Wegovy is a prescription-only weekly injection licensed in the UK for weight loss.1 It works by turning down your appetite, but what you eat still plays a big part in your results. Knowing what to eat on Wegovy helps you lose weight steadily, get the nutrients you need and keep side effects like nausea in check.
This guide covers the best foods to build your meals around, what to limit, a 3-day meal plan, portion tips and how to eat when side effects flare. We've also included practical advice for Christmas and other celebrations, so a big occasion doesn't knock you off track.
Wegovy makes eating less easier. Your food choices decide whether that smaller amount still keeps you healthy and full of energy.
Why does diet matter on Wegovy?
The active ingredient in Wegovy, semaglutide, copies a natural gut hormone called GLP-1. It tells your brain you're full, curbs hunger and slows down how quickly your stomach empties.1
It's highly effective. In a major clinical trial, people taking the full 2.4mg dose lost an average of 14.9% of their body weight over 68 weeks, alongside diet and exercise support.2
But Wegovy is licensed for use alongside a reduced-calorie diet and more physical activity.3 To lose weight, you still need to be in a calorie deficit, which means taking in fewer calories than your body uses.
Because you're eating less, every meal matters more. Nutrient-dense food helps you get enough protein, fibre, vitamins and minerals. Protein in particular helps protect your muscle as you lose weight.
Think of Wegovy as turning down the volume on hunger. The quality of what's on your plate is still up to you.
To see how results can build up over time, read our Wegovy week-by-week results guide.
What to eat on Wegovy
The NHS Eatwell Guide is a great starting point.4 Aim for a mix of fruit and vegetables, wholegrain carbs, lean protein, some dairy or alternatives, and small amounts of healthy fats.
Fruit and vegetables
Fruit and veg should make up just over a third of what you eat each day. Aim for at least 5 portions, and mix up the colours.4 Fresh, frozen, tinned and dried all count.
They're high in fibre and water, so they fill you up for relatively few calories.
Wholegrain carbohydrates
Starchy carbs should make up another third or so of your diet.4 Choose wholegrain versions like brown rice, oats, wholewheat pasta, barley, quinoa and wholemeal bread.
They keep more of their fibre than white versions, which means steadier energy and longer-lasting fullness.
Lean protein
Protein helps you hold on to muscle while you lose weight. Good options include chicken and turkey breast, fish, eggs, lower-fat Greek yoghurt, cottage cheese, beans, lentils and tofu.4
Try to include oily fish such as salmon, mackerel or sardines once a week. Plant-based eaters can turn to tempeh, edamame, seitan and fortified soya drinks.
Healthy fats
You only need small amounts of fat, but the type matters. Unsaturated fats from olive oil, nuts, seeds and avocado are better choices than saturated fats from butter, fatty meat and pastries.4
Drinks
Aim for 6 to 8 glasses of fluid a day. Water, lower-fat milk and sugar-free drinks all count.4
If you follow a vegan diet, it can be harder to get enough vitamin B12. A supplement such as OneVit Vitamin B12 can help, and vitamin B12 contributes to normal red blood cell formation.
Build each meal around protein and veg first, then add a smaller portion of wholegrain carbs. It's a simple rule that works at home or eating out.
Foods to avoid or limit on Wegovy
No food is completely off limits. But some make it harder to stay in a calorie deficit or can make side effects worse.
Sugary foods and drinks
Cakes, biscuits, sweets, full-sugar fizzy drinks and fruit juice pack in calories without much nutrition. They're easy to overdo and won't keep you full for long.
Fried, fatty and heavily processed foods
Fried food, pastries, takeaways and processed meats like bacon and salami tend to be high in calories, saturated fat and salt. Fatty food also takes longer to digest, which can add to the feeling of fullness and discomfort some people get on Wegovy.
Spicy and greasy meals (if you're feeling sick)
If you have nausea, indigestion or diarrhoea, rich, greasy or very spicy meals can make things worse. You may be able to enjoy them again once side effects settle.
Alcohol
Alcohol adds calories with little nutritional value, and it can make you hungrier and less careful about what you eat. It can also make stomach side effects such as nausea worse.
Easy swaps
- Fizzy drinks for sparkling water or sugar-free versions
- Fried chips for oven-baked or air-fried potatoes
- Fatty or processed meats for chicken, turkey or fish
- White rice, bread and pasta for wholegrain versions
- Cakes and pastries for fruit with Greek yoghurt
- Creamy sauces for tomato-based sauces, herbs and spices
- Sugary mixers for diet mixers or soda water
You don't need to give up your favourites for good. Small, regular swaps add up to a big difference over weeks and months.
