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Can You Take Ozempic If You Have Thyroid Problems?

Sarah Radford
Written By Sarah Radford
Nutrition Editor
Original Publish Date: Apr 6, 2025, 10:39 AM
Last updated: Apr 15, 2025, 05:01 PM
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can you take ozempic with thyroid problems
View all Contents
  • 1. Ozempic Is Usually Safe for Common Thyroid Conditions
  • 2. When Ozempic Should Be Avoided Entirely
  • 3. What to Watch For If You Do Take It
  • 4. Combining Ozempic with Thyroid Medication
  • 5. Talk to Your Doctor Before You Start
  • Final Thoughts

If you’re managing a thyroid condition and also struggling with type 2 diabetes or weight loss, you might be wondering whether Ozempic (semaglutide) is a safe option. On the surface, it seems like a promising medication—it helps regulate blood sugar, supports weight loss, and reduces cardiovascular risk. But the issue becomes a little more complicated when thyroid disorders enter the mix.

The answer? It depends on your specific thyroid history. While many people with common thyroid issues can safely take Ozempic, there are notable exceptions. Understanding where the line is drawn is key to making an informed decision.

1. Ozempic Is Usually Safe for Common Thyroid Conditions

If you have hypothyroidism or hyperthyroidism—two of the most common thyroid disorders—Ozempic is generally considered safe, as long as your condition is stable and managed with medication. Most people with these diagnoses take levothyroxine or other thyroid hormone replacements, and clinical evidence doesn’t show that Ozempic directly worsens thyroid hormone function in these cases.

However, semaglutide can slow down how quickly food moves through the stomach, which might affect the absorption of oral medications, including thyroid hormones. That doesn’t mean Ozempic is off-limits, but your doctor may need to monitor your thyroid levels a little more closely, especially during the first few months after starting the drug.

2. When Ozempic Should Be Avoided Entirely

There’s a very specific group of people for whom Ozempic isn’t just risky—it’s contraindicated. If you have a personal or family history of medullary thyroid carcinoma (MTC), or if you’ve been diagnosed with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2), Ozempic is not recommended.

This warning stems from animal studies, where rodents given semaglutide showed an increased risk of developing C-cell thyroid tumors. Although these findings haven’t been conclusively replicated in humans, the FDA still considers the potential risk serious enough to issue a boxed warning.

In short, if MTC or MEN 2 runs in your family, you’ll want to avoid Ozempic and consider other treatment options. That includes drugs in the same class, like Wegovy or Rybelsus, which carry the same risk profile.

3. What to Watch For If You Do Take It

Let’s say you don’t have any high-risk thyroid cancer history. You’re a good candidate for Ozempic, and your doctor signs off. What next?

You’ll want to pay attention to any new or unusual symptoms that could signal thyroid trouble. These include swelling in the neck, hoarseness, a lump or nodule near the throat, or difficulty swallowing. While these issues are rare, they’re not impossible—and early detection is key.

Your provider may also recommend periodic blood tests to monitor your thyroid hormone levels and make sure your existing thyroid condition stays stable while you’re on the medication. This is especially important if you’re taking thyroid hormone replacement, as even minor shifts in absorption can affect how you feel day to day.




4. Combining Ozempic with Thyroid Medication

If you’re already taking thyroid meds like levothyroxine, your doctor might recommend adjusting the timing of your doses. Since Ozempic can delay gastric emptying, there’s a theoretical risk that it might interfere with the proper absorption of thyroid hormones. Taking levothyroxine on an empty stomach first thing in the morning—ideally at least 30 minutes before food or other medications—can help reduce this risk.

In some cases, patients may notice subtle changes in their energy levels, mood, or weight regulation after starting Ozempic. These symptoms may not be side effects of the drug itself but rather the result of changes in thyroid hormone absorption. That’s why communication with your healthcare team is essential.

5. Talk to Your Doctor Before You Start

At the end of the day, whether or not Ozempic is safe for you comes down to your individual health profile. If you have a well-managed thyroid condition without a family history of MTC or MEN 2, you can likely take Ozempic with appropriate monitoring.

But this is not a decision to make on your own. Your doctor will weigh the benefits of blood sugar control and weight loss against the potential risks and guide you through any necessary adjustments to your medications or monitoring plan.

Final Thoughts

Ozempic can be an incredibly effective medication for blood sugar management and weight loss, and it’s often safe for people with common thyroid conditions. But it’s not a one-size-fits-all treatment. The presence of certain thyroid cancers—or even a family history—can make this medication a no-go. For everyone else, the key is careful coordination with your doctor and ongoing monitoring to keep both your blood sugar and your thyroid hormones in a healthy range.

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Contributors

Sarah Radford
Sarah Radford
Nutrition Editor
Sarah Radford combines her skills in writing, CrossFit, and nutrition as an expert contributor for the Supplement Institute. Her writing aims to simplify the world of wellness and nutrition, making it easily digestible for her readers.
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