized, for solution
• Other Brand Names: Kengreal

• It is used to lower the chance of heart attack, the need for some heart treatments, or blockage of a stent after a stent is placed in the heart.
• It may be given to you for other reasons. Talk with the doctor.