GLP-1 Side Effects: What to Eat and Drink for Each One (Symptom-by-Symptom Guide)

Short answer: for most digestive symptoms on a GLP-1 medication, the guidance points the same way: small, low-fat meals at regular times, fluids sipped through the day, and fewer large, greasy or very rich meals and less alcohol.^[1] The details change by symptom. Constipation calls for fiber from food added slowly with plenty of fluid, diarrhea for water and electrolyte drinks, and reflux for earlier, smaller dinners.^[2][3][4] Severe stomach pain that will not go away, or nausea, vomiting or diarrhea that does not stop, is a reason to call your prescriber right away.^[5][6]

This page is one table and thirteen short sections: each common symptom, how often it was reported on the Wegovy and Zepbound labels against placebo, what the guidance suggests eating and drinking, what to limit, and when to call. It is the quick reference. The everyday eating plan underneath all of it is in what to eat when you're eating less, and each symptom below links to the page that covers it in depth.

General information, not medical advice. Food does not change what a medication does, and no food or supplement on this page treats or prevents any symptom. These are the steps that the guidance and the labels set out. Anything about your own dose or symptoms is for your prescriber, and a registered dietitian can fit the food side to you.

GLP-1 side effects and what to eat: the master table

Rates are from the main adverse-reaction table of each obesity label: Wegovy 2.4 mg injection (2,116 adults, up to 68 weeks) and Zepbound 5, 10 and 15 mg (2,519 adults, up to 72 weeks), each against its own placebo group.^[6][5] "Call if" is taken from the labels' Medication Guides unless another source is cited.

