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How long does Ozempic last in your system?

Medically reviewed by Kristianne Hannemann, PharmD. Last updated on March 24, 2025.

Official answer

by Drugs.com

Ozempic (semaglutide) stays in your system for approximately five weeks after your last dose. This is due to its long half-life of about one week. The medication gradually wears off over time, and its effects diminish accordingly.

What Happens When You Stop Taking Ozempic?

Effects from taking Ozempic are not permanent, and its benefits on blood sugar control and weight loss will diminish over time. After discontinuation:

  • Blood sugar levels may rise, potentially requiring alternative diabetes management.
  • Weight gain is possible, with studies indicating that individuals may regain about two-thirds of the weight lost.
  • Appetite may increase, as digestion speeds up after the medication leaves your system.
  • Heart health benefits may be reduced, necessitating monitoring for cardiovascular risks.

Because Ozempic takes over a month to completely leave your system, you will see these changes gradually. Ozempic mimics a hormone in your body that controls your blood sugar and digestion. Once it is no longer present, your digestion will speed up and you might feel more hungry than when you were taking it. People typically see these changes in their appetite within a week.

If stopping Ozempic due to side effects, symptoms like nausea, vomiting, or diarrhea should improve within one to two months. If they persist, consult your healthcare provider.

Are There Withdrawal Symptoms from Stopping Ozempic?

Ozempic does not have officially recognized withdrawal symptoms. However, some individuals may experience:

  • Increased appetite, leading to potential weight gain.
  • Elevated blood sugar levels, which may cause symptoms such as increased thirst and frequent urination.

After stopping Ozempic, regular monitoring of blood sugar, blood pressure, and weight is essential. Always consult your healthcare provider when making changes to your medication regimen.

Can You Stop Ozempic Cold Turkey?

Whether you can stop Ozempic abruptly depends on your dosage, duration of use, and medical condition:

  • Gradual tapering may be recommended to allow your body to adjust.
  • Immediate discontinuation may be necessary in cases of serious side effects like pancreatitis or severe allergic reactions.

Work closely with your healthcare provider to safely stop taking Ozempic.

Related questions

Can You Flush Ozempic Out of Your System?

No, there is no way to expedite the removal of Ozempic from your system. The medication is naturally processed and eliminated through urine and stool over several weeks.

If you suspect an Ozempic overdose, seek medical attention immediately. Symptoms may include:

  • Severe low blood sugar (hypoglycemia)
  • Nausea and diarrhea
  • Increased heart rate and mood changes

Supportive care and close monitoring may be required for several weeks due to Ozempic’s long duration in the body.

How Long Should I Stop Ozempic Before Surgery?

For patients at risk of pulmonary aspiration undergoing anesthesia or heavy sedation, the American Society of Anesthesiologists recommends stopping Ozempic one week before surgery.

This precaution helps prevent stomach contents from entering the lungs during anesthesia. Your healthcare provider will provide personalized guidance on when to stop and resume Ozempic around your procedure.

Do I Need to Stop Ozempic If I Get Pregnant?

There is limited data on Ozempic’s safety during pregnancy. However, animal studies have indicated potential risks, including birth defects. The Ozempic product label advises stopping the medication at least two months before a planned pregnancy to ensure it is fully cleared from your system.

If you become pregnant while taking Ozempic, discuss the risks and benefits with your healthcare provider. If discontinuing Ozempic for diabetes, an alternative treatment plan should be established to maintain blood sugar control and reduce pregnancy-related complications.

This is not all the information you need to know about Ozempic (semaglutide) for safe and effective use and does not take the place of your doctor’s directions. Review the full product information and discuss this information and any questions you have with your doctor or other health care provider

References

American Diabetes Association. n.d. Hyperglycemia (High Blood Glucose). Accessed 11/21/2024 at https://diabetes.org/living-with-diabetes/treatment-care/hyperglycemia

American Gastroenterological Association. 2024. Multisociety Clinical Practice Guidance for the Safe Use of Glucagon-like Peptide-1 Receptor Agonists in the Perioperative Period. Accessed 12/04/2024 at https://www.cghjournal.org/article/S1542-3565(24)00910-8/fulltext

Amirshahi, M., et. al. 2023. What is Ozempic? Accessed 11/20/2024 at https://www.poison.org/articles/can-ozempic-help-me-lose-weight

Anderson, L.A. 2023. What happens when you stop taking Ozempic? Accessed 11/21/2024 at https://www.drugs.com/medical-answers/what-happens-when-you-stop-taking-ozempic-3575107/

International Association for Physicians in Aesthetic Medicine. n.d. What Happens if You Take Too Much Ozempic®? Accessed 11/20/2024 at https://iapam.com/medical-weight-management-library/what-happens-if-you-take-too-much-ozempic

Joshi, G. P. 2023. Drugs for Diabetes or Weight Loss. Accessed 11/21/2024 at https://madeforthismoment.asahq.org/preparing-for-surgery/risks/drugs-diabetes-weight-loss/

National Library of Medicine. 2023. Semaglutide. In: Mother To Baby | Fact Sheets [Internet]. Accessed 11/21/2024 at https://www.ncbi.nlm.nih.gov/books/NBK600385/

Ozempic [package insert]. Updated November 2024. Novo Nordisk. Accessed 11/20/2024 at https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=adec4fd2-6858-4c99-91d4-531f5f2a2d79

Wilding, J. P. H., et. al. 2022. Weight regain and cardiometabolic effects after withdrawal of semaglutide: The STEP 1 trial extension. In: Diabetes, Obesity, and Metabolism. DOI:  https://doi.org/10.1111/dom.14725

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Your blood glucose (sugar) levels should start to fully decline within the first week after you start using Ozempic (semaglutide) at your regular dose. However, the full effect can take 8 weeks or longer, as this is a long-acting medication that is injected only once per week. Continue reading

Wegovy vs Ozempic: Which is Right for You?

Both Wegovy and Ozempic contain semaglutide, but Wegovy is prescribed for long-term weight management while Ozempic is used to control blood sugar levels in type 2 diabetes and help protect kidney function. They both lower the risk for heart-related complications, but they differ in other approved uses, doses, target populations and costs. Continue reading

What are the long-term side effects of Ozempic?

Ozempic has the potential to cause certain long-term problems that may last months or years after stopping it. Some examples of long-term side effects you may experience from Ozempic include pancreatitis, vision problems, acute kidney injury, and acute gallbladder disease. Continue reading

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