Adthyza has been discontinued as of November 2025. Learn why this thyroid medication is no longer available and what options you have in 2026.
If you've been trying to fill a prescription for Adthyza and coming up empty, you're not alone. Thousands of patients with hypothyroidism relied on this natural desiccated thyroid (NDT) medication — and now it's simply gone from pharmacy shelves. The frustration is real, and it's valid.
In this article, we'll explain exactly what happened to Adthyza, why it's so hard to find in 2026, and what steps you can take right now to continue managing your thyroid condition effectively.
Adthyza (also known as Adthyza Thyroid) is a brand-name natural desiccated thyroid medication that was manufactured by Azurity Pharmaceuticals. It was made from porcine (pig) thyroid glands and contained both Levothyroxine (T4) and Liothyronine (T3) — the two key thyroid hormones your body needs.
Adthyza was prescribed for hypothyroidism (underactive thyroid), goiter prevention, and as adjunctive therapy in thyroid cancer treatment. It was available in five tablet strengths ranging from 1/4 grain (16.25 mg) to 2 grains (130 mg).
Many patients preferred Adthyza and other NDT medications over synthetic-only options like Levothyroxine (Synthroid) because NDT provides both T4 and T3 hormones naturally, more closely mimicking what a healthy thyroid gland produces.
To learn more about the drug itself, check out our guide: What Is Adthyza? Uses, Dosage, and What You Need to Know.
There isn't just one reason Adthyza has disappeared from pharmacies — it's a perfect storm of factors affecting NDT medications across the board.
The most straightforward reason you can't find Adthyza is that Azurity Pharmaceuticals discontinued the product in late November 2025. The drug was first marketed in February 2023 and had a lifespan of less than three years. Once a manufacturer stops making a drug, any remaining inventory gets used up quickly, and no new supply enters the market.
In August 2025, the U.S. Food and Drug Administration (FDA) announced plans to remove all Desiccated Thyroid Extract (DTE) products from the market. This includes not just Adthyza, but also Armour Thyroid, NP Thyroid, and every other NDT brand. The FDA reclassified NDT products as biologic drugs, requiring a new and rigorous approval process that most manufacturers haven't completed.
Manufacturers have been given a 12-month transition period, but the future of the entire NDT drug class remains uncertain.
Adthyza's disappearance is part of a larger pattern. Nature-Throid and WP Thyroid have been unavailable since 2020. NP Thyroid had recalls in 2020-2021 due to superpotent tablets. Armour Thyroid, the most recognized NDT brand, remains difficult to source consistently in early 2026. The entire NDT market has been shrinking for years.
NDT medications have always been a niche product compared to synthetic Levothyroxine, which dominates the thyroid medication market. With fewer manufacturers willing to invest in NDT production — especially given the FDA's new regulatory stance — the supply has gotten tighter and tighter.
If you depended on Adthyza for your hypothyroidism treatment, you still have options. Here's what to consider:
The most important step is to speak with your prescriber about switching to another thyroid medication. Your options may include:
For a deeper look at your alternatives, read our full guide: Alternatives to Adthyza If You Can't Fill Your Prescription.
If your doctor switches you to Armour Thyroid or another NDT medication, finding it in stock can still be a challenge. Medfinder helps you check which pharmacies near you currently have your medication in stock — saving you the time and stress of calling around.
Chain pharmacies often face the biggest supply constraints during shortages. Independent pharmacies sometimes have better access to NDT medications because they work with different wholesale distributors. Don't overlook them.
If all commercial NDT options are unavailable, a compounding pharmacy can create a custom thyroid medication with the specific T4/T3 ratio you need. Your doctor will need to write a special prescription for this. While it may cost more out of pocket, it's a reliable backup option.
With Adthyza discontinued, the Adthyza Cares savings program is no longer active. If cost is a concern as you transition to a new medication, check out our tips on How to Save Money on Adthyza Alternatives in 2026.
Losing access to a medication that worked for you is stressful — especially when it feels like the whole system is working against you. Adthyza's discontinuation, combined with the FDA's broader crackdown on NDT products, has left many thyroid patients scrambling for answers.
But you do have options. Start by talking to your doctor, explore the alternatives, and use tools like Medfinder to track down what you need. You don't have to navigate this alone.
For the latest updates on the NDT landscape, bookmark our Adthyza Shortage Update page.
You focus on staying healthy. We'll handle the rest.
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