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What to Eat on Mounjaro or Wegovy: A Clinician's Guide for Irish Patients

7 Jul 2026

What to Eat on Mounjaro or Wegovy: A Clinician's Guide for Irish Patients

dietnutritionMounjaroWegovyIrelandproteinGLP-1meal ideas

All medical information is reviewed by our clinical partners at MedicOnline.

Dr. Jahan Khan

Dr. Jahan Khan, CMO @ MedicOnline

IMC 409788

Your appetite has dropped. Meals that used to barely touch the sides now leave you full after half a plate. Some days, food just does not appeal at all. This is the medication doing its job - but it creates a new problem that not enough people talk about.

When you are eating less, what you eat matters more. Every meal has to work harder. You cannot afford to fill a shrinking appetite with toast and tea and hope for the best. The patients who get the strongest, most sustainable results on Mounjaro or Wegovy are the ones who eat with intention - not less of everything, but more of the right things.

This guide is built around the approach our dietitians use with Bua patients. It is not a meal plan (those rarely survive contact with real life). It is a set of principles and practical ideas you can adapt to your own kitchen, your own tastes, and your own week.

The One Rule That Matters Most: Protein First

If you take one thing from this guide, make it this: eat protein at every meal, and eat it first.

When your total food intake drops - which it will on GLP-1 medication - your body needs to decide what to break down for energy. If you are not eating enough protein, your body will take it from your muscles. That is the opposite of what you want. The goal is to lose fat while keeping as much muscle as possible, because muscle is what keeps your metabolism healthy and your body strong.

How much protein

Aim for 25-30g of protein at each main meal, and include a protein source in snacks. Over a day, that puts you somewhere around 60-100g depending on your body size and activity level. Your Bua dietitian can give you a personalised target.

What counts

Chicken, turkey, fish, eggs, Greek yoghurt, cottage cheese, tofu, tempeh, beans, lentils, chickpeas. Protein powder in a smoothie is fine as a backup, but whole food sources are better because they bring other nutrients along for the ride.

For a deeper look at why protein matters so much during treatment, see our guide to protein and muscle preservation.

The GLP-1 Plate: protein first, then fill around it with vegetables and complex carbs

What a Good Day of Eating Looks Like

This is not a prescription. It is a template you can bend to fit your life, your fridge, and how hungry you feel on any given day.

Breakfast options (pick one)

  • Two scrambled eggs on one slice of wholegrain toast
  • Greek yoghurt with a handful of berries and a sprinkle of granola
  • Porridge made with milk (not water) topped with a spoon of nut butter and sliced banana
  • Smoked salmon on a small wholemeal bagel with cream cheese

Lunch options (pick one)

  • Chicken salad with mixed leaves, cherry tomatoes, cucumber, and a drizzle of olive oil
  • Lentil soup with a slice of wholegrain bread (homemade or shop-bought - Cully & Sully do a good one)
  • A wrap with hummus, grilled chicken or falafel, and whatever vegetables you have
  • Tin of tuna mixed with a small amount of mayo on two oatcakes, with a side salad

Dinner options (pick one)

  • Grilled salmon fillet with roasted sweet potato and steamed broccoli
  • Chicken stir-fry with mixed vegetables and a small portion of brown rice
  • Bean chilli with a small amount of rice or a baked potato
  • Shepherd's pie made with lean mince, topped with mashed potato (add some grated cheese for extra protein)

Snack options (if needed)

  • A small handful of nuts (almonds, cashews, walnuts)
  • A boiled egg
  • Cottage cheese with cucumber slices
  • A protein yoghurt (Skyr, Fage, or similar)
  • Apple slices with peanut butter

The portions here will probably feel smaller than what you ate before treatment. That is fine. Your appetite is lower, and the goal is nutrient density, not volume.

Eating on Low-Appetite Days

Some days - especially after a dose increase or in the first week or two at a new dose - food just does not appeal. The temptation is to skip meals entirely. Try not to.

Even on low-appetite days, aim for at least two small meals with protein. They do not need to be elaborate. A yoghurt and some fruit counts. Two eggs and a slice of toast counts. A protein shake blended with banana and milk counts.

Foods that tend to sit well when appetite is low

  • Cold foods (often easier than hot meals when nausea is present)
  • Smooth textures: yoghurt, soup, smoothies
  • Bland flavours: crackers, plain rice, toast
  • Small bites rather than a loaded plate

Foods that tend to make things worse

  • Greasy or fried food
  • Very rich or creamy sauces
  • Large portions (even looking at a full plate can put you off)
  • Spicy food, especially if nausea is present
  • Carbonated drinks

For more detail on managing nausea and other digestive side effects through food, see our guides to Mounjaro side effects and alcohol on treatment in our post on drinking and medical weight loss.

The Hydration Piece

Dehydration is behind a surprising number of side-effect complaints in the first few months. Constipation, headaches, fatigue, and worsened nausea can all be linked to not drinking enough water.

Aim for 1.5 to 2 litres a day. Water, herbal tea, and diluted squash all count. Tea and coffee count too, though try not to rely on caffeine for your fluid intake.

A practical trick: keep a 750ml bottle on your desk or in your bag and aim to finish it twice during the day. That gets you to 1.5 litres without thinking about it.

What About Alcohol?

Alcohol and GLP-1 treatment is a topic in its own right. The short version: you can still drink, but your relationship with alcohol is likely to change. Calories from alcohol displace the nutrition your body needs, and drinking lowers inhibitions around food choices (hello, late-night chipper).

We have a full guide on alcohol and medical weight loss that covers this in detail, including practical tips for navigating Irish social life on treatment.

When to Get Personalised Help

This guide covers the fundamentals, but everyone's situation is different. If you have specific dietary needs (coeliac, vegetarian, food allergies), if you are struggling to eat enough, or if you want a structured plan tailored to your goals, that is what our dietitian support is for.

Bua's programme includes access to specialist dietitians as part of your monthly fee. This is not an optional extra or an upsell - it is built into the programme because clinical guidelines recommend nutritional support alongside GLP-1 medication, and we agree.

Already on treatment and want dietary support? Bua's programme includes dietitian access alongside your medical care.

If you have not started treatment yet and want to check whether you qualify, you can do that online in under 4 minutes. Eligibility is assessed by an IMC-registered doctor, and a prescription is not guaranteed.

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What to Eat on Mounjaro or Wegovy: A Clinician's Guide for Irish Patients