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Are Ozempic and Wegovy knock-offs safe? What to know about compounded GLP-1s

Whether it’s due to an ingredient allergy or other reasons, can help tailor a to meet your needs. And when happen, they can play an important role, too.

Two semaglutide injections, and , were previously . Given the demand, some compounding pharmacies jumped at the opportunity to fill a medical need. By mixing up semaglutide injections from scratch, they could help people continue treatment until the .

Under certain conditions, the FDA to make medications that are in shortage. But as of February 2025, the FDA declared that the semaglutide shortage was resolved. Even so, compounded semaglutide products may not . In this case, compounded semaglutide may seem like a tempting alternative. But is it worth the risk? , a platform for medication savings, highlights what people should know about compounded semaglutide.

Compounded semaglutide is a medication that’s custom-made by a compounding pharmacy. It contains the active ingredient semaglutide, which is a . Semaglutide is found in three FDA-approved medications: Ozempic, Wegovy, and .

Does this mean that compounded semaglutide is the same as Ozempic, Wegovy, or Rybelsus? The short answer: No. And these products are not “generic Ozempic” or “generic Wegovy.” Generic drugs are FDA-approved and must show that they’re to the brand-name drug. There are no FDA-approved generics of these medications yet.

You may see compounded semaglutide in several different dosage forms, including:

• Injections
• Sublingual (under the tongue) drops
• Orally disintegrating tablets (ODTs)
• Oral capsules or tablets
• Nasal sprays

Compounded semaglutide medications are not FDA-approved. Their safety and effectiveness haven’t been established. So it’s not guaranteed that you’ll get the same results with them as with the FDA-approved products.

Key takeaways:

• Compounds are custom-made medications available through specialized pharmacies. They’re often prescribed when an FDA-approved medication, dose, or dosage form is unavailable or not appropriate.
• While FDA-approved semaglutide injections (Ozempic, Wegovy) were in shortage, pharmacies started making compounded semaglutide injections. This practice has continued despite the shortage being resolved. Unregulated semaglutide products are also being sold without a prescription.
• Compounded semaglutide sublingual drops, orally disintegrating tablets, and nasal sprays are also being advertised. But there aren’t clinical studies showing that these forms of semaglutide are safe or effective.

Why is semaglutide being compounded?

Some pharmacies were compounding semaglutide injections to help people access treatment while Ozempic and Wegovy were in shortage. But as of February 2025, the FDA announced that the shortage . Oral semaglutide (Rybelsus) was not affected by shortages and remains available.

Cost isn’t considered a valid reason for compounding copies of semaglutide medications when the FDA-approved product is available. And making small changes just to bypass FDA requirements either. If you’ve been using compounded semaglutide, you may to Ozempic or Wegovy in order to continue treatment.

Compounded semaglutide vs. Ozempic and Wegovy

So what exactly is the difference between compounded semaglutide and Ozempic, Wegovy, and Rybelsus? Their testing and approval, ingredients, and dosage forms are a few differences to consider.

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Testing and approval

Ozempic, Wegovy, and Rybelsus are all FDA-approved medications made by Novo Nordisk. This means they’ve gone through to ensure that they’re safe and effective for their intended uses. During the approval process, the FDA also evaluated where and how these medications are made.

Compounded semaglutide medications are made by specialized pharmacies that source and combine them to make a finished product. These medications are custom made. So they aren’t required to go through the same rigorous testing and approval process. This means they don’t have the same evidence for safety and efficacy as the commercial products.

Ingredients

When compounding semaglutide, pharmacies will use a recipe that’s likely different from Ozempic, Wegovy, or Rybelsus. The commercial medications serve as a , but there may be some minor changes in the inactive ingredients. This is typical with compounded medications.

But some compounded semaglutide medications may also contain extra ingredients that haven’t been tested with semaglutide, such as vitamin B12. It’s not fully known how these additions might affect the compounded medication. And in some cases, these extra ingredients are commercially available and can be administered separately if needed. So there may not be a medical need to add them to the compounded formula in the first place.

Concerns have also been raised about the ingredients used to make some compounded semaglutide products, including the following.

