# Ozempic Overdose: Symptoms, What to Do, How Long It Lasts

Source: https://www.dietglp.com/blog/ozempic-overdose/
Published: 2026-11-06
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**TL;DR:** Yes, you can overdose on Ozempic, and it is most often an accident. The main symptoms are severe nausea and vomiting, and the labels also warn about low blood sugar in some cases. If you took too much, call Poison Help at 1-800-222-1222 or your prescriber, or go to the ER, right away, because semaglutide stays in your body for weeks. Once your care team says you are eating normally again, [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) can help you get back to a daily protein target and short workouts.

Can you overdose on Ozempic, and what should you do if you took too much? **Yes, you can. If you took too much Ozempic (semaglutide), call Poison Help at 1-800-222-1222 or your prescriber, or go to the nearest ER, right away. Do this even if you feel fine, because symptoms can start hours later.** The same advice appears on the labels for Zepbound and Foundayo. Poison Help is free and open 24 hours a day.

This guide does not replace that call. It explains what the symptoms look like, how long they may last, and how these mistakes happen.

## Why Ozempic overdose is in the news

Calls are climbing. The Washington Poison Center logged 543 GLP-1 calls from January through September 2026, double the 272 calls from the same months in 2025, KIRO 7 reported this week. KING 5 reported 224 calls in all of 2024 and 421 in 2025. By November 5, 2026, the count had already reached 665.

The center's own article gives national poison center counts of about 2,500 in 2022, 4,700 in 2023, 8,500 in 2024 and 10,745 through September 2025. Counts vary by source and method. A national study in the *Journal of Medical Toxicology* found 10,033 GLP-1 exposures from 2012 through 2023. Most were unintentional dosing errors with mild stomach symptoms. But the share of people managed in or sent to a health care facility rose from 23.0% to 33.5% after semaglutide was approved for weight loss in 2021.

## Ozempic overdose symptoms

Here is what the labels, the FDA and poison center experts describe. Your poison specialist or doctor will tell you what applies to you.

| Symptom | Where it comes from | Why it matters |
|---|---|---|
| Severe nausea and vomiting | Wegovy label; Washington Poison Center | The most common problem |
| Cannot keep liquids down | Washington Poison Center | Can lead to dehydration, which the center calls the major issue |
| Thirst, dry mouth, dark urine, less urine, dizziness | MedlinePlus (signs of dehydration) | Ozempic label warns dehydration can lead to kidney problems |
| Shakiness, sweating, confusion, fast heartbeat, blurred vision, slurred speech | Ozempic label (signs of low blood sugar) | Wegovy label lists severe low blood sugar with GLP-1 overdoses |
| Severe stomach pain that will not go away, sometimes reaching the back | Ozempic label (pancreatitis warning) | The label says to stop the drug and call your provider right away |
| Upper stomach pain, fever, yellow skin or eyes | Ozempic label (gallbladder warning) | Tell your provider right away |
| Fainting, headache or migraine | FDA reports on compounded semaglutide errors | Some people needed hospital care |

Low blood sugar deserves extra care if you also take insulin or a sulfonylurea, since the label warns these raise the risk. One poison center reported low blood sugar in 3.4% of its GLP-1 exposures.

Timing can fool you. Dr. Jimmy Leonard of the Washington Poison Center told KING 5 that some people do not notice a problem until 12 to 14 hours after the shot. Feeling okay at hour one does not mean you are in the clear.

## What to do if you take too much Ozempic

1. **Call right away.** Dial 1-800-222-1222, call your prescriber or go to the nearest ER. These are the label's options.
2. **Call 911** if someone has passed out, has trouble breathing or cannot be woken up.
3. **Have the facts ready.** Know the drug name and strength, how much you took and when, your usual dose, and any other medicines, mainly insulin or sulfonylureas. Keep the pen, vial and syringe nearby.
4. **Say so if you cannot keep fluids down.** The Washington Poison Center says people who can still sip fluids may be able to manage at home, but those who cannot may need nausea medicine or IV fluids at a hospital. Let the specialist make that call.
5. **Ask before your next dose.** Your prescriber should tell you when, or whether, to take it. Do not decide this alone.

