Is Alvimopan addictive?
Last updated September 7, 2026.
**No, alvimopan is not addictive, and it does not cause cravings, tolerance, or withdrawal.** Alvimopan is an opioid receptor blocker that works almost entirely in the gut and does not meaningfully reach the brain, so it produces no high and no dependence. It is used in the hospital after bowel surgery to help the intestines start moving again, and dosing is capped at 15 doses over a maximum of 7 days. That cap comes from a cardiovascular safety concern seen with long term use in a different setting, not from any risk of addiction. The medicine you may worry about is the opioid pain reliever given alongside it, since that class can cause dependence. Ask your surgical team how they plan to taper opioid pain medicine once you are eating and moving.
What to do
- Separate the two drugs: Alvimopan treats slow bowels after surgery, while the opioid next to it treats pain and is the one with dependence risk.
- Expect a short course: Treatment stops at 15 doses or 7 days, and it is given only during your hospital stay.
- Report recent opioid use: Tell your surgical team if you took opioids daily in the week before surgery, since that changes how alvimopan is used.
- Watch your gut response: Tell a nurse about cramping, diarrhea, or nausea after a dose so the team can adjust your care.
- Plan the opioid step down: Ask what your pain plan looks like at discharge and how soon you can switch to non-opioid options.
- Ask when it matters: Talk with a clinician if you have a history of opioid use disorder, heart disease, or liver or kidney problems before surgery.
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