Wegovy Diet Plan: What to Eat on Wegovy UK

Important: Wegovy (semaglutide) should only be used under medical supervision. This page is informational and does not replace advice from your prescribing doctor, specialist weight management team, or dietitian.

TL;DR: On Wegovy (semaglutide), prioritise protein (to prevent muscle loss), nutrient-dense foods, and smaller meals. Avoid greasy or fried foods and sugary drinks, which can worsen side effects. Aim for 1.2–1.6g protein per kg body weight daily. NutraSafe helps you track protein, calories, vitamins and minerals to make sure you are nourishing your body properly — even when eating less.

Wegovy can significantly reduce your appetite, which is the point — but it also means every calorie you do eat needs to work harder for you. Getting your diet right on Wegovy is not about restriction. It is about making sure your body gets the protein, vitamins, and minerals it needs while you are losing weight. Here is a practical, UK-focused guide to eating well on semaglutide.

What Is Wegovy?

Wegovy is the brand name for semaglutide 2.4mg, a once-weekly injection prescribed for weight management. It belongs to a class of drugs called GLP-1 receptor agonists, which work by mimicking a natural gut hormone that regulates appetite and blood sugar.

Wegovy was approved by NICE (the National Institute for Health and Care Excellence) for use on the NHS in England in 2023. It is not a diet pill and it is not a shortcut — it is a prescription medication that works best when combined with dietary changes, increased physical activity, and behavioural support.

The active ingredient, semaglutide, slows gastric emptying (food stays in your stomach longer, so you feel full sooner) and acts on appetite centres in the brain to reduce hunger and cravings. This means you naturally eat less — but that also means you need to be more intentional about what you eat.

Why Diet Matters on Wegovy

When your appetite drops and you are eating significantly fewer calories, the nutritional stakes go up. Here is why diet is so important on Wegovy:

Muscle loss risk: Studies show that up to 40% of weight lost on GLP-1 medications can be lean mass (muscle and bone) rather than fat, particularly if protein intake is inadequate. Preserving muscle requires deliberate, consistent protein intake.
Vitamin and mineral deficiencies: Eating less food means fewer opportunities to get essential micronutrients — iron, calcium, B12, vitamin D, zinc, magnesium. Deficiencies can develop gradually and cause fatigue, hair loss, and weakened immunity.
Dehydration: Reduced appetite often means reduced fluid intake too. Nausea (a common Wegovy side effect) can make drinking feel unappealing. Dehydration worsens constipation, another common side effect.
GI side effects: The most common Wegovy side effects are gastrointestinal — nausea, vomiting, diarrhoea, constipation. What you eat can significantly reduce or worsen these symptoms.
Every calorie counts: If you are eating 1,200–1,600 calories instead of 2,000+, there is no room for empty calories. Every meal needs to deliver protein, fibre, vitamins, and minerals.

The bottom line

Wegovy handles the appetite side. Your job is to make sure the food you do eat is working as hard as possible for your body. That means protein, nutrients, and hydration — not just calories.

Foods to Eat on Wegovy

Focus on nutrient-dense foods that deliver maximum nutrition per calorie. Here is what to prioritise and why:

Food Group	Examples	Why It Matters on Wegovy
Lean protein	Chicken breast, turkey, white fish, salmon, eggs, Greek yoghurt, cottage cheese	Preserves muscle mass during weight loss. Keeps you fuller for longer. Aim to include protein at every meal.
Legumes & pulses	Lentils, chickpeas, black beans, edamame, tofu	Excellent protein and fibre. Gentle on the stomach. Good plant-based option for variety.
Vegetables	Broccoli, spinach, courgette, peppers, carrots, sweet potato	Packed with vitamins, minerals, and fibre. Low calorie, high volume. Cook them soft if nausea is an issue.
Fruits	Berries, bananas, apples, oranges, kiwi	Natural vitamins (especially vitamin C), fibre, and antioxidants. Choose whole fruit over juice.
Whole grains	Oats, brown rice, wholemeal bread, quinoa	Sustained energy, B vitamins, and fibre. Small portions — you will not need much to feel full.
Healthy fats	Avocado, olive oil, nuts (almonds, walnuts), seeds (chia, flax)	Essential fatty acids, vitamin E, and satiety. Use sparingly as they are calorie-dense, but do not eliminate them.
Dairy or alternatives	Greek yoghurt, milk, cheese, fortified plant milks	Calcium and protein. Yoghurt is often well-tolerated even when appetite is low.