A 3-day Wegovy meal plan
These ideas follow the Eatwell Guide and combine protein, fibre and healthy fats to keep you full. Vegetarian and vegan swaps are in brackets.
Day 1
- Breakfast - Greek yoghurt with kiwi, pumpkin seeds and a drizzle of honey (vegan: higher-protein fortified soya yoghurt with agave)
- Lunch - grilled turkey burger in a wholegrain bun with salad and roasted courgette (vegetarian and vegan: bean or tofu burger, with grilled portobello mushroom on the side)
- Dinner - stuffed peppers with quinoa, black beans, sweetcorn and salsa
- Snack - mixed berries with a few walnuts
Day 2
- Breakfast - spinach, mushroom and tomato omelette with wholegrain toast (vegan: tofu scramble)
- Lunch - salmon and avocado sushi with edamame beans (vegetarian and vegan: tofu, avocado and cucumber rolls)
- Dinner - herby chicken breast with roasted butternut squash and asparagus (vegetarian: halloumi, vegan: roasted chickpeas)
- Snack - celery sticks with almond butter
Day 3
- Breakfast - chia pudding made with almond milk, topped with strawberries and a little granola
- Lunch - tuna and mixed bean salad with rocket, tomatoes and olive oil dressing (vegetarian: boiled egg, vegan: extra beans or tofu)
- Dinner - grilled sea bass with wild rice and green beans (vegetarian: grilled aubergine with lentils, vegan: marinated tempeh)
- Snack - rice cakes with mashed avocado and radish
Portion control tips on Wegovy
Wegovy helps you feel full sooner. These habits help you make the most of it.
- Plan meals ahead - you're less likely to grab a takeaway when there's something ready at home.
- Portion out snacks - tip nuts or crackers into a small bowl rather than eating from the bag.
- Drink water before meals - a glass of water 15 to 20 minutes before eating can help you feel satisfied with less.
- Slow down - put your fork down between bites and chew properly.
- Wait before seconds - give it 20 minutes. Your hunger may have passed by then.
Eating slowly really does seem to help. In one small study, people who took 24 minutes to eat a meal rather than 6 felt fuller two hours later and ate around 25% less from snacks afterwards.5
Your stomach needs time to tell your brain it's full. Slowing down gives that signal a chance to catch up.
What to eat on Wegovy to ease side effects
Stomach side effects such as nausea, vomiting, diarrhoea and constipation are very common on Wegovy, especially when you start or move up a dose. They're usually mild to moderate and tend to ease over time.3 See our full Wegovy side effects guide for more.
Nausea, vomiting and diarrhoea
Stick to bland, lower-fat foods that are easy to digest, such as plain chicken, white rice, toast or crackers. Eat smaller meals more often and stop as soon as you feel full.
Sip fluids regularly through the day, especially if you've been sick or had diarrhoea, so you don't get dehydrated. If you keep being sick or can't keep fluids down, speak to a pharmacist or GP.
Constipation
Increase fibre gradually with vegetables, beans, oats and wholegrains, and drink plenty of fluids. If it doesn't improve, speak to our clinical team before trying any new medicines.
Low energy
Slow-release carbs like oats, sweet potatoes and barley, plus a little healthy fat, help keep your energy steady. Try not to skip meals, as this can leave you tired and dizzy.
Severe, ongoing stomach pain, with or without vomiting, can be a sign of pancreatitis, an uncommon but serious side effect.3 If this happens, stop using Wegovy and get medical help straightaway.
Normal side effects tend to come and go. Pain that is severe and does not settle is different, and it should never be put down to "just the injection".
How to enjoy Christmas and other celebrations on Wegovy
Christmas, birthdays, weddings and nights out often revolve around food and drink. You don't need to sit them out. A bit of planning lets you enjoy the occasion and still feel good the next day.
Christmas dinner (and other big meals)
Wegovy may mean you feel full much sooner than you used to, so a festive plate can look different this year. Start with the turkey or nut roast and plenty of veg, like sprouts, carrots and parsnips. Then add smaller spoonfuls of roast potatoes, stuffing and pigs in blankets.
Eat slowly, enjoy the conversation and stop when you're comfortably full. Overeating a very large, rich meal is one of the quickest ways to bring on nausea or indigestion.
