Why Ozempic Can Cause Constipation — and What Doctors Say Helps Relieve It Safely
Ozempic has become one of the most prescribed medications in America, and for many users, an uncomfortable side effect is showing up alongside the weight loss and blood sugar control: constipation. Doctors say it’s common, manageable and usually temporary — but only if you know what’s happening inside your body and how to respond.
The semaglutide medication slows the digestive system, and combined with reduced appetite and lower fluid intake, that can leave users feeling backed up for weeks at a time.
Why Ozempic Causes Constipation
Constipation showed up regularly in clinical trials of the drug. Early studies estimated that roughly 3% to 5% of participants developed it, according to GoodRx, though newer research puts the rate between 4% and 12% — and possibly higher in people using it off-label.
The mechanism is straightforward. Ozempic slows gastric emptying, meaning food moves through the stomach more slowly, according to Mochi Health. Dehydration and dietary changes can compound the problem.
“A lot of times, people get constipated because they’re dehydrated and if they’re dehydrated, they’re not able to process food,” registered dietitian Beth Czerwony told Cleveland Clinic. “So, not only is it important to have a well-balanced diet, but also to maintain your hydration status.”
How Long Ozempic Constipation Lasts
The good news: it usually doesn’t last forever. Constipation from semaglutide typically resolves in about six weeks, or roughly 47 days, according to Ro. Symptoms tend to begin in the first four weeks of treatment, though they can start anytime in the first four months. Constipation may stick around longer than other gastrointestinal side effects like nausea.
How to Find Relief From Ozempic Constipation
Fiber is the first line of defense. “The general recommendation for daily fiber intake is 38 grams for men and 25 grams for women,” Caroline Messer, M.D., an endocrinologist at Northwell Lenox Hill Hospital in New York City, told Health Central. “This can help alleviate problems like constipation, diarrhea and nausea.”
But ramp up slowly. “If you don’t normally have fiber in your diet and then all of a sudden you start pushing fiber, you could end up with diarrhea just because your gut is working a little bit harder,” Czerwony said.
Dr. Michael Ruscio recommends leaning on whole, unprocessed foods, like those featured in Mediterranean or Paleo eating plans, and adding more dietary fiber from fruits, vegetables, whole grains and beans. He also suggests foods with high water content — soups, fruits and vegetables — and avoiding concentrated sweets.
Prunes are a classic for a reason. Mochi Health notes that dried prunes or prune juice can help when you feel backed up.
A short walk after meals helps, too. “If you’re having any kind of mild nausea or constipation, go for an after-meal walk,” Czerwony said. “Doing so helps with digestion and helps relieve some of those symptoms.”
If you take a fiber supplement, pair it with enough liquid. Dr. William Yancy Jr., medical director of the Lifestyle and Weight Management Center at Duke Health, recommends drinking about 8 ounces of fluid with it.
“This can be increased by an ounce or two if stools remain hard, or decreased by that amount if they are too loose,” Yancy said. “People should avoid taking fiber capsules with just a sip of liquid. They need to be taken with a full glass.”
When to Call Your Doctor
If lifestyle changes aren’t enough, medication can help. “Constipation may require stool softeners and laxatives,” Eduardo Grunvald, M.D., director of obesity medicine at the Bariatric and Metabolic Institute at UC San Diego Health, told Health. “Nausea may require anti-nausea medications. Heartburn may require acid-blocking medications.”
Your doctor may also adjust your semaglutide dose to ease symptoms.
“Every person is different, and it may be helpful for some and uncomfortable for others,” Dr. Grunvald said.
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