If a child or anyone without a prescription took the drug, or if you are pregnant, tell the specialist right away.

The label names no antidote. It calls for supportive treatment, which means treating symptoms while the drug clears. For milder stomach trouble after a normal dose, our guide to [managing nausea on Ozempic](/blog/managing-nausea-on-ozempic/) can help.

## How long does an Ozempic overdose last?

No study gives a clean timeline, so be wary of anyone who promises one. What the labels do give is how slowly each drug leaves the body.

| Drug | Half-life per the label | What the overdose section says |
|---|---|---|
| Ozempic, Wegovy (semaglutide shots) | About 1 week; Ozempic stays in the blood about 5 weeks after the last dose | A "prolonged period" of observation and treatment may be needed |
| Zepbound, Mounjaro (tirzepatide) | About 5 days | A period of observation and treatment may be needed |
| Foundayo (orforglipron pill) | About 29 to 49 hours | A period of observation and treatment may be needed |

The half-life tells you how long the drug is around, not how long you will feel sick. The Washington Poison Center adds that it is unknown whether a one-time overdose has long-term effects. Its reports on retatrutide, an unapproved drug sold online, describe vomiting and trouble keeping down food or liquids for 1 to 3 days.

## How do people accidentally overdose on GLP-1s?

These are the mistakes the FDA and poison center experts keep seeing. The national study authors say better counseling and clearer poison center guidance may help.

| Mistake | Real example | Source |
|---|---|---|
| Mixing up units and milligrams | Told to draw 5 units on a U-100 syringe, patients gave 50 units | FDA |
| Prescriber math errors | 25 units prescribed when 5 units (0.25 mg) was intended | FDA |
| Wrong starting dose | 2.5 mg taken instead of 0.25 mg | Dr. Leonard, KIRO 7 |
| Double dosing | Forgetting the weekly shot was already taken | Dr. Leonard, KING 5 |
| Wrong schedule | Injecting once a day instead of once a week | Washington Poison Center |
| Skipping dose steps | Starting at the full dose | Washington Poison Center |
| Sharing medicine | Giving some to another person | Dr. Leonard, KIRO 7 |

Vials are the big theme. The FDA says compounded semaglutide errors reached 5 to 20 times the intended dose. The Washington Poison Center says about half of its GLP-1 calls involve compounded semaglutide and tirzepatide. A "unit" on a syringe is not a set number of milligrams. It depends on how strong the liquid is, so the same mark can mean a different dose from one vial to the next. Our [compounded GLP-1 guide](/blog/compounded-glp1/) explains what these products are and why the FDA does not approve them. Brand-name vials have their own steps too, which we cover in our [Zepbound vials guide](/blog/zepbound-vials/).

Gray-market products add a separate risk. Dr. Leonard told KIRO 7 that some retatrutide sold online may be contaminated with other products, and buyers cannot know what they are injecting. See [is retatrutide legal](/blog/is-retatrutide-legal/) for where that drug stands.

## How to avoid taking too much

- Use the dose your prescriber gave you, exactly as written. Ozempic and Wegovy shots are once a week.
- Before your first shot and after any dose change, ask your pharmacist to show you the dose and confirm it in milligrams.
- If you use a vial, ask what your dose is in milligrams and in milliliters, and how it maps to your syringe. If the numbers do not make sense, stop and ask.
- Write down every dose on a paper or phone calendar right after you take it.
- Never share your medicine, and keep it away from children.
- Read the Instructions for Use that come with your medicine.