• Semaglutide salts: According to the FDA, semaglutide salts, such as semaglutide acetate, should not be used for compounding. They’re different from what’s contained in Ozempic, Wegovy, and Rybelsus, which are made with semaglutide base.
• Unauthorized sources: Semaglutide base by an FDA-registered facility in order to meet federal requirements. Some pharmacies may be purchasing semaglutide base from facilities that don’t meet this requirement, raising quality and safety concerns.
• Nonpharmaceutical grade ingredients: Some pharmacies may be purchasing semaglutide that’s labeled “for research use only” to make their compounds. These chemicals are unregulated and are not meant to be used in people. So they don’t meet the federal requirements for compounding.

Medication delivery and storage

Ozempic and Wegovy are only available as prefilled injection pens. Compounded semaglutide injections are usually dispensed in a vial. That means you’ll need to draw up your specific dose with a syringe prior to injecting it.

Storage requirements and shelf life will also likely be different with compounded semaglutide. This can how the injections are made.

Dosages

Ozempic and Wegovy come in a limited number of standardized, pre-measured doses that have been extensively studied in clinical trials. And because these are FDA-approved products, every injection pen is designed to deliver a consistent and predictable amount of semaglutide with each injection.

Compounded semaglutide, on the other hand, can be formulated to provide doses that are different from the commercial products. This includes “” — much smaller doses than those approved by the FDA. These products are often promoted as more customizable or easier to tolerate. But there isn’t evidence to support microdoses, and sticking with very low doses may not give you the same results you’d expect from standard doses.

Dosage forms

Ozempic and Wegovy are both injections, while Rybelsus is an oral tablet. All three medications have been carefully formulated and tested to ensure their effectiveness and safety. And studies have been done to understand the expected in the body when taking these specific forms and doses.

Compounded semaglutide comes in a variety of dosage forms beyond injections. Semaglutide in the form of sublingual drops, ODTs, and nasal sprays hasn’t been studied in humans. There aren’t any FDA-approved versions of these dosage forms to use as a reference. And the absorption rate of semaglutide in these forms is not well understood. So it’s difficult to know what to expect from taking these medications.

Is compounded semaglutide safe and effective?

It’s not possible to say for certain. This is because the FDA doesn’t evaluate the safety and effectiveness of compounded medications. But that doesn’t mean that they’re ineffective or dangerous. Compounded medications have an important place in medicine. Yet, they also have their own unique risks.

Unlike drug manufacturers, compounding pharmacies are primarily regulated by . Compounding regulations and the degree of oversight can vary by state. So not all compounding pharmacies are following the same set of quality standards. But some pharmacies may be accredited. This means that they’ve been found to meet a specific set of standards.

Some compounding pharmacies, known as , are registered with the FDA. These pharmacies are inspected by the FDA. They’re also required to follow stricter regulations called regulations.

Keep in mind that the quality of compounded medications can vary across pharmacies. The pharmacy that fills your prescription, the ingredients they use, and how they make it matters.

What are the side effects and risks of using compounded semaglutide?

Compounded semaglutide may cause many of the same as Ozempic and Wegovy. But keep in mind that these products aren’t the same across the board. They can also differ from FDA-approved forms in their dose, route of administration, and ingredients, which can influence potential side effects.

Common semaglutide side effects include:

• Nausea and vomiting
• Diarrhea or constipation
• Stomach pain
• Gas and bloating
• Fatigue

Rare but serious semaglutide side effects include:

• Very low blood sugar (glucose)
• (slowed stomach emptying)
• Acute (sudden) kidney damage
• Increased risk of

Because of these side effects, some people may be advised to like semaglutide altogether.

Risks specific to compounded semaglutide

In addition to the risks outlined above, there are other potential risks associated with using compounded semaglutide. Here are examples of these.

• Inappropriate ingredients: As covered above, some pharmacies may be using ingredients that don’t meet FDA requirements. These ingredients may have unknown quality and purity. Or they may not work the same way as the original ingredient.
• Potential contamination: There are risks of contamination with compounded semaglutide injections, especially if they’re not made properly or in a sterile environment. found that about 45% of over a roughly 10-year period were from compounding pharmacies. These recalls were mostly due to sterility concerns.
• Quality control processes: Compounding pharmacies may not have the same rigorous quality control processes as drug manufacturers. This can be particularly risky if they’re producing a large volume of these compounded medications.
• Dosage errors: Compounded semaglutide vials don’t have the same safety features as the prefilled injection pens. So there can be a higher risk of injecting . This may be more likely if you aren’t provided clear instructions with your prescription, or if you aren’t familiar with how to use a syringe to measure your dose.