A practical tip: when your appetite is very low (especially during dose increases), prioritise protein first, then vegetables, then everything else. If you can only manage a small meal, make sure protein is the foundation.

Foods to Avoid or Limit on Wegovy

Certain foods are more likely to trigger or worsen Wegovy’s gastrointestinal side effects. Others simply waste your limited calorie budget. Here is what to watch out for:

Food/Drink	Why to Limit or Avoid
Fried and greasy foods	High fat content slows digestion further (on top of Wegovy’s own gastric slowing effect), worsening nausea, bloating, and discomfort. Chips, fried chicken, and takeaway foods are common triggers.
Fizzy drinks	Carbonation can cause bloating and gas, which is worse when gastric emptying is already slowed. This includes diet fizzy drinks.
Large fatty meals	Big, heavy meals are harder to digest on Wegovy. Smaller, more frequent meals are better tolerated and reduce nausea.
Excess sugar	Sweets, biscuits, sugary cereals, and confectionery offer minimal nutrition and spike blood sugar. When you are eating less, sugar wastes precious calorie budget.
Alcohol	Wegovy changes how quickly alcohol is absorbed. Effects may hit faster. Alcohol is also empty calories, worsens nausea, and can increase acid reflux.
Very spicy foods	Can aggravate nausea and acid reflux, which are already common on semaglutide. Moderate seasoning is fine — but go easy if you are experiencing GI symptoms.

This is not about perfection. If you have a takeaway once in a while, that is fine. The goal is to make the majority of your meals protein-rich, nutrient-dense, and easy on your digestive system.

Protein Targets on Wegovy

Your protein target: 1.2–1.6g per kg body weight per day

This is higher than the general UK recommendation of 0.75g/kg. The increased target is specifically to preserve lean muscle mass during weight loss on GLP-1 medications. For an 80kg person, that is roughly 96–128g of protein per day.

Hitting this target consistently is one of the most important things you can do on Wegovy. Here is what that looks like in practice:

60kg person: 72–96g protein per day
80kg person: 96–128g protein per day
100kg person: 120–160g protein per day

Spread protein across all meals rather than loading it into one. Your body can only use so much protein at once for muscle synthesis — roughly 25–40g per meal is ideal.

Tracking your protein with an app makes a real difference. It is easy to overestimate how much protein you are eating, especially when portions are smaller on Wegovy. NutraSafe’s protein tracker shows your daily protein alongside calories, vitamins, and minerals — so you can see the full picture at a glance.

Tracking Nutrition on Wegovy with NutraSafe

Calorie counting alone is not enough on Wegovy. When you are eating less, you need to know that you are still meeting your protein, vitamin, and mineral needs. That is where NutraSafe helps.

Protein tracking: See your daily protein intake front and centre, with a clear target to hit. Know exactly how much you have had and how much you still need.
Micronutrient dashboard: Track vitamins and minerals (iron, calcium, B12, vitamin D, zinc) alongside calories. Spot gaps before they become deficiencies.
AI meal scanner: Snap a photo of your meal and NutraSafe estimates the macros and micros instantly. No manual searching or weighing required.
Barcode scanning: Scan any UK food product to see its full nutritional breakdown, including protein per serving.
Small meals, big visibility: When every meal matters more, having a clear daily view of what you have eaten and what you still need takes the guesswork out of Wegovy nutrition.

Many Wegovy users find that tracking nutrition helps them feel more confident that they are losing weight safely — not just losing weight quickly.

Sample Wegovy Day

Here is a realistic example of a day’s eating on Wegovy, designed for someone aiming for around 1,400 calories and 100g+ protein. All portions are smaller than typical — reflecting the reduced appetite most people experience.

