Best White Fish to Eat on GLP-1 Medication
At Hamiltons Fish, white fish such as cod, haddock, pollack and hake are among the species we buy most often from Brixham Fish Market. They are also a sensible choice for anyone eating smaller meals while taking a GLP-1 medication such as Mounjaro, Wegovy or Ozempic. These medications work by reducing appetite, so portions tend to be smaller and the quality of what goes on the plate matters more. White fish is lean, high in protein for its weight, gentle on the stomach and mild in flavour, which suits an appetite that is easily satisfied.
This is a guide to choosing and cooking white fish, not medical advice. If you are on a GLP-1 medication, your prescriber or a registered dietitian is the right person to advise on your overall diet.
Why white fish suits a smaller appetite
White fish delivers a good amount of protein with very little fat, so a modest portion feels substantial without sitting heavily. The flavour is clean and mild rather than strong, which is welcome when richer or stronger-smelling foods feel less appealing. The flesh is also tender and quick to cook, so a satisfying meal does not take much effort or much room on the plate.
Protein, without the heaviness
Protein is the part of a meal that tends to keep you feeling satisfied for longest, and white fish is one of the leanest ways to include it. A fillet of cod, haddock, pollack or hake gives you a generous serving of protein in a portion that is easy to finish. Pairing it with vegetables and a little starch makes a balanced plate that does not rely on volume to feel complete.
Which white fish to choose
All of these are lean, mild and straightforward to cook:
- Cod has a firm flake and a clean flavour. It is the most familiar white fish and a good place to start.
- Haddock is a little softer than cod, with a gentle sweetness.
- Pollack is similar to cod, slightly softer in texture, and very good value.
- Hake has a fine, delicate texture and a mild, slightly sweet flavour, and it takes well to gentle cooking.
You can buy these individually or together in a White Fish Box, which is a simple way to keep a few lean portions ready to cook.
These same choices apply whether you are taking Mounjaro, Wegovy or Ozempic. For more on this, see our guide to what fish to eat on Mounjaro.
Portion sizes matter
When appetite is reduced, a smaller portion is often all you want, and there is little sense in cooking more than you will eat. A single fillet of around 140 grams is a normal serving and a useful source of protein for most people. Our fish is prepared in portions rather than as large whole pieces, so you can cook one or two at a time and keep the rest for another day. A Fish of the Day Box or a Mixed Fish Box is a practical way to keep several individual portions to hand without waste.
Simple ways to cook it
Gentle methods suit white fish and keep it tender. Baking is the easiest: a fillet in a hot oven for eight to ten minutes, with a little oil, lemon and seasoning. Steaming and poaching are even lighter and keep the flesh soft and moist. A quick pan-fry gives you a crisp skin if you would rather have a bit of texture. The main thing is not to overcook it, as white fish is done as soon as the flesh turns opaque and flakes easily. Small portions cook in minutes, which helps on days when preparing a full meal feels like too much.
Worth a look: oily fish too
White fish is the easy everyday choice, but oily fish such as salmon, mackerel and trout are worth including as well, for variety and for the omega-3 they provide. Our Omega-3 Seafood range brings these together, and a Salmon Portion Box keeps individual portions to hand.
Frequently asked questions
Is white fish good to eat when taking Mounjaro?
White fish is well suited to eating on Mounjaro and other GLP-1 medications. It is lean, mild and high in protein for its weight, so a small portion is satisfying without feeling heavy, and it is gentle on the stomach.
Which fish is easiest to digest?
Lean white fish such as cod, haddock, pollack and hake tends to be the easiest to digest, as it is low in fat and mild in flavour. Cooking it gently, by baking, steaming or poaching, keeps it light.
Is cod or salmon better on GLP-1 medication?
Both have a place. Cod and other white fish are leaner and milder, which many people find easier when appetite is low or strong flavours are off-putting. Salmon is richer and provides omega-3. Including both gives you variety. Your dietitian can advise on what suits you.
How much fish should I eat on Wegovy?
There is no single answer, and the right amount depends on you, so your prescriber or a registered dietitian is the person to ask. As a general guide, a fillet of around 140 grams is a normal serving and a useful source of protein. The common advice on GLP-1 medication is to put protein first at each meal, and lean white fish is one of the easier ways to do that.
Is fish good to eat on Ozempic?
Yes. The same qualities that make white fish suit Mounjaro and other GLP-1 medications apply to Ozempic. It is lean, mild and high in protein for its weight, so a small portion is satisfying and gentle on the stomach. Oily fish such as salmon and mackerel are worth including too, for their omega-3.
What food should I not eat on GLP-1 medication?
There is no single list, and your prescriber or dietitian is the right person to advise, but many people find that richer, heavier and deep-fried foods sit less comfortably when digestion is slower. Where fish is concerned, that points towards lighter cooking, baking, steaming, poaching or grilling, rather than a heavy batter or deep frying.
Whatever you are cooking, fresh fish prepared to order and never previously frozen gives you the cleanest flavour and the best texture. Browse the full range of lean white fish below.
