How Much Protein Do You Need on a GLP-1?

The short answer

A common target while you’re losing weight is roughly 1.2 to 2.0 grams of protein per kilogram of body weight per day — for many people that lands somewhere around 90 to 140 grams, depending on your size. Aim to spread it across the day in three or four meals of about 25 to 30 grams each, rather than one big hit. Protein matters more than usual on a GLP-1 because the medication works partly by lowering your appetite, so you’re eating less overall — and enough protein is what helps your body hold onto muscle while the fat comes off.

Your rough daily target

Your body weight

90 g

Gentle start

a floor to aim for

120 g

Muscle-focused

where the muscle payoff plateaus

150 g

Higher end

upper end of common guidance

Grams of protein per day, from about 1.2 to 2.0 g per kilogram of body weight. It’s a starting range, not a prescription — protein needs vary from person to person, so personalize it with your provider or a dietitian, especially if you have kidney concerns, where a lower target is often right.

Your doctor probably said ‘get enough protein’ and left it there. Here’s what ‘enough’ actually means in grams on a GLP-1, and how to divide it up so it’s doable on a smaller appetite.

How much protein, in real numbers

The usual starting point for anyone losing weight is about 1.2 to 2.0 grams of protein per kilogram of body weight per day. Use the calculator above to turn your own weight into a gram target — but as a rough feel, a 70 kg (155 lb) person lands somewhere around 85 to 140 grams a day, with many aiming near the middle.

You don’t need to chase the very top of that range. For building and keeping muscle specifically, the payoff from more protein tends to level off around 1.6 grams per kilogram per day, so most people do well aiming somewhere in the middle. Pick a number, hit it consistently, and adjust from there.

Why protein matters more on a GLP-1

GLP-1 medications work partly by turning down your appetite, which means you’re simply eating less food across the day. When total intake drops, protein is often the first thing to fall short — and it’s the nutrient your body most needs to hold onto muscle while you’re in a calorie deficit.

This is where higher protein earns its keep. In a meta-analysis of 24 weight-loss trials in more than a thousand people, higher-protein, calorie-reduced diets led to greater fat loss and better preservation of lean mass, which includes muscle, than standard-protein diets. Same weight loss, better composition underneath it.

Spreading it across the day

Your body can only put so much protein to work for muscle in one sitting, so how you divide it matters. The research points to roughly 0.4 grams per kilogram of body weight per meal, spread across four or so meals — for most people that’s about 25 to 30 grams per meal.

On a GLP-1 this is actually good news: you probably can’t eat a huge protein-heavy dinner anyway. Three or four smaller, protein-forward meals are easier on a limited appetite than one large one — and they line up neatly with how your body uses protein best.

The hard part — and the fix

The genuine challenge isn’t knowing your number; it’s hitting it when a few bites leave you full. The fix is one habit: make protein the priority at every meal, before the bread, the salad, or the sides.

From there it’s tactics. If a full plate is too much, lean on protein-dense, low-volume foods; if you can’t face food at all, a shake can close the gap; and on queasy days, cooler and blander protein tends to go down easier. Each of those has its own guide below.

Protein gives your body the material to keep muscle; training is the signal that tells it to use it. Mira is the AI coach for the training half — it builds your sessions and scores your form through your phone, so the protein you work so hard to eat has something to hold onto.

Build my plan

Common questions

How much protein do I need on a GLP-1?+

A common target while losing weight is about 1.2 to 2.0 grams of protein per kilogram of body weight per day — for many people roughly 90 to 140 grams, depending on body size. For muscle specifically the benefit tends to level off near 1.6 g/kg, so the middle of that range is a sensible aim; your exact figure depends on your body weight.

Does protein timing matter, or just the daily total?+

The daily total matters most, but spreading it helps. Research points to roughly 25 to 30 grams of protein per meal across three or four meals to make the most of each one — which also happens to be easier on a smaller appetite than a single large serving.

Why is protein such a big deal on a GLP-1 specifically?+

Because the medication works partly by reducing your appetite, so you’re eating less overall — and protein is the nutrient that helps your body hold onto muscle while you lose fat. In weight-loss studies, higher-protein diets preserved more lean mass, which includes muscle, than standard-protein ones.

Keep reading

How to Get Enough Protein on a GLP-1

A repeatable strategy to hit your protein on a GLP-1 when appetite is small — eat protein first, anchor small meals, and use a shake to close the gap.

High-Protein Foods for a Small Appetite on a GLP-1

The most protein-dense, low-volume foods for when a few bites fill you up on a GLP-1 — what to grab, how much each gives, and easy no-cook picks.

Protein Shakes on a GLP-1

When a protein shake helps on a GLP-1 and how to choose one you can tolerate — food first, shakes to fill the gap, and what to check on the label.

The Easiest Protein to Tolerate on a Queasy GLP-1 Day

When your stomach is queasy on a GLP-1, some proteins are easier to get down — cool, bland, low-fat picks and small-sip tips to still hit your protein.

Vegetarian Protein on a GLP-1 When Your Appetite Is Small

How to hit your protein target on a GLP-1 as a vegetarian, even with a small appetite — the densest plant and dairy options and how to combine them.

Does Protein Alone Protect Your Muscle on a GLP-1?

Is enough protein enough to hold muscle on a GLP-1, or do you also have to lift? The honest answer — protein is the material, training is the signal.

Strength training on a GLP-1

A beginner’s guide to strength training while losing weight on a GLP-1 — how to hold onto muscle, at home, in 15 minutes a day.