Hyperthyroidism in Cats: What to Watch For and How We Can Help

Has your cat been restless at night, losing weight, acting aggressive, or vomiting? These could be signs of hyperthyroidism. Thyroid health is incredibly important for your cat, especially as they age. Unfortunately, older cats are more prone to hyperthyroidism, which happens when their thyroid glands produce too much hormone. This is often caused by a benign thyroid tumor but can lead to serious health problems if left untreated. Organs like the heart, kidneys, and even the brain can be affected. But here’s the good news – hyperthyroidism is very treatable!

Introducing Iodine-131 (I-131) Therapy for Cats

We’re excited to offer a treatment that can make a big difference: Iodine-131 (I-131), a safe, simple, and effective way to treat hyperthyroidism in cats. Here’s how it works: when iodine, the substance that helps the thyroid create vital hormones, is made radioactive (I-131) and injected into the body, it releases just the right amount of radiation to target and destroy the abnormal thyroid cells. And the best part?
  • 95% of cats are permanently cured with just one injection!
  • It’s a quick and painless treatment – no anesthesia required.
  • Healthy thyroid tissue generally stays unharmed, and there’s no risk to other organs.
  • Plus, you generally won’t have to worry about giving daily medication!
After the injection, your cat can relax in our cozy, monitored radiation ward for a few days while their body processes the iodine.

What to Expect During Treatment

After a thorough exam and a recommendation from one of our board-certified internal medicine doctors, your cat’s treatment will begin with a small, under-the-skin injection of I-131. While the procedure is safe for both pets and people, federal laws and radiation safety guidelines require your pet to stay with us in a specially designed radiation ward for a few days. At ACCESS Specialty Animal Hospital – Palm Beach County, we’ve created a calm, comfortable space where your cat can safely eliminate any remaining radioactive material before heading back home. We’ll keep your kitty cozy and well cared for during their stay, with our doctors and skilled veterinary technicians keeping a close eye on them day and night.

At-Home Care After Treatment

Once your cat is ready to go home, we’ll provide you with simple instructions to help minimize radiation exposure to your family and community:
  • Keep your cat indoors with limited human contact for two weeks.
  • Use flushable litter for two weeks.
And don’t worry, we’re always here to answer any questions and support you every step of the way as your cat gets back to feeling their best.

Find out more…

There’s more to know about Iodine-131 treatment, and we’d be happy to chat with you about how it can help your cat. Please feel free to reach out to Dr. Alisa Berg and her team at info@accessvet.com for more information.

*Symptoms may vary from cat to cat.

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