What to take for constipation while on Wegovy

Step 1: Start with fluids and fibre, the two things that matter most

Before reaching for any medicine, look at what you are drinking and eating each day. Dehydration makes constipation noticeably worse, and many people on Wegovy eat less overall, which can mean they are also drinking less. Aiming for around six to eight glasses of water or other non-caffeinated fluids across the day is a reasonable starting point, worth building into your routine rather than trying to catch up in one go.

Dietary fibre gives your bowel something to work with. Soluble fibre (oats, lentils, apples, flaxseed) softens stools; insoluble fibre (wholegrain bread, vegetables, bran) adds bulk and helps things move. If your appetite has dropped significantly on Wegovy, getting enough fibre through food alone can be harder, so a daily psyllium husk supplement (available without a prescription from most pharmacies and supermarkets) is a practical addition. Add it gradually, too much at once can cause bloating. The NHS patient information page for semaglutide lists constipation among the common side effects and also recommends staying well hydrated and eating a high-fibre diet.

One quick habit worth building: before you make your morning drink, run a mental check, did you drink enough yesterday? It takes under a minute and catches the days when life gets busy and fluids slip.

Step 2: When lifestyle steps are not enough, over-the-counter options

If fibre and fluids have not shifted things after a few days, an over-the-counter laxative is a sensible next step. The main types work in different ways, and knowing which to reach for first makes a difference.

Osmotic laxatives (such as macrogol, sold as Laxido or Movicol) draw water into the bowel and are widely regarded as a good first choice for the kind of constipation that comes with GLP-1 medicines. They are gentle, effective for most people, and available from any pharmacy. Bulk-forming laxatives (ispaghula husk, brand name Fybogel) work similarly to dietary fibre and are safe for regular use, drink plenty of water with them. Stool softeners such as docusate can help if stools feel hard and difficult to pass.

Stimulant laxatives (senna, bisacodyl) are best kept for short-term use when other options have not worked, rather than as a first choice. If you are taking any other medicines alongside Wegovy, it is worth asking a pharmacist whether there are any interactions before adding a new product. For more detail on what specifically helps, the treating constipation on Wegovy page goes through the evidence behind each option.

Step 3: Movement and routine, the often-overlooked piece

Physical activity genuinely helps bowel motility. Even a short daily walk encourages peristalsis, the muscular contractions that move things through your gut. This does not need to be strenuous, fifteen to twenty minutes of movement most days is enough to make a difference for many people.

Routine also matters. Your bowel responds to regular timing. Try sitting quietly in the morning, ideally after breakfast (or after your morning drink if your appetite is low), rather than rushing past the urge. Ignoring the urge repeatedly makes constipation harder to shift. For practical day-to-day tips beyond just laxatives, the guidance on helping constipation while on Wegovy pulls together the full picture of lifestyle adjustments that people find useful alongside their treatment.

The wider Wegovy side effects page covers how constipation fits into the overall GI pattern, including which symptoms tend to ease over time and which deserve more attention. If you want to understand more about why this side effect happens in the first place, the Wegovy constipation page explains the underlying reasons it occurs and how common it is. If you are already experiencing it and want targeted advice, the page on how to stop constipation on Wegovy walks through the most effective steps to get things moving again.

When to get medical help

Constipation on Wegovy is common and usually manageable, but some symptoms should not be treated at home and warrant prompt attention.

Contact your GP or go to A&E if you experience: severe abdominal pain, especially pain that radiates to your back; vomiting that will not settle; no bowel movement for more than a week despite trying the measures above; signs of dehydration (dark urine, dizziness, confusion); or any rectal bleeding. Severe, persistent stomach pain that spreads to the back can be a sign of pancreatitis, a serious but rare condition linked to GLP-1 medicines, the MHRA highlighted this in a Drug Safety Update issued in January 2026. This is a different sensation from ordinary constipation discomfort and should not be confused with it.

If constipation is significantly affecting your quality of life or is not responding to the steps above, raise it with your prescriber before your next scheduled review. Dose timing or titration pace can sometimes be adjusted, and a prescriber can rule out other causes. At nume, our prescribers discuss side effects including bowel changes as part of every consultation, you can start a free consultation if you have not yet begun treatment or have questions about switching. If you are already a patient and have concerns, our aftercare team is available seven days a week via the contact page.