Breakfast — Greek Yoghurt Bowl

150g 0% Greek yoghurt, 30g granola, handful of blueberries, 1 tbsp chia seeds

~280 kcal | 22g protein | Rich in calcium, fibre, antioxidants

Lunch — Chicken and Avocado Wrap

1 small wholemeal wrap, 100g grilled chicken breast, ¼ avocado, spinach, cherry tomatoes

~380 kcal | 35g protein | Lean protein, healthy fats, iron from spinach

Dinner — Salmon with Sweet Potato and Broccoli

120g baked salmon fillet, 150g sweet potato, 100g steamed broccoli, drizzle of olive oil

~480 kcal | 32g protein | Omega-3, vitamin D, vitamin C, beta-carotene

Snack — Cottage Cheese with Apple

100g cottage cheese, 1 small apple, sliced

~160 kcal | 14g protein | Calcium, slow-release protein

Daily totals

~1,300 kcal | ~103g protein | Good coverage of iron, calcium, vitamin C, vitamin D, omega-3, and fibre. Adjust portions up or down based on your individual calorie needs and how your appetite feels on a given day.

On days when nausea is worse, simplify: plain Greek yoghurt, a boiled egg, some crackers with cottage cheese, a banana. Prioritise protein and hydration above all else. You can always have a more varied day when you feel better.

Track Your Nutrition on Wegovy

See your protein, vitamins, and minerals alongside calories. Make every meal count while you are eating less. Free to download.

Download NutraSafe Free

Frequently Asked Questions

Can I drink alcohol on Wegovy?

Alcohol is not strictly prohibited on Wegovy, but it is best kept to a minimum. Wegovy slows gastric emptying, which means alcohol may be absorbed differently and you may feel its effects more quickly. Alcohol is also high in empty calories and can worsen nausea and acid reflux — two common Wegovy side effects. If you do drink, stick to small amounts, avoid sugary cocktails, and never drink on an empty stomach. Speak to your prescribing doctor if you have concerns.

How much protein should I eat on Wegovy?

Most dietitians and obesity specialists recommend 1.2 to 1.6 grams of protein per kilogram of body weight per day when taking Wegovy or other GLP-1 medications. This is higher than the general recommendation of 0.75g/kg because rapid weight loss increases the risk of losing lean muscle mass alongside fat. For an 80kg person, that means roughly 96 to 128 grams of protein per day. Prioritise protein at every meal — chicken, fish, eggs, Greek yoghurt, beans, and lentils are all excellent sources.

Will I lose muscle on Wegovy?

Muscle loss is a real concern with any significant weight loss, and Wegovy is no exception. Studies suggest that up to 40% of weight lost on GLP-1 medications can be lean mass (muscle and bone) rather than fat, particularly if protein intake is low and resistance exercise is absent. The two most effective strategies to preserve muscle are eating enough protein (1.2–1.6g per kg body weight) and doing regular resistance training (strength exercises, bodyweight exercises, or weight training). Tracking your protein intake with an app like NutraSafe can help ensure you are consistently hitting your targets.

How long does Wegovy take to work?

Wegovy is introduced gradually over a 16-week dose escalation period, starting at 0.25mg weekly and increasing to the maintenance dose of 2.4mg. Most people begin to notice reduced appetite and some weight loss within the first few weeks, but clinically significant weight loss typically becomes apparent from around week 12 onwards. In clinical trials, participants lost an average of 15% of their body weight over 68 weeks. Wegovy is intended as a long-term treatment, and weight loss continues to progress over the first 12 to 18 months.

Is Wegovy available on the NHS?

Yes, Wegovy has been approved by NICE for use on the NHS in England since 2023. To be eligible, you typically need a BMI of 35 or above (or 30 or above with at least one weight-related health condition such as type 2 diabetes or high blood pressure). It must be prescribed as part of a specialist weight management service that includes dietary support, exercise guidance, and behavioural therapy. Availability varies by area and there can be waiting lists. Wegovy is also available privately through registered clinics and pharmacies, though the cost is significant (typically £150–£300 per month).