Many of these risks are possible with any medication. But it’s especially important to be aware of them with compounded semaglutide. Working with an experienced, reputable pharmacy can help lower the risk of these potential issues.

What to look for when buying compounded semaglutide

As mentioned, compounded copies of semaglutide injections have been largely phased out. In most cases, your next step would be switching from compounded semaglutide to an FDA-approved product.

But if your prescriber believes that a custom-compounded semaglutide product is medically necessary, here are a few things to look for in a pharmacy.

• Accreditation: Accredited pharmacies have been found to comply with for compounding medications. This can provide another layer of reassurance. Examples of accreditation programs include those through the and the . Outsourcing facilities can be another option to consider since they’re required to meet more stringent requirements.
• Proper licensing: The pharmacy . The licenses should be in good standing — not expired, revoked, or have current disciplinary action. The pharmacy should also have a physical address and phone number in the U.S. For injections, some states require a separate sterile compounding license.
• Readily available staff: You should be able to call the pharmacy and speak with a licensed pharmacist to answer your questions. They can help you understand how to use your medication properly to avoid errors.
• False advertising: Be cautious of pharmacies or other companies advertising compounded semaglutide as “generic” versions of Ozempic or Wegovy. They also shouldn’t be making claims about compounded semaglutide’s effectiveness or safety.
• Prescription requirements: Compounded semaglutide always requires a prescription. Steer clear of pharmacies that will sell you semaglutide without one. There’s a chance you could receive a .

The information covered above may not be readily available to you. So if you have any questions or want more information, contact the pharmacy. They can tell you about their ingredient sources, what’s in your medication, quality control processes, and more.

How to switch to FDA-approved semaglutide

But what should you do if you need to switch from compounded semaglutide to Ozempic or Wegovy? Here are a few tips to help make the transition as smooth as possible.

• Talk to your healthcare team. They can help determine whether Ozempic or Wegovy is the right fit for your needs. If needed, they can also discuss .
• Check your insurance coverage. Your prescriber may need to submit a or documentation to help you get coverage.
• Explore savings programs. If you're new to using GoodRx for and savings, pay an introductory price of $199 per month for the first two fills (only available for certain doses). After that, most ongoing fills are $349 per month, depending on the medication and dose. You may also be eligible for a or through Ozempic and Wegovy’s manufacturer.

If you’re unsure where to start, your healthcare team can help you navigate the next steps.

Frequently asked questions

Why do people take vitamin B12 with compounded semaglutide?

It’s possible that some people in their vitamin B12 levels after starting semaglutide. In this case, a vitamin may be recommended to prevent or treat low levels.

Some websites may claim that adding vitamin B12 helps boost your metabolism for added weight loss. But this in clinical studies.

How do you know if the semaglutide you bought online is safe?

Buying semaglutide online can increase the risk of receiving a counterfeit product. You can check to see if the website is legitimate by using NABP’s . If you’ve purchased , , or online, inspect your medication and its packaging before use. Take note of any differences in appearance compared to the real products.

If you’ve purchased compounded semaglutide online, it may be more difficult to know if it’s safe. The best way to protect yourself is to get your medication from an experienced, reputable pharmacy. Working with accredited pharmacies or outsourcing facilities can provide an additional layer of reassurance.

How can you avoid buying counterfeit or illegal semaglutide?

The best way to avoid buying counterfeit or illegal semaglutide is to get FDA-approved Wegovy, Ozempic, or Rybelsus from your local pharmacy. But if that’s not possible, the FDA has if you’re thinking about purchasing medications from an online pharmacy. You can also check the website by using NABP’s .

Will insurance cover compounded semaglutide?

It depends on your specific plan. Compounded medications aren’t always covered by insurance. To learn more, you can reach out to your plan for coverage details.

In many cases, you’ll need to pay out of pocket for your prescription. Just keep in mind that cheaper doesn’t necessarily mean better with compounded medications.

The bottom line

As of February 2025, the semaglutide injection (Ozempic, Wegovy) shortage was resolved. As a result, compounded semaglutide injections are largely being phased out. While they may still be available in limited circumstances, it’s good to understand the potential risks.

Keep in mind that compounded semaglutide is different from Ozempic, Wegovy, and Rybelsus. So if you’re considering giving it a try, discuss the potential benefits and risks with your healthcare team. Ask questions so you understand what’s in the medication, and who you’ll be receiving it from. Avoid buying semaglutide that doesn’t require a prescription.

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