What actually helps with Wegovy side effects

The decision that matters first: push through or adjust?

When Wegovy side effects hit, you're really making one decision: is this discomfort that will settle with some practical changes, or a signal to slow down, pause or seek help? Getting that call right matters more than any specific remedy.

The NHS semaglutide guidance describes the side-effect profile clearly: nausea, vomiting, diarrhoea, constipation, burping, indigestion and fatigue are all listed as common. They're directly linked to how semaglutide works, slowing gastric emptying changes what your gut is used to. That's not a malfunction; it's the medicine doing its job, and your digestive system takes a few weeks to recalibrate.

For most people the worst window is the first week or two after starting or after moving up to a higher dose. If you know that going in, you can plan around it, keeping meals small, choosing bland foods, staying on top of fluids. The side effects don't usually keep intensifying; they peak, then fade. If they aren't fading after two weeks at a stable dose, or if they're severe enough to stop you eating or drinking, that's when a conversation with your prescriber comes in. Our aftercare team is available seven days a week for exactly this reason.

What helps nausea, burping and digestive discomfort

Nausea is the side effect most people ask about, and the fixes are more practical than pharmaceutical. Eating smaller portions, more slowly, reduces the volume hitting a stomach that's already emptying more slowly than usual. Fatty, rich or very spicy foods tend to be harder to tolerate in the early weeks; plainer options (plain crackers, rice, boiled chicken) are easier. Cold or room-temperature food often sits better than hot meals for some people.

Timing matters too. Eating close to bedtime can make nausea worse overnight. A light dinner earlier in the evening, rather than a larger meal late, is something a lot of people find genuinely useful. Ginger (whether as tea, biscuits or capsules) has a reasonable evidence base for nausea generally, though it won't suit everyone.

Sulfur burps are less talked about but a real frustration for some people on semaglutide. They tend to be worse when food sits in the stomach longer than usual. Staying upright after eating, reducing high-sulfur foods (eggs, garlic, red meat in large quantities) and eating slowly can all help, and there's a more detailed look at what causes them and what to try on our sulfur burps page.

For nausea specifically, we've put together a dedicated nausea guide that covers both dietary adjustments and the point at which anti-nausea medicines might be appropriate, always discussed with a prescriber first.

What helps constipation and diarrhoea

Semaglutide affects gut motility, which can go either way. Constipation is common (especially at higher doses) and hydration is the first fix most people overlook. Aiming for six to eight glasses of water across the day (more if the weather's warm or you're active) makes a difference, as does increasing fibre steadily. Fruit, vegetables, wholegrains and legumes are all useful, though adding too much fibre too quickly can make bloating worse, so build gradually.

Light movement after meals (a short walk rather than sitting still) encourages the gut to keep things moving. If constipation is persistent, a gentle osmotic laxative (such as lactulose or macrogol) may be appropriate; this is worth raising with a prescriber or pharmacist rather than self-managing for weeks.

Diarrhoea tends to be more common at the start or after a dose increase. It usually settles within a few days. The priority here is staying hydrated, particularly if it's frequent, because dehydration can follow quickly. Plain, easily digestible foods and avoiding high-fat or very sugary options while the gut settles tends to help. Persistent or severe diarrhoea that isn't improving is a reason to get clinical advice promptly, because significant fluid loss can affect kidney function, a point the NHS highlights explicitly in its semaglutide guidance.

When to get medical help, and what to watch for

This is the part of the side-effect conversation that shouldn't be buried. Most Wegovy side effects are manageable. A few are not.

Seek urgent medical help if you develop severe abdominal pain that doesn't ease and radiates towards your back, with or without vomiting. This is the symptom pattern the MHRA associated with acute pancreatitis in its January 2026 Drug Safety Update on GLP-1 medicines, a known but infrequent risk. Pancreatitis is serious, and waiting it out at home is not the right call. If in doubt, call 111 or go to A&E.

Other reasons to get help promptly: signs of a serious allergic reaction (swelling of the face, lips or throat, difficulty breathing); gallbladder symptoms such as severe pain in the upper right abdomen, particularly after eating; signs of significant dehydration (dizziness, very dark urine, not passing urine for hours) after prolonged nausea or diarrhoea; and any sudden changes in mood, low mood or thoughts of self-harm, report these to your GP or call 111 immediately.

You can also report any suspected side effect via the MHRA Yellow Card scheme directly. It contributes to ongoing safety monitoring of Wegovy in the UK, and patients can submit reports themselves. For a fuller picture of everything Wegovy may cause, the complete Wegovy side effects overview covers the full spectrum, from very common to rare, and if you want to go deeper on any particular reaction, our guides to what side effects can come from Wegovy and what the side effects of Wegovy actually involve are good places to start. If you're considering starting treatment, our prescribers discuss side effects, personal risk factors and what to expect as part of every free consultation, check your eligibility to get started.