A calm cat resting comfortably during I-131 radioiodine treatment near Houston, Texas — I-131 radioiodine therapy is considered the gold standard treatment for feline hyperthyroidism and can often restore normal thyroid function with a single treatment.

Hyperthyroidism is one of the most common hormonal disorders affecting older cats. If your veterinarian has diagnosed your cat with hyperthyroidism, they may recommend I-131 radioiodine therapy, which is widely considered the most effective treatment available.

For cat owners in Houston and the surrounding communities, advanced I-131 therapy is available nearby at Sage Veterinary Imaging in Spring, Texas. This specialized treatment targets the abnormal thyroid tissue responsible for the disease, helping many cats return to normal thyroid function after a single treatment.

What Is Feline Hyperthyroidism?

Hyperthyroidism occurs when the thyroid gland produces too much thyroid hormone, which speeds up the body’s metabolism. The condition most often affects middle-aged and senior cats.

Common symptoms include:

Weight loss despite an increased appetite
Increased thirst and urination
Vomiting or diarrhea
Hyperactivity or restlessness
Poor coat quality
Rapid heart rate

If left untreated, hyperthyroidism can eventually lead to high blood pressure, heart disease, and other serious health complications.

What Is I-131 Radioiodine Therapy?

Veterinary professionals caring for a cat undergoing treatment near Houston, Texas — Cats receiving specialized treatment benefit from close monitoring and compassionate care throughout the process.

I-131 therapy uses a carefully measured dose of radioactive iodine to destroy the abnormal thyroid tissue producing excessive hormone.

Thyroid cells naturally absorb iodine, which allows the treatment to specifically target diseased thyroid tissue while minimizing effects on the rest of the body.

Radioiodine therapy offers several important benefits:

It treats the underlying cause of hyperthyroidism
Most cats require only a single treatment
Daily medication is usually no longer needed
Surgery is not required

For many cats, a single I-131 injection provides a long-term or permanent cure for hyperthyroidism.

Why Veterinarians Recommend I-131

Veterinarians frequently recommend radioiodine therapy because it is both highly effective and minimally invasive.

Other treatment options, such as oral medications or thyroid surgery, can help manage the disease but may require lifelong treatment or carry additional risks.

I-131 therapy works differently because it eliminates the abnormal thyroid cells, addressing the root cause of the condition rather than simply controlling hormone levels.

Most cats tolerate the treatment very well and begin to show improvement as hormone levels gradually return to normal.

What Happens During I-131 Treatment

Veterinary team providing specialized care for a cat at Sage Veterinary Imaging in Spring, Texas — Sage Veterinary Imaging works closely with veterinarians throughout the Houston region to provide advanced diagnostics and specialized therapies for cats.

Cats receiving radioiodine therapy stay at a licensed treatment facility for a short monitoring period after receiving the injection.

The treatment process typically includes several steps.

Pre-treatment evaluation

Before therapy begins, veterinarians review your cat’s medical history and perform blood tests to confirm the diagnosis and ensure your cat is a good candidate for treatment.

Radioiodine injection

Your cat receives a small injection of radioactive iodine, which is absorbed by the thyroid gland.

Monitoring period

Because the treatment involves radioactive material, cats remain at the facility for a brief stay while radiation levels safely decrease.

Return home

Once radiation levels fall to safe levels, your cat can return home. Most cats quickly resume normal behavior and experience improvement as thyroid hormone levels return to normal.

I-131 Treatment Near Houston, Texas

The Sage Veterinary Imaging facility serving cats from Houston and the surrounding Texas communities — Located in Spring, Texas, Sage Veterinary Imaging provides advanced diagnostics and I-131 radioiodine therapy for cats throughout the Greater Houston area.

For cat owners searching for I-131 treatment near Houston, Sage Veterinary Imaging provides specialized therapy at its Spring, Texas facility, located just north of Houston.

The center serves cats from across the Houston metropolitan area, including:

Houston
Spring
The Woodlands
Katy
Sugar Land
Pearland
League City
Conroe
Friendswood

This convenient location allows cat owners throughout the region to access advanced hyperthyroidism treatment close to home.

A Collaborative Approach with Your Veterinarian

Sage Veterinary Imaging works closely with veterinarians throughout the Houston region when pets require advanced diagnostics or specialized therapies.

The facility focuses on advanced imaging and targeted treatments, allowing veterinarians to refer patients for services such as MRI, CT scans, ultrasound, and I-131 therapy while continuing to manage the pet’s overall care.

This collaborative model allows pets to receive specialized treatment while maintaining continuity with their primary veterinarian.

Helping Houston Cats Receive Effective Treatment

Hyperthyroidism can significantly affect a cat’s health and quality of life, but effective treatment options are available.

At Sage Veterinary Imaging near Houston, our team is dedicated to providing advanced care for cats with hyperthyroidism, helping veterinarians and pet owners pursue treatment that restores long-term health and comfort.

If your veterinarian recommends I-131 radioiodine therapy, specialized treatment is available nearby in Spring to help your cat return to a healthier, more comfortable life.

I-131 Radioiodine Treatment for Cats Near Houston, Texas