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Short answer How long Alvimopan takes to work Common questions Related questions Sources**Alvimopan works gradually over several days rather than within hours, and in studies it helped bowel function return roughly a day sooner after surgery.**
It is a hospital-only medicine used around bowel resection surgery to counter the gut-slowing effect of opioid pain medicine. The first dose is given 30 minutes to 5 hours before the operation, then 12 mg twice a day starting the day after, for up to 7 days or 15 total doses. You will not feel it kick in the way you feel a pain pill; the signal that it is working is passing gas, having a bowel movement, and keeping down solid food. Walking as soon as your team allows, sipping fluids, and using the smallest effective opioid dose all help your bowels restart. Alvimopan is not for home use and is not a treatment for everyday constipation.
How long Alvimopan takes to work
Common questions
How long does Alvimopan take to work?
Alvimopan is not a fast-acting drug you feel working within minutes. It is given in the hospital, starting with one dose 30 minutes to 5 hours before bowel surgery, then 12 mg twice daily afterward for up to 7 days or 15 total doses. The effect shows up as an earlier return of gut function: passing gas, having a bowel movement, and tolerating solid food. In clinical trials, people who received it reached those milestones about a day sooner than those who did not. If you are still not passing gas or stool several days after surgery, or you have vomiting or a swollen belly, tell your surgical team.