Ozempic is a prescription injection medication that contains semaglutide, a type of glucagon-like peptide-1 (GLP-1) receptor agonist that acts like your body’s natural GLP-1 hormone.
As the GLP-1 hormone does, Ozempic helps regulate blood sugar levels by increasing insulin and decreasing glucagon. Ozempic also suppresses your appetite and slows the speed of stomach emptying, which increases feelings of fullness after eating.
The Food and Drug Administration (FDA) has approved Ozempic to help manage type 2 diabetes in adults alongside diet changes and exercise.
It’s also approved to reduce the risk of heart attack, stroke, or heart-related death in people who have both type 2 diabetes and heart disease. Some healthcare professionals may prescribe Ozempic off-label to support weight loss.
Need a diagnosis or prescription quickly? Optum Perks offers personalized on-demand care in as little as 15 minutes. For $29, answer a few questions online and receive a diagnosis and treatment plan from a US-licensed healthcare professional. Get started here.
How long does a dose of Ozempic last?
Semaglutide, the active ingredient in Ozempic, has a half-life of 1 week. This means it takes 1 week for your body to eliminate half of each dose of the drug.
The level of Ozempic peaks in your body 1 to 3 days after you inject a dose. Due to its long half-life, Ozempic will stay in your system for about 5 weeks after you stop taking it.
How long does Ozempic keep working after you stop taking it?
Just because Ozempic may stay in your system for 5 weeks doesn’t necessarily mean it maintains its effectiveness for that long.
Ozempic’s effects gradually wear off week by week after you stop taking it for good. Exactly how long it takes for you to stop feeling its effects (like not feeling hungry) may vary from person to person.
Skipping a weekly dose may cause a temporary dip in Ozempic’s benefits. If you miss a dose, it’s best to consult a healthcare professional for guidance on the best course of action. They may recommend that you take the missed dose at a different time or postpone it for the next scheduled injection.
What happens when you stop taking Ozempic?
Because Ozempic has such a long half-life, the concentration in your body slowly decreases week by week after you stop taking it — like a natural tapering effect.
Ozempic isn’t expected to cause withdrawal symptoms if you stop using it. But it’s important to note that Ozempic is prescribed as a long-term treatment for chronic conditions, including type 2 diabetes and obesity.
If you stop treatment with Ozempic, it’s possible that symptoms of your original condition will return. This is called a rebound effect.
Health factors that may be affected by Ozempic rebound include your weight, heart health, and blood sugar levels. Because Ozempic can reduce your appetite, stopping this drug may lead to increased hunger and overeating. In turn, it’s possible to regain the weight lost during treatment with Ozempic.
Importantly, stopping Ozempic also means that it will no longer help manage your blood sugar. If you take Ozempic for diabetes and wish to stop, it’s important to talk with your doctor first. You may need to replace Ozempic with another medication to ensure that your diabetes is well managed.
To learn about other options for diabetes medications, see this article.
Other weight loss drugs
While doctors may prescribe Ozempic off label for weight management, it’s not FDA-approved for this purpose. However, a similar drug called Wegovy is approved for weight loss.
Wegovy and Ozempic contain the same active ingredient, semaglutide. They’re both given as injections under the skin. However, because these drugs are approved for different conditions, they come in different strengths and dosages.
The maximum dosage of Wegovy is 2.4 milligrams (mg) per week. This is higher than the maximum dosage of Ozempic (2 mg per week). As a result, a person taking Wegovy may be receiving higher amounts of semaglutide than someone taking Ozempic.
Your dosage of Wegovy or Ozempic will depend on certain factors, including any other conditions you may have or medications that you take. Your doctor will prescribe the right dose for you based on how your body responds to the medication and any side effects that may develop.
Besides semaglutide, alternative weight loss medications may include:
Free prescription coupons
Seriously … free. Explore prices that beat the competition 70% of the time.
Get free cardOther diabetes drugs
Besides Ozempic semaglutide injections, the FDA has also approved oral semaglutide (Rybelsus) to help manage type 2 diabetes.
Some other diabetes medications include:
- Insulin:
- insulin glargine (Lantus)
- insulin aspart (NovoLog)
- insulin lispro (Humalog)
- Biguanides:
- metformin (Riomet)
- Thiazolidinediones:
- rosiglitazone (Avandia)
- pioglitazone (Actos)
- GLP-1 agonists:
- exenatide (Bydureon Bcise)
- dulaglutide (Trulicity)
- Dipeptidyl peptidase IV (DPP-4) inhibitors:
- sitagliptin (Januvia)
- saxagliptin (Onglyza)
- linagliptin (Tradjenta)
- Sodium-glucose transporter-2 (SGLT-2) inhibitors:
Summary
Ozempic has a long half-life of 1 week, and it may take around 5 weeks for your body to completely remove it. Its therapeutic effects — including blood sugar management and weight loss — will gradually decrease throughout this period.
If you’re considering stopping Ozempic, talk with your doctor first to ensure a smooth transition. They can advise on alternative treatment options tailored to your health needs. For example, if you take Ozempic for diabetes, you may need a different medication to keep your blood sugar levels in check.