What to Eat on a GLP‑1: Foods to Favor and Avoid on Zepbound, Wegovy and Ozempic

The advisory's core advice is to eat a diverse range of nutrient-dense, minimally processed foods, because GLP-1s cut how much people eat and that raises the risk of falling short on nutrients.1 The advisory was written jointly by the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association and The Obesity Society.1

The advisory also says supplements can be considered for nutrients at risk, such as vitamin D, calcium, vitamin B12 or a multivitamin, tailored to the person.1

The food advice for Zepbound is the same as for other GLP-1s, because the advisory covers semaglutide and tirzepatide together.1 The Zepbound label says the injection can be taken at any time of day, with or without meals.2 Tirzepatide decreases calorie intake, and the label says this is likely through effects on appetite.2

Zepbound slows stomach emptying, and the label says the delay is largest after the first dose and lessens over time.2 The advisory notes that foods high in protein or fat slow gastric emptying further, which can worsen constipation, while foods with more water and a lower calorie density, such as many fruits and vegetables, empty faster.1

Wegovy and Ozempic contain semaglutide, and the advisory's food list applies to both.1,3,4 Wegovy injection can be taken with or without food.3 The Wegovy tablet is different: the Medication Guide says to take it on an empty stomach in the morning with no more than 4 ounces of water, and to wait 30 minutes before eating, drinking or taking other oral medicines.3 For more on the tablet, see our Wegovy pill guide or compare oral GLP-1 programs.

Ozempic is approved for adults with type 2 diabetes, so people taking it are usually also following a diabetes eating plan set with their care team.4

No GLP-1 label lists forbidden foods, but the advisory names the foods to minimize or avoid: refined carbohydrates, sugar-sweetened beverages, red and processed meats, most fast foods, ultraprocessed sweets and savory snacks.1,2,3

For side effects specifically, the advisory adds:1

• Fatty and high-fiber foods in the first few days. Avoiding them early in treatment can ease nausea.
• Large meals. Vomiting is more likely with large meals.
• Large or high-fat meals when you have diarrhea. Avoiding them can help.
• Alcohol. It may worsen nausea and reflux on GLP-1 therapy and should be minimized.

Our article on alcohol on a GLP-1 covers the label warnings that overlap with drinking.

The advisory cites 0.8 g of protein per kilogram of body weight per day as the general adult recommended allowance, and notes that higher targets of 1.2 to 1.6 g/kg/day have been proposed during active weight loss.1 It also gives a simpler option: an absolute target of 80 to 120 g a day, about 16% to 24% of calories on a 2,000-calorie diet.1

The advisory says it is unclear whether these targets should use actual, adjusted or ideal body weight for people with obesity, because actual weight can overestimate needs.1 It adds that intake should not fall below 0.4 to 0.5 g/kg/day, and that prolonged intake at or above 2 g/kg/day should be avoided.1

Reduced appetite can make protein hard to reach. The advisory suggests eating protein-rich foods first in a meal, and pairing enough protein with structured strength training to help preserve muscle and bone.1 Our guide to GLP-1 muscle and bone loss covers the evidence.

The advisory's advice for nausea is smaller, more frequent meals, avoiding fatty or high-fiber foods in the first few days, and drinking enough fluid.1 It notes that nausea often appears in the morning or after long stretches without food, and that some people fall into a cycle where not eating makes nausea worse.1

Its specific suggestions are to eat a small breakfast, then small meals every 3 to 4 hours with adequate fluids.1 Ginger or peppermint tea and acupressure bands may help.1 Anti-nausea medicine from a prescriber can also help during dose increases.1

Timing matters too. The Zepbound label says most nausea, vomiting and diarrhea happened during dose escalation and decreased over time.2 On Wegovy injection, 44% of adults in the weight-loss trials reported nausea, against 16% on placebo, most often during dose escalation.3 See what to expect in the first weeks on a GLP-1 for the week-by-week picture.

When hunger and interest in food are low, the advisory suggests small, frequent meals and foods that are easier to face, such as smoothies or protein drinks made with fruit, vegetables and unsweetened milk or yogurt, cottage cheese and soups.1 It notes these are often more appealing than heavier foods such as red meat, cold cuts or hard cheese.1 If that is not enough, setting an alarm or reminder to eat can help.1

The advisory warns that long gaps without eating can lead to inadequate nutrient intake, or to rebound cravings for sugars and refined carbohydrates once a person becomes overly hungry.1 The quieter appetite behind this is often described as reduced food noise.

The labels warn that dehydration from nausea, vomiting or diarrhea can lead to acute kidney injury, so fluid intake matters on these drugs.2,3 The Zepbound label advises patients to take precautions to avoid fluid depletion.2

Constipation was reported in 11% to 17% of people on Zepbound in the weight-loss trials, depending on dose.2 The advisory recommends adequate fluids and fiber from food, with a gradual increase in fiber from foods such as prunes or other dried fruit.1 It notes that other measures, such as magnesium or other laxatives, are sometimes needed and should be discussed with a clinician.1

The Zepbound and Wegovy labels say to use the drug with a reduced-calorie diet but do not set a calorie number.2,3 The advisory recommends tailoring nutrition goals to each person and having a registered dietitian help set a dietary pattern.1 It also says dietary advice should be adjusted for the rate of weight loss, nutrient status, tolerance and response to treatment.1

Is there a best diet on Zepbound? No single named diet is recommended. The advisory favors a minimally processed, nutrient-dense pattern and says diets such as low-carbohydrate approaches can work for some people if they stay nutritionally adequate.1

What should I eat on GLP-1 injection day? The Zepbound and Wegovy injection labels say the dose can be taken with or without meals, and give no separate injection-day diet.2,3

What not to eat on Ozempic? The Ozempic label lists no forbidden foods.4 The advisory's list to minimize applies: refined carbohydrates, sugary drinks, red and processed meats, most fast food and large meals.1

Do I need to take vitamins on a GLP-1? Not routinely, but the advisory says supplements such as vitamin D, calcium, B12 or a multivitamin can be considered for nutrients at risk.1

Does eating fatty food make GLP-1 side effects worse? The advisory says avoiding fatty foods early in treatment can ease nausea, and avoiding large or high-fat meals can help with diarrhea.1

If you want a program that includes dietitian or clinician support alongside the prescription, compare options on our ranking of GLP-1 programs. To weigh the two leading drugs, see Wegovy vs Zepbound.

This article is for information only and is not medical or nutrition advice. GLP-1 medications are prescription drugs with real risks and side effects. Talk to a licensed clinician or registered dietitian before changing your diet or starting any treatment.