GLP-1 Side Effects: What Helps and When to Call

The most common GLP-1 side effects are nausea, diarrhea, constipation, vomiting and stomach discomfort, usually strongest when you start or increase a dose. Smaller meals, eating slowly and staying hydrated help most people. Call your provider if symptoms persist or keep you from eating or drinking, and get urgent care for severe stomach pain or signs of an allergic reaction.

At Padgett Medical Center in Tampa, personalized compounded semaglutide starts at $149 a month and personalized compounded tirzepatide at $229 a month at the starting dose. Book online with a card on file and take 15% off your first month of medication, and your $100 visit is free when you start medication. Nothing is charged when you book. See every dose and price.

Why do GLP-1 medications cause stomach side effects?

GLP-1 medications slow how quickly your stomach empties, which is part of how they keep you full. That same slowing can cause nausea, bloating and changes in bowel habits, especially while your body adjusts.

The semaglutide and tirzepatide drug information list these as the most common effects. They're usually most noticeable in the first weeks and after a dose increase, which is why your provider raises your dose gradually.

What helps with nausea?

Eat smaller meals, eat slowly and stop as soon as you feel full. Greasy, fried and very rich foods make nausea worse for many people.

A multidisciplinary expert consensus on GLP-1 digestive side effects recommends these eating changes. Don't force yourself to finish a plate: feeling full sooner is the medication doing its job. If nausea keeps you from eating enough, tell your provider.

What helps with constipation?

Drink enough fluids, add fiber gradually through vegetables, fruit and whole grains, and stay active. Ask your provider before starting a laxative or fiber supplement.

The expert consensus lists fluids, fiber and physical activity as first steps. Add fiber slowly, since a sudden jump can cause bloating. If constipation lasts, or comes with severe pain or a swollen belly, contact your provider instead of waiting.

What should you do about vomiting or diarrhea?

Sip fluids often and eat bland food in small amounts. If you can't keep fluids down, or vomiting or diarrhea keeps going, contact your provider promptly, because losing fluids can lead to dehydration.

Dehydration can strain the kidneys, a risk noted in the prescribing information. Signs include dizziness, a very dry mouth, dark urine or urinating much less than usual. If you have a condition that limits how much you can drink, ask your provider what's right for you.

Which symptoms mean you should get help right away?

Get medical help right away for ongoing pain in the upper or middle of your stomach that may spread to your back, stomach pain with fever, yellowing of your skin or eyes, or signs of a serious allergic reaction such as trouble breathing or swelling of your face, mouth or throat.

The semaglutide and tirzepatide drug information list these as serious symptoms, and the prescribing information names pancreatitis and gallbladder disease among the risks. Don't wait for your next scheduled visit, and call 911 in an emergency.

Should you change your dose if side effects are hard?

No. Don't skip, split or change doses on your own. Call your provider, who can decide whether to keep you at your current dose longer or adjust your plan.

Side effects often ease once your body adjusts to a dose, which is why doses go up gradually. If they don't, your provider has options. Keep your medication and its instructions handy when you call, so you can say exactly what dose you take and when you last took it.

What should you tell your provider when you call?

Say what the symptom is, when it started, how bad it is and whether you can eat and drink normally. Add your current dose, when you last took it and any new medications or supplements.

A short note on your phone is enough. It helps your provider decide quickly whether you need to be seen, whether to adjust your plan or whether it's something to watch. For background on how these medications work, read GLP-1 weight-loss medications: how they work.

How does Padgett support you through side effects?

Your dose is set and adjusted by your provider, Morgan Colee, PA, at follow-up visits in person in Tampa or by telehealth in Florida. Side effects are part of every follow-up conversation, so you're not managing them alone.

Starting low and increasing gradually is how Padgett keeps side effects manageable for most people. If you're considering treatment, see personalized compounded semaglutide and personalized compounded tirzepatide, or book your visit.

Personalized compounded semaglutide and personalized compounded tirzepatide are compounded drugs that have not been approved by the FDA. They have not been reviewed by the FDA for safety, effectiveness, or quality. FDA-approved products containing semaglutide and tirzepatide are available. Individual results vary.

This article is educational and is not medical advice. Talk with a licensed provider about your own health, medications and treatment options.