Symptom	How common on the labels (drug vs placebo)	What the guidance suggests eating and drinking	What to limit	Call your prescriber if
Queasy stomach (nausea)	Zepbound 25% to 29% vs 8%; Wegovy 44% vs 16%[5][6]	A small breakfast, then something small every 3 to 4 hours with fluids; ginger or peppermint tea[1]; bland foods such as toast, crackers or rice[7]	Long gaps without food; fatty and high-fiber foods for the first few days after starting or a dose increase; alcohol[1]	It does not go away; or severe stomach pain that will not go away, sometimes felt in the back (possible pancreatitis)[5]
Vomiting	Zepbound 8% to 13% vs 2%; Wegovy 24% vs 6%[5][6]	Fluids first, in sips; small portions once they stay down[5][1]	Large meals, which make vomiting more likely[1]	It does not go away, or you cannot keep fluids down (risk of dehydration and kidney problems)[5]
Diarrhea	Zepbound 19% to 23% vs 8%; Wegovy 30% vs 16%[5][6]	Water plus drinks with electrolytes, such as broth; oral rehydration solutions (ask first if you have diabetes or kidney disease); your usual food once appetite returns[3]	Large or high-fat meals[1]; alcohol, caffeine, sugary drinks and juices, sugar alcohols, fried food, lactose[8]	It does not go away[5]; it lasts more than 2 days, six or more loose stools a day, black or bloody stools, high fever[9]
Constipation	Zepbound 11% to 17% vs 5%; Wegovy 24% vs 11%[5][6]	Fluids and fiber from food, raised gradually: prunes or other dried fruit[1], oatmeal, lentils and beans, berries, pears, apples with the skin, carrots, broccoli; water and clear soups[2]	Foods with little fiber: chips, fast food, processed meals[2]; for a while, very high-fat or high-protein meals if they make it worse[1]	Stomach problems that are severe or will not go away[5]
Reflux or heartburn	Reflux: Zepbound 4% to 5% vs 2%, Wegovy 5% vs 3%. Indigestion: Zepbound 9% to 10% vs 4%, Wegovy 9% vs 3%[5][6]	Smaller, lower-fat meals; the last meal at least 3 hours before lying down[4]	Alcohol[1]; high-fat and spicy foods, chocolate, coffee, mint, citrus and tomatoes, if they trigger it[4]	Stomach problems that are severe or will not go away; trouble swallowing or hoarseness[5]
Burping, gas or bloating	Burping: Zepbound 4% to 5% vs 1%, Wegovy 7% vs under 1%. Bloating: Zepbound 3% to 4% vs 2%, Wegovy 7% vs 5%[5][6]	Smaller, more frequent meals, eaten slowly and sitting down[10]	Fizzy drinks, straws, gum and hard candy; sweeteners ending in "-ol"; high-fat foods; a sudden jump in fiber[10]	Pain in the upper stomach with fever, yellow skin or eyes, or clay-colored stools (possible gallbladder problem)[5]
Full after a few bites	Not a separate line on either label; both say the drug delays gastric emptying[5][6]	Small, frequent meals with protein first; foods that flow easily and hold more water, such as soups and smoothies[1]	Large meals; heavy, fatty meals that slow the stomach further[1]	Vomiting or stomach problems that are severe or will not go away[5]
No appetite	Decreased appetite: 5% to 11% vs 1% on Mounjaro, the same molecule as Zepbound, in type 2 diabetes trials[11]	Eat by the clock, with an alarm if needed; smoothies or protein drinks, cottage cheese, soups[1]	Long stretches without eating, which can end in a rebound toward sweets and refined carbohydrates[1]	You cannot eat or drink enough most days: ask for a review of intake and hydration[1]
Tiredness	Zepbound 5% to 7% vs 3%; Wegovy 11% vs 5%[5][6]	Regular small meals with enough protein and fluid; foods rich in the advisory's nutrients of concern, such as iron, B12 and vitamin D[1]	Long gaps without meals[1]	Tiredness beyond what you would expect (a possible sign of a nutrient deficiency)[1]; shakiness, sweating or confusion if you take insulin or a sulfonylurea (low blood sugar)[5]
Dizzy on standing	Dizziness: Zepbound 4% to 5% vs 2%, Wegovy 8% vs 4%. Low blood pressure: Zepbound 1.6% vs 0.1%, Wegovy 1.3% vs 0.4%[5][6]	More fluids; getting up slowly after sitting or lying down[12]	Alcohol[12]	You faint, or have dizziness with chest pain or an irregular heartbeat[12]; it is more common with blood pressure medicines, so tell your prescriber[5]
Hair shedding	Zepbound 4% to 5% vs 1%; Wegovy 3% vs 1%; both labels tie it to weight reduction[5][6]	Protein as a priority; enough iron and zinc from food[1]	Very small intakes: below about 1,200 kcal a day for women and 1,800 for men, getting enough vitamins and minerals is hard[1]	Shedding is heavy, or goes on past the 6 to 9 months in which hair usually regains its fullness[13]; the advisory counts excessive hair loss among signs of a nutrient deficiency[1]
Food aversion or changed taste	Changed taste: Wegovy 1.7% vs 0.5%, Zepbound 0.4% vs 0%[6][5]; aversions are reported mostly when starting and after dose increases[1]	Flexibility: whatever protein you can face, such as yogurt, eggs, fish, beans or lentils; smoothies, cottage cheese and soups[1]	Forcing heavier foods, such as red meat, cold cuts or hard cheese, if they put you off[1]	You cannot get enough food in: a registered dietitian can rebuild the plan[1]
Signs of dehydration	Kidney injury: Zepbound 0.5% vs 0.2% in trials; reported after approval mostly after fluid loss from the gut[5]	Fluids on a schedule; water plus broth or other electrolyte drinks; oral rehydration solutions when fluid is being lost[5][3]	Alcohol and caffeine while fluid is being lost[8]	Extreme thirst, peeing less, dark urine, feeling dizzy or lightheaded[9]; nausea, vomiting or diarrhea that does not go away[5]

Sources: Wegovy prescribing information, section 6.1, Table 3; Zepbound prescribing information, section 6.1, Table 1; Mounjaro prescribing information, section 6.1, Table 1; the 2025 joint advisory on nutrition with GLP-1 therapy; NIDDK; MedlinePlus; the American Academy of Dermatology. The labels warn that rates from one drug's trials cannot be compared directly with another's, so read the two columns as separate trials, not a ranking.^[6] Wegovy now also has a 7.2 mg dose with its own table, and Mounjaro, the same molecule as Zepbound for type 2 diabetes, reports lower rates from different trials.^[6][11]

How common are GLP-1 side effects, and do they last?

Digestive symptoms are the most common by far. The joint advisory gives these ranges across the semaglutide and tirzepatide obesity trials: nausea 25% to 44%, diarrhea 19% to 30%, vomiting 8% to 24%, constipation 17% to 24% and abdominal pain 9% to 20%.^[1] It adds that they are more likely in the first weeks and with each dose increase, and tend to become less frequent and less severe on a stable dose.^[1] The Zepbound label says the same in its own words: most nausea, vomiting and diarrhea happened during dose escalation and decreased over time.^[5]

Most people kept going. On Wegovy 2.4 mg, 6.8% stopped because of an adverse reaction, against 3.2% on placebo; on Zepbound it was 4.8% to 6.7% by dose, against 3.4%, mostly in the first few months.^[6][5]

What should you eat for each GLP-1 side effect?

