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Ozempic overdose: what happens if you take too much?

6 min read

Written by: 

Amelia Willson

Reviewed by: 

Beverly Tchang, MD, DABOM

 and 

Patricia Weiser, PharmD

Published: Jul 11, 2022

Updated:  Mar 13, 2025

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Reviewed By

Beverly Tchang, MD, DABOM

Beverly Tchang, MD, DABOM, is an Obesity Medicine Advisor for Ro and triple board-certified endocrinologist.

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Key takeaways

  • Ozempic overdose is possible and can lead to severe nausea, vomiting, abdominal pain, and, in rare cases, pancreatitis or intestinal blockage.

  • The risk of overdose is higher with compounded semaglutide due to the potential dosing errors that can occur when using vials and syringes.

  • If you take too much Ozempic, call the Poison Help line at 1-800-222-1222.

Here's what we'll cover

Here's what we'll cover

Key takeaways

  • Ozempic overdose is possible and can lead to severe nausea, vomiting, abdominal pain, and, in rare cases, pancreatitis or intestinal blockage.

  • The risk of overdose is higher with compounded semaglutide due to the potential dosing errors that can occur when using vials and syringes.

  • If you take too much Ozempic, call the Poison Help line at 1-800-222-1222.

While Ozempic (semaglutide) is typically self-administered using a prefilled injection pen, it is possible to accidentally give yourself a higher dose than prescribed. So what happens if you take too much Ozempic? Is it possible to experience an Ozempic overdose?

Read on as we explain what to do if you take too much Ozempic, what an Ozempic overdose can look like, and when to seek emergency medical attention.

Ozempic Important Safety Information: Read more about serious warnings and safety info.

Can you overdose on Ozempic?

Yes, it is possible to overdose on Ozempic. Meaning you can take a higher dose of Ozempic than you’ve been prescribed, and doing so can lead to side effects ranging in severity. 

An Ozempic overdose can cause significant nausea, diarrhea, vomiting, and gastrointestinal symptoms, says Supriya Rao, MD, DABOM, a quadruple board-certified physician specializing in obesity medicine and lifestyle medicine. “Usually, if you accidentally take two doses, you’ll feel a little sicker than normal, but from what I’ve seen with patients, they’re able to manage symptoms at home.”

That being said, pancreatitis is also possible. This “is an inflammation with severe abdominal pain that requires hospital admission where you can be given IV fluids,” Dr. Rao explains. “Rarely, you can get an intestinal blockage, or ileus, because the medication works by slowing down your digestion. Ileus is not a physical blockage but a functional one where the colon doesn’t work the way it should and acts as if there’s a blockage. There are also rare reports of seizures.”

Since 2019, America’s Poison Centers have seen a nearly 1,500% increase in calls related to overdose or side effects of injectable GLP-1 medications like Ozempic. Some of that increase may be explained by the increase in usage of these drugs: Between 2019 and 2020 alone, Ozempic usage increased by over 1,200%, according to one analysis by the American Pharmacists Association. Between 2020 and 2022, the number of people taking Ozempic nearly tripled. 

It’s important to note, though, that the risk of Ozempic overdose may be higher when taking compounded versions of the medication vs. that which is approved by the US Food and Drug Administration (FDA). “Ozempic overdoses are rare when you're taking the FDA-approved medication because it comes in a pen that’s very obvious to administer,” Dr. Rao says. “A lot of the overdoses are coming from compounded semaglutide because patients are given a vial and syringe and told to take a certain amount, but then they end up being off when drawing the medication.” 

In some cases, people have accidentally taken 10 times the recommended dose of compounded semaglutide. This often happens due to a lack of clear instructions on how to properly measure their dose with a syringe. Further complicating things is that different types of syringes or insulin syringes can be used with compounded semaglutide, causing confusion over the different unit markings (e.g. milliliters, units, milligrams) and which one applies to their prescribed dosage.

GLP-1 Important Safety Information: Read more about serious warnings and safety info.

What happens if you take too much Ozempic? 

According to the FDA and the American Pharmacists Association, symptoms of Ozempic overdose may include:

  • Severe nausea

  • Severe vomiting

  • Severe hypoglycemia (low blood sugar levels)

  • Abdominal pain

  • Fainting

  • Headache

  • Migraine

  • Dehydration

  • Weakness

  • Fatigue

  • Loss of appetite

  • Acute pancreatitis

  • Gallstones 

Some of these gastrointestinal symptoms, such as nausea and vomiting, can last for days, and some cases of Ozempic overdose require hospitalization. There, you might be given anti-nausea medication and/or intravenous (IV) fluids. Because semaglutide’s effects can last about one week, some people may need to stay in the hospital for treatment and observation for a while.

As Dr. Rao shares above, taking an extra dose of Ozempic may make you feel “sicker than normal,” but many patients are able to manage symptoms at home. “If they’re experiencing significant GI symptoms, I’ll send them to the ER to get fluids and be treated for those symptoms more acutely,” she adds.

What should you do if you take too much Ozempic or experience Ozempic overdose? 

If you take too much Ozempic, contact the Poison Help line at 1-800-222-1222. They can advise you on next steps based on your symptoms. You can also give your healthcare provider a call and “tell them your symptoms, especially if they’re getting progressively worse or not improving at all,” Dr. Rao says. 

“It’s one thing if you’re feeling sick or not so great,” she continues. “It’s another if you’re feeling extreme pain or like you’re going to pass out, you can’t stop vomiting or have severe abdominal pain, or you can’t pass stool or haven’t had a bowel movement in a few days.” Those are serious symptoms that warrant emergency medical attention, Dr. Rao explains.