Party food and buffets
Buffets make it easy to graze without noticing. Use a small plate, fill half of it with protein and veg such as prawns, chicken skewers or crudités with dips, and step away from the table to eat.
Having a proper meal before you go can stop you arriving hungry and filling up on pastry and crisps.
Festive drinks
Mulled wine, cream liqueurs and sugary cocktails can be surprisingly high in calories. If you drink, pick lower-calorie options like a spirit with a diet mixer, alternate each drink with water, and try a low or no-alcohol option or two.
Keep an eye on how you feel. Alcohol can make nausea and other stomach side effects worse.
Desserts and treats
Fancy a mince pie or a slice of Christmas pudding? Have one and enjoy it. Sharing a dessert or choosing a smaller portion lets you join in without feeling uncomfortably full.
Leftovers and the days after
Turn leftover turkey and veg into soups, salads or wraps rather than a second round of everything. A walk after a big meal is a great family tradition to start, too.
Keeping your injection routine over the holidays
Try to stick to your usual injection day, even when routines go out of the window. If you need to move your injection day, there must be at least 3 days between doses.3
If you forget a dose, take it as soon as you remember, as long as it's within 5 days. If more than 5 days have passed, skip it and take your next dose on your usual day.3
Do not take two doses close together to catch up on a missed injection. If it's been more than 5 days, skip it and carry on as normal.
Travelling over the holidays? Check the leaflet in your pack for how to store your pen while you're away.
Frequently asked questions
Can you drink alcohol on Wegovy?
Yes, you can drink alcohol while taking Wegovy, but it’s best to keep it to a minimum. Alcohol adds calories with little nutrition, can make you hungrier and may worsen side effects such as nausea. If you do drink, choose lower-calorie options, alternate with water and stay within the UK guideline of no more than 14 units a week.
How many calories should I eat on Wegovy?
It depends on your age, size and activity level. As a general guide, the NHS suggests around 2,000 calories a day for women and 2,500 for men to maintain weight. To lose weight, you need to eat less than your body uses, often by around 500 to 600 calories a day. Our clinical team can help you find the right target.
Can you eat Christmas dinner on Wegovy?
Absolutely. Fill up on turkey or a nut roast and plenty of vegetables first, then add smaller portions of roast potatoes, stuffing and the extras. Eat slowly and stop when you’re comfortably full, as overdoing a large, rich meal is a common trigger for nausea and indigestion on Wegovy.
What happens if you eat too much on Wegovy?
Eating more than your body needs can slow or stop your weight loss, even on Wegovy. Because the medicine slows how quickly your stomach empties, large or rich meals can also bring on nausea, indigestion, bloating or vomiting. Smaller, balanced meals usually feel much more comfortable.
Can you skip meals on Wegovy?
It’s best not to skip meals regularly. Eating consistently helps you get enough nutrients, keeps your energy steady and makes it less likely you’ll overeat later. If nausea is making it hard to eat, try smaller, more frequent meals and bland foods such as toast, crackers or plain rice instead of going without.
What should I do if I stop losing weight on Wegovy?
Weight loss often slows over time, partly because a smaller body needs fewer calories. Look again at your portion sizes, snacks and drinks, and try adding more activity, such as walking or strength exercises. If your progress has stalled for several weeks, speak to your prescriber, who can review your treatment.
References
- Medicines and Healthcare products Regulatory Agency. GLP-1 medicines for weight loss and diabetes: what you need to know. GOV.UK; 2025. gov.uk
- Wilding JPH, Batterham RL, Calanna S, et al. Once-weekly semaglutide in adults with overweight or obesity. New England Journal of Medicine. 2021;384(11):989-1002. doi:10.1056/NEJMoa2032183
- Novo Nordisk Limited. Wegovy 0.25 mg FlexTouch solution for injection in pre-filled pen: Summary of Product Characteristics. Electronic Medicines Compendium; 2025. medicines.org.uk/emc
- NHS. The Eatwell Guide. NHS website; 2022. nhs.uk
- Hawton K, Ferriday D, Rogers P, et al. Slow down: behavioural and physiological effects of reducing eating rate. Nutrients. 2019;11(1):50. doi:10.3390/nu11010050
This article is intended for informational purposes only and does not replace professional medical advice. Always read the patient information leaflet supplied with your medication and speak to a healthcare professional if you have specific concerns.