What to eat when nauseous on a GLP-1

The advisory notes that nausea often comes in the morning or after a long gap without food, and that skipping meals can turn into a cycle that makes it worse.^[1] Its suggestion is a small breakfast, then something small every 3 to 4 hours with fluids, and ginger or peppermint tea.^[1] Lilly's patient page adds splitting three meals into four or more, stopping when full, and bland foods such as toast, crackers or rice.^[7] Sample small-meal days are in what to eat on queasy days.

What to eat and drink after vomiting

Fluid comes first. The Medication Guides warn that vomiting can lead to dehydration and kidney problems, and say that drinking fluids lowers that chance.^[5] Vomiting is more likely after large meals, so the advisory's small-portion advice applies with extra force once food stays down.^[1] Vomiting that does not stop is a call to your prescriber, not something to manage at home.^[5]

What to eat with diarrhea on a GLP-1

NIDDK's advice is to replace fluid and electrolytes: water, broths, sports drinks or an oral rehydration solution, checking with your doctor first if you have diabetes or kidney disease.^[3] It lists what can make diarrhea worse: alcohol, caffeine, drinks and foods high in simple sugars, sugar alcohols, high-fat food and lactose.^[8] The advisory adds avoiding large or high-fat meals.^[1] How much to drink, and when a plain glass of water is not enough, is in GLP-1 dehydration.

What to eat for constipation on a GLP-1

The advisory says constipation should be managed early, with adequate fluids and fiber from foods, raised gradually; it names prunes and other dried fruit.^[1] NIDDK's list of fiber sources runs from oatmeal and lentils to berries, pears and broccoli, with water and clear soups alongside.^[2] When food is not enough, the choice of laxative is a question for your prescriber or pharmacist; among the options, the AGA-ACG guideline gives polyethylene glycol a strong recommendation.^[14] The full picture, including the warning signs, is in GLP-1 constipation.

What to eat for heartburn and reflux

Smaller, lower-fat meals, and the last one well before bed: NIDDK says at least 3 hours before lying down, and the American College of Gastroenterology guideline suggests avoiding meals 2 to 3 hours before bedtime.^[4][15] NIDDK's common triggers are high-fat and spicy foods, alcohol, chocolate, coffee, mint, citrus and tomatoes.^[4] One catch: peppermint tea is on the advisory's list for an unsettled stomach, but mint is also a common reflux trigger, so if heartburn is the problem, ginger is the safer of the two.^[1][4]

What helps burping and bloating on a GLP-1

The labels count burping and bloating among the reactions more common on the drug than on placebo.^[6][5] NIDDK's habits for gas: eat slowly and sitting down, choose smaller, more frequent meals, and cut back on fizzy drinks, straws, gum and hard candy, which all add swallowed air.^[10] It also names sweeteners ending in "-ol", such as sorbitol, xylitol and erythritol, and high-fat foods, which can increase bloating.^[10] Which foods tend to sit worst is in foods to avoid on a GLP-1.

What to eat when you feel full after a few bites

Both labels say these drugs delay gastric emptying, which the advisory links to bloating and fullness.^[6][1] It notes that foods that flow easily and hold more water tend to leave the stomach faster, while high-fat and high-protein foods slow it further.^[1] So keep meals small and frequent, put the protein first so it is not the part left on the plate, and lean on soups and smoothies when solid food will not fit.^[1]

What to eat on a GLP-1 when you have no appetite

The advisory warns that low interest in food can mean going hours without eating, which risks too few nutrients or a rebound toward sweets and refined carbohydrates.^[1] It suggests small, frequent meals; smoothies, protein drinks, cottage cheese and soups, which it says many people find more appealing than heavier foods; and an alarm or other reminder to eat.^[1] Lists of soft, small options are in what to eat on a GLP-1 when you're not hungry, and the protein calculator splits a daily target into small meals.

What to eat when a GLP-1 makes you tired

Fatigue appears on both labels, at 5% to 11% on the drug against 3% to 5% on placebo.^[5][6] Eating far less can be part of it: the advisory lists iron, calcium, magnesium, zinc and vitamins A, D, E, K, B1, B12 and C as nutrients of concern when intake falls, and calls fatigue beyond expected levels a sign of frank deficiency.^[1] Regular small meals with protein and fluid are the starting point. The other usual causes, and what to try in what order, are in why a GLP-1 makes you tired.

