Drug details

Entereg Capsules (alvimopan capsules)

type of Peripherally-Acting Mu-Opioid Receptor Antagonists (PAMORA)

Entereg (alvimopan) is an opioid receptor antagonist that works by preventing narcotic side effects without reducing the pain-relieving effects of the drug used to speed recovery of stomach and intestinal functions after a gastrointestinal surgery and to prevent side effects caused by narcotic medications.

This drug may have the following side effects:
  • hives,
  • difficulty breathing,
  • swelling of your face, lips, tongue, or throat,
  • pain spreading to your jaw or shoulder,
  • chest pain or pressure,
  • sweating
  • anxiety,
  • nausea, and