The recommended Ozempic dosage depends on why you’re taking it. While commonly used off-label for weight loss, the FDA has approved Ozempic for the following uses, along with diet and exercise:

  • To control blood sugar levels in adults with type 2 diabetes

  • To lower the risk of serious health problems, such as heart attack, in adults with type 2 diabetes and heart disease

  • To lower the risk of worsening disease, complications. and death in adults with type 2 diabetes and chronic kidney disease

If you’re prescribed Ozempic, you will give yourself a weekly subcutaneous injection (under the skin of the upper arm, thigh, or stomach). Ozempic is available in prefilled pens, and compounded semaglutide comes in vials. The Ozempic pens contain multiple doses of the medication, and you’ll select your dose using the dial on the pen. With the semaglutide vials, you’ll draw your own dose using a separate needle and syringe.

Whether you’re taking Ozempic off-label for weight loss or to manage type 2 diabetes, kidney disease, or heart disease, your healthcare provider will likely start you on the lowest dose of 0.25 mg to get your body used to the medication. Then, over a period of weeks, they’ll slowly increase the dose until you reach a maintenance dosage that is effective for you while keeping side effects manageable. The maximum dose of Ozempic for type 2 diabetes is 2 mg; for those who also have heart or kidney disease, it’s 1 mg.

While everyone is different and dosing will be customized to your needs (e.g. additional blood sugar control), the typical Ozempic dosing schedule may look like this:

Remember: Your prescribed dose of Ozempic is the one that your healthcare provider has determined to be most effective and the safest for you. Taking more Ozempic will not make it work more effectively. It will, however, make you more likely to experience side effects, some of which could become potentially serious. Before you reach your maintenance dose, it’s important to be patient and follow the dosing schedule prescribed by your doctor. This is designed to help your body adjust to the medication and better cope with the side effects of Ozempic.

How to avoid taking too much Ozempic

To avoid taking too much Ozempic, you can make a few small tweaks to your dosing routine. These shouldn’t take too much time, and they can help ensure you inject Ozempic safely. 

When using an Ozempic pen, check that your pen shows the correct dose on the label. Then, select your dose by turning the dose selector until your dose appears in the dose counter. It should line up exactly with the tip of the triangle next to the letters “mg.”

When using a semaglutide vial, follow the instructions provided. Because you’ll need to use a separate needle and syringe, be aware that different types of syringes may be labeled with different measurements, including units, milliliters (mL), or milligrams (mg). If you have any questions about how to draw your dose of semaglutide or if the syringe markings seem confusing, ask your healthcare provider or pharmacist for clarification. 

“The safety and efficacy of these medications is as good as whoever is prescribing them and seeing you, and how good you are at adhering to the recommended lifestyle changes,” Dr. Rao says.“Being a good advocate for yourself and having an open dialogue with your physician is also important.”

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Can you overdose on other semaglutide drugs?

Yes, it is possible to overdose on other semaglutide drugs besides Ozempic, including Wegovy (a weekly injection) and Rybelsus (a daily oral tablet). Symptoms of semaglutide overdose may include severe nausea, vomiting, and hypoglycemia, and some cases may require hospitalization. If you take too much of Wegovy or Rybelsus, contact the Poison Help line at 1-800-222-1222 as well as your healthcare provider. 

Wegovy Important Safety Information: Read more about serious warnings and safety info.

Bottom line

While accidental overdoses are relatively rare with the prefilled Ozempic pens, errors can occur, especially when using the compounded versions that require you to measure your dose yourself. To stay safe, it’s essential to follow your prescribed dosage, know the signs of a possible Ozempic overdose, and seek medical help when necessary. Here’s a quick recap of what happens if you take too much Ozempic and other key points we covered above:

  • Taking more than your prescribed dose can lead to severe gastrointestinal distress or hypoglycemia, and, in rare cases, complications like pancreatitis or ileus.

  • The risk of overdose may be higher with compounded semaglutide due to confusion or a lack of proper instruction about how to accurately draw your dose using the vials and syringes.

  • Ozempic overdose symptoms, including severe nausea, vomiting, and abdominal pain, may persist for around a week due to the drug’s long half-life. 

  • Serious symptoms, such as extreme abdominal pain, persistent vomiting, or an inability to pass stool, may require hospitalization and should lead you to seek emergency medical attention. 

  • Always double-check your dose before injecting, and consult your healthcare provider if you’re unsure about your dosing instructions. If you take too much Ozempic, call the Poison Help line at 1-800-222-1222. 

Frequently asked questions (FAQs) 

DISCLAIMER

If you have any medical questions or concerns, please talk to your healthcare provider. The articles on Health Guide are underpinned by peer-reviewed research and information drawn from medical societies and governmental agencies. However, they are not a substitute for professional medical advice, diagnosis, or treatment.

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How we reviewed this article

Every article on Health Guide goes through rigorous fact-checking by our team of medical reviewers. Our reviewers are trained medical professionals who ensure each article contains the most up-to-date information, and that medical details have been correctly interpreted by the writer.

Editorial Guidelines | Medical Review Process

Current version

March 13, 2025

Written by

Amelia Willson

Fact checked by

Beverly Tchang, MD, DABOM and Patricia Weiser, PharmD

About the medical reviewers

Beverly Tchang, MD, DABOM

Beverly Tchang, MD, DABOM, is an Obesity Medicine Advisor for Ro. She is also an assistant professor of Clinical Medicine at Weill Cornell Medicine in New York and triple board-certified in Internal Medicine, Endocrinology, and Obesity Medicine.

Patricia Weiser, PharmD

Patricia Weiser, PharmD, is a licensed pharmacist, health content writer, and medical reviewer with more than a decade of clinical experience in community and hospital pharmacy.

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