What to do about dizziness when you stand up

Dizziness and low blood pressure were both more common on the drugs than on placebo, and the labels link some of the low blood pressure to fluid loss and to blood pressure medicines taken at the same time.^[6][5] MedlinePlus lists drinking more fluids, getting up slowly and not drinking alcohol among the steps a provider may recommend.^[12] Fainting, or dizziness with chest pain or an irregular heartbeat, needs a call right away.^[12]

What to eat for hair shedding on a GLP-1

Both labels tie hair loss to weight reduction.^[5][6] The usual pattern, telogen effluvium, starts a few months after the trigger, and the American Academy of Dermatology says hair tends to regain its normal fullness within six to nine months.^[16][13] No food has been shown to stop it; the advisory's nutrition priorities on any GLP-1 put protein first and list iron and zinc among nutrients of concern.^[1] Rates by dose and sex are in does Zepbound cause hair loss.

What to eat when foods you liked now put you off

The advisory reports that some people develop food aversions, sometimes severe, mostly when starting and after dose increases, and that low appetite or aversion can make enough protein hard to reach.^[1] It encourages flexibility with food choices, and names beans, peas, lentils, dairy, seafood, eggs and lean poultry as protein sources to favor.^[1] If meat is the problem, swap rather than skip, and use the protein calculator to see what a day's target looks like in small portions.

What to drink for signs of dehydration

The labels warn that fluid lost through vomiting or diarrhea can lead to acute kidney injury, and the Medication Guides say drinking fluids lowers the chance of dehydration.^[6][5] NIDDK's signs are extreme thirst or a dry mouth, peeing less than usual, dark urine, feeling tired, dizzy or lightheaded, and sunken eyes or cheeks.^[9] Normally about a fifth of daily water comes from food, so eating less also means drinking less without noticing.^[17] The hydration calculator gives a starting daily target.

Which symptoms mean calling your prescriber right away?

The Wegovy and Zepbound Medication Guides list these.^[6][5]

• Severe pain in the stomach area that will not go away, with or without vomiting, sometimes felt through to the back. The Guides say to stop the medicine and call right away: it can be pancreatitis.
• Signs of a gallbladder problem: pain in the upper stomach, fever, yellowing of the skin or eyes, or clay-colored stools.
• Vomiting or diarrhea that does not go away, which can lead to dehydration and kidney problems.
• Stomach problems that are severe or will not go away. After approval, ileus, intestinal blockage and severe constipation have also been reported with tirzepatide.^[5]
• Signs of a serious allergic reaction: swelling of the face, lips, tongue or throat, trouble breathing or swallowing, fainting or feeling dizzy, a very rapid heartbeat. Get medical help right away.
• A lump or swelling in the neck, hoarseness, trouble swallowing or shortness of breath.
• Signs of low blood sugar if you also take insulin or a sulfonylurea: dizziness, sweating, shakiness, confusion, headache, a fast heartbeat.

The Guides also say to tell your healthcare provider about any reaction that bothers you or does not go away.^[5] Every reaction in the Zepbound label, by dose, with the serious warnings in full, is in Zepbound side effects.

How was this table built, and can you reuse it?

Every row has the same five parts. The rates come from the adverse-reaction tables of the current FDA labels, read on November 13, 2026: Wegovy revised June 2026 and Zepbound revised August 2026.^[6][5] The food columns quote the 2025 joint advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association and The Obesity Society, and the NIDDK and MedlinePlus pages for each condition, without adding anything they do not say.^[1] Where a symptom is not a line in a label table, the row says so instead of estimating.

The same table is available as a CSV file, one row per symptom with its sources, under a Creative Commons Attribution 4.0 license: reuse it with a credit and a link to this page. Download the CSV The everyday plan that sits under every row, protein, fluid and fiber on a small appetite, is laid out in the guide to what to eat when you're eating less, linked at the top of this page.

For transparency about why this page exists on our site: we make one product, Zornava Replenish, a lemon-lime daily hydration and nutrient powder for lighter appetite days, including for people on GLP-1 medications. It is a dietary supplement, not a medication, and it is not a treatment for anything in the table above. It is not on sale yet; early access opens February 9, 2027, and the early-access list is open now.