GLP-1 Diet: What to Eat, What to Limit, and Why

There is no official GLP-1 diet. The prescribing information for Zepbound, Mounjaro, Wegovy and Ozempic says the weekly injection can be given with or without meals and does not list foods to eat or avoid. What exists instead is a set of eating habits that make the medicine easier to live with and protect the muscle you are carrying while the scale drops. This page lays them out as five rules, each with its source, and links to the 7-day meal plan, the food list and recipes with their GLP-1 Meal Score.

Why eating changes on a GLP-1

The medicines slow the rate at which food leaves your stomach and turn down appetite. The Zepbound prescribing information describes this delayed gastric emptying and notes that the effect is largest after the first dose and lessens over time. Two things follow. A large or fatty meal sits longer than it used to, which is where nausea, fullness and heartburn come from. And with a small appetite, every bite has to count: eat the way you did before and you can run short of protein and fiber without noticing.

The labels also report that most nausea, vomiting and diarrhea happened during dose escalation and decreased over time. The rules below matter most in the first months and after each dose increase.

Rule 1: Protein first

Eat the protein on your plate before the rest. Appetite can switch off a few bites in, and if those bites were bread or salad the protein never arrives. A 2025 joint advisory from four US nutrition and obesity societies (ACLM, ASN, OMA and The Obesity Society) reports recommendations of 1.2 to 2.0 g of protein per kg of adjusted body weight a day during major weight loss, or 80–120 g a day as a simpler target, and suggests eating protein-rich foods first in a meal.

In practice that is 20–40 g at each of three meals plus a protein snack. A palm-sized piece of chicken or fish, three eggs, a cup of Greek yogurt or cottage cheese, or a cup of lentils each land in that range. The high-protein foods ranking shows which foods give the most protein per calorie, the GLP-1 protein calculator turns your weight into a daily number, and the GLP-1 side effects guide covers why protein and strength training matter for muscle during fast weight loss.

Rule 2: Small meals, eaten slowly

Lilly's own side-effect guidance for Zepbound tells people with nausea to eat smaller meals and to stop eating when they feel full. Three meals and a snack, each about the size of your two cupped hands, works for most people; some do better with four or five smaller plates. Eat slowly, put the fork down between bites, and stop at comfortable, not full. A stomach that empties slowly punishes the last few bites.

Rule 3: Fiber, increased gradually

Fiber keeps digestion moving when the medicine slows it, which is why constipation is one of the common side effects on every label. The Dietary Guidelines for Americans set fiber at 14 g per 1,000 calories, which works out to 22–34 g a day for adults depending on age and sex. At the smaller intake typical on a GLP-1, 25 g a day is a reasonable aim. Get there over two or three weeks, not overnight, because a sudden jump brings bloating and gas. Vegetables, berries, beans, lentils, oats and chia seeds carry the most fiber for the least volume.

Rule 4: Fluids, on purpose

People on these medicines often drink less because they feel full, and the labels warn that vomiting or diarrhea can lead to dehydration and kidney problems. The National Academies set adequate total water at about 2.7 liters a day for women and 3.7 liters for men, from all drinks and foods, with about 80% coming from drinks. Drink on a schedule rather than on thirst, keep water between meals rather than with them if a full stomach bothers you, and use broth, herbal tea or an unsweetened electrolyte drink on sick days.

Rule 5: Go easy on the foods that sit heavily

No food is banned, but some are more likely to make side effects worse, especially in the first weeks and after a dose increase: fried and greasy food, rich creamy or cheesy dishes, fatty and processed meats, sugary drinks and sweets, very spicy or acidic food, alcohol, and large portions of anything. The foods to avoid on a GLP-1 article goes through each with the source and an easier swap. Most people limit these rather than cut them out, and a food that does not sit well in month one is often fine later.

What a day looks like

That shape is what the 7-day GLP-1 meal plan fills in with recipes from the GLP AI app, each with its score and per-portion nutrition. For individual foods, the GLP-1 food list sorts them by group, and the everyday foods pages show what the app returned when it scored them.

Shot day and the days after

Many people find the day of the injection and the one or two after it the hardest for appetite and nausea. The app's Recipes tab files cold, no-cook and low-odor dishes under Shot day for that reason, and the recipes hub shows the same list. A smaller portion, something cold, and protein you can sip (a shake, a smoothie, a yogurt) are the usual answers. The nausea page covers when a bad day needs a call to your prescriber.

How the GLP-1 Meal Score fits in

GLP AI scores a logged meal from 0 to 100: protein and fiber raise it; sugar, sodium, saturated fat and heavy processing lower it. It is the same scorer behind every recipe on this site, so the number on a recipe page is the number the app gives that meal. Photograph a plate or type what you ate and the app returns the score with the reasons, which is the quickest way to see whether your own meals follow the five rules. How the GLP-1 Meal Score works.

Who should get individual advice

This guide is general. If you have diabetes and take insulin or a sulfonylurea, kidney disease, a history of pancreatitis or gallbladder disease, an eating disorder, or you are pregnant or breastfeeding, the right pattern for you is a conversation with your prescriber or a registered dietitian, not a web page.