## Getting back on track after a rough week

A few days of vomiting can leave you eating very little. After your care team says you are recovered and cleared to eat normally, the goal is to rebuild steady habits, not make up for lost time. [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) gives you one protein target, one 20-minute workout and one Shape Score each day, so there is only one simple plan to follow. Sharpy is not a medical tool and cannot help during an overdose, so make the call first.

Most GLP-1 errors come down to a number that was misread on one day, so slow down at each dose change. And once things calm down, [Sharpy](https://apps.apple.com/us/app/glp-diet-app-sharpy/id6762084138) can help you protect muscle while the medicine does its work.

## Sources

- [FDA: Dosing errors with compounded injectable semaglutide products](https://www.fda.gov/drugs/human-drug-compounding/fda-alerts-health-care-providers-compounders-and-patients-dosing-errors-associated-compounded)
- [Ozempic prescribing information and patient information, rev. July 2026](https://www.novo-pi.com/ozempic.pdf)
- [Wegovy prescribing information, rev. June 2026 (DailyMed)](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b)
- [Zepbound prescribing information, rev. August 2026](https://pi.lilly.com/us/zepbound-uspi.pdf)
- [Mounjaro prescribing information, rev. July 2026](https://pi.lilly.com/us/mounjaro-uspi.pdf)
- [Foundayo prescribing information, rev. July 2026](https://pi.lilly.com/us/foundayo-uspi.pdf)
- [Miller et al., J Med Toxicol 2026: National poison center trends in GLP-1 exposures](https://pubmed.ncbi.nlm.nih.gov/41634285/)
- [Washington Poison Center: GLP-1 exposures on the rise](https://www.wapc.org/insights/glp-1s/)
- [KIRO 7: GLP-1 poison calls double in Washington](https://www.kiro7.com/news/local/glp-1-poison-calls-double-washington-weight-loss-drugs-surge-popularity/HN54B6SKP5CN3JRKLLP3OKFBIQ/)
- [KING 5: Calls about weight-loss drugs have nearly tripled](https://www.king5.com/article/news/health/calls-about-weight-loss-drugs-have-nearly-tripled-at-washington-poison-center/281-7c987d7c-0da5-4fc4-bae2-59cb2a1619c3)
- [MedlinePlus: Dehydration](https://medlineplus.gov/dehydration.html)


## Frequently asked questions

**Q: Can you overdose on Ozempic?**

A: Yes. The Ozempic label tells people who take too much to call their healthcare provider or Poison Help at 1-800-222-1222, or go to the nearest ER right away. A national study found that most GLP-1 cases reported to poison centers were unintentional dosing errors.

**Q: What happens if you take too much Ozempic?**

A: The most common problems are severe nausea and vomiting, along with trouble keeping food or liquids down. The Wegovy label, which has the same drug, also lists severe low blood sugar. FDA reports of compounded semaglutide errors include fainting, headache, dehydration, acute pancreatitis and gallstones. Some people needed hospital care.

**Q: What should I do if I took too much Ozempic?**

A: Call Poison Help at 1-800-222-1222, or your prescriber, or go to the nearest ER right away, even if you feel fine. Symptoms can take hours to start. Call 911 if someone has passed out, has trouble breathing or cannot be woken up.

**Q: How long does a semaglutide overdose last?**

A: There is no set timeline. Semaglutide has a half-life of about 1 week and stays in the blood for about 5 weeks after the last dose, so the labels warn that a long period of observation and treatment may be needed. Ask your care team what to expect in your case.

**Q: Is there an antidote for an Ozempic overdose?**

A: The label does not name one. It calls for supportive treatment, which means treating the symptoms. The Washington Poison Center says that means treating nausea, vomiting and dehydration, and some people need IV fluids.

**Q: Can you overdose on Ozempic accidentally?**

A: Yes, and that is the usual story. Common mistakes include skipping the slow dose increases, injecting more often than once a week, forgetting a dose was already taken, and mixing up units, milliliters and milligrams on compounded vials.