How much protein should I eat on a GLP-1 medication?

The general adult reference intake is about 0.8 g/kg of body weight per day, but during weight loss higher intakes of roughly 1.2–1.6 g/kg/day are associated with better preservation of lean muscle. The right target depends on your body and health, so confirm it with your dietitian or doctor.

Why does protein matter so much on GLP-1 medications?

These medications reduce appetite, so you naturally eat less. Prioritising protein helps protect lean muscle while you lose weight and helps smaller portions feel more satisfying.

What if I can only manage small meals?

Spread protein across a few small meals and snacks, and eat the protein on your plate first. On low-appetite days, easy options like Greek yogurt, milk, or a protein shake can help you reach your target.

High-Protein Foods for Your GLP-1 Journey

Published 28 May 2026Evidence-based · 3 sources

When you're on a GLP-1 medication such as tirzepatide (Mounjaro) or semaglutide, your appetite is smaller and you eat less overall. That makes protein quality more important than ever: with fewer total calories, each meal has to work harder for you.

Why protein matters more on GLP-1

The general reference intake for adults is about 0.8 g of protein per kilogram of body weight per day — enough to prevent deficiency, but not necessarily optimal while you're losing weight. During weight loss, higher protein intakes (around 1.2–1.6 g/kg/day) are associated with better preservation of lean muscle mass, and meta-analysis shows a dose–response relationship between protein intake and muscle. Protein is also the most filling macronutrient, so it helps smaller portions feel satisfying.

This is general nutrition information, not a personalised plan. Confirm your own protein target with your healthcare team — especially if you have kidney disease, where protein may need to be limited.

Easy high-protein foods

Not sure how much you need?Calculate your protein target →

You don't need anything fancy — these everyday foods do the heavy lifting:

Food	Typical protein
Greek yogurt (200 g, non-fat)	~20 g
Chicken or turkey breast (100 g cooked)	~30 g
Eggs (2 large)	~12 g
Lentils (1 cup cooked)	~18 g
Tofu (150 g, firm)	~17 g
Cottage cheese (150 g)	~17 g
Canned tuna (1 small tin)	~25 g
Milk or soy milk (250 ml)	~8 g

How to hit your target on a small appetite

Lead with protein. Eat the protein on your plate first, before bread, rice, or sides.
Spread it out. Aim for some protein at each meal and snack rather than one large serving.
Keep easy wins on hand. Greek yogurt, cottage cheese, eggs, edamame, and ready-cooked chicken are quick to grab.
Drink some of it. On days when chewing feels like too much, milk, kefir, or a simple protein shake counts too.

Pair good protein intake with regular movement and some resistance (strength) exercise — together they're your best tools for keeping muscle while the fat comes off.

Frequently asked questions

How much protein should I eat on a GLP-1 medication?: The general adult reference intake is about 0.8 g/kg of body weight per day, but during weight loss higher intakes of roughly 1.2–1.6 g/kg/day are associated with better preservation of lean muscle. The right target depends on your body and health, so confirm it with your dietitian or doctor.
Why does protein matter so much on GLP-1 medications?: These medications reduce appetite, so you naturally eat less. Prioritising protein helps protect lean muscle while you lose weight and helps smaller portions feel more satisfying.
What if I can only manage small meals?: Spread protein across a few small meals and snacks, and eat the protein on your plate first. On low-appetite days, easy options like Greek yogurt, milk, or a protein shake can help you reach your target.