How much protein should you eat on a GLP-1?

Appetite suppression makes your protein target both harder to hit and more important. How to think about the number, and how to reach it.

If you're on semaglutide or tirzepatide (Ozempic, Wegovy, Mounjaro, Zepbound), you've probably been told to eat more protein. It's the most common advice in every GLP-1 community, and it's correct. But "more" isn't a number, and when your appetite has dropped off a cliff, hitting any number can feel impossible.

Why protein matters more on a GLP-1

When you lose weight quickly, some of it is fat and some is lean muscle. Studies on rapid weight loss suggest a real share of the loss can come from lean mass, in some cases a quarter to a third of the total. Muscle is hard to rebuild, so holding onto it while you lose is much easier than getting it back later.

Protein is how you do that. Eating enough protein, along with some resistance exercise, tells your body to keep muscle while it drops fat. A GLP-1 works against this in two ways. You eat less overall, and the appetite drop tends to push filling protein foods off the plate first.

So how much?

Dietitians often point to a range of about 0.6 to 0.8 grams of protein per pound of your goal body weight per day. For a lot of people that comes out to roughly 80 to 120 grams a day. Someone with a 150-pound goal weight might aim for 90 to 120 grams.

Two caveats:

This is general nutrition guidance, not a prescription. The right target for you depends on your body, your kidneys, your activity, and your goals, so set it with your doctor or a dietitian, especially if you have any kidney condition.
The best number is the one you actually hit. A steady 90 grams you reach every day does more than a perfect 130 you keep missing.

The hard part: hitting it with no appetite

Knowing the number is easy. Eating it when three bites fill you up is not. A few things that help:

Eat the protein first. Whatever is on the plate, start with the protein before the carbs and vegetables. If you fill up fast, you want those few bites to have been the chicken, not the rice.
Small and often beats big. Three large protein meals may not be realistic. Four or five small ones add up: a few bites of Greek yogurt, a hard-boiled egg, a couple ounces of deli turkey.
Liquid protein counts. On days when solid food is a struggle, a shake gets you 20 to 30 grams without a full meal.

Why tracking helps

Most people are surprised when they start logging. The protein they assumed was plenty turns out to be half of it. When portions are small the math stops being obvious, and a lunch that felt substantial might have been 12 grams instead of 30.

Logging your protein for a week or two replaces the guess with a number you can see. You don't have to do it forever. Most people just need long enough to reset their sense of what a day's protein really looks like.

That reset is why we built Protein Diary. Protein in grams instead of vague "servings," logged in about two taps, with a food library sized for small appetites. No account and no cloud, so your food and weight stay on your phone, and it puts together a clean summary for your doctor when you want one.

You don't need our app to start, though. Set a number with your provider, eat the protein first, and check the math for a week. See how Protein Diary works.

Protein Diary is a personal tracking tool, not medical advice or a medical device, and it does not recommend doses or treatment. The protein ranges above are general nutrition guidance, not a prescription, so always follow the advice of your healthcare provider or dietitian. Medication names are trademarks of their respective owners, and Protein Diary is not affiliated with any pharmaceutical manufacturer.