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Restoring Health & Happiness
to Hyperthyroid Cats Since 1992Learn More
Communications
Important Update Regarding Our Tacoma Location:
To ensure we continue providing the highest standard of care for your beloved companions, we have made the decision to pause new bookings at our Tacoma location for the foreseeable future while we restructure our clinic operations.
Please rest assured that all currently scheduled appointments will be fully honored.
We are so incredibly grateful for your understanding and support during this transition, and we apologize for any inconvenience it may cause. We are working hard behind the scenes and will share more detailed updates with you soon!
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Beginning April 1st, 2026, an additional 3% surcharge will be applied to all credit card payments. Debit card and Care Credit card transactions are exempt from this fee. Please feel free to ask our staff any questions you may have, including inquiries about alternative payment options.
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Due to continuing concerns about Avian Influenza (H5N1) transmission through raw meats, we are not currently accepting raw food to be brought in with cats referred to FHTC for I-131.
Information is evolving; please contact your primary veterinary for updates.
Offering the safest, most reliable treatment for Feline Hyperthyroidism
Hyperthyroidism is the most common hormonal disease of cats resulting from excess thyroid hormone, which puts significant and potentially fatal stresses on the body. Radioiodine therapy, also referred to as I-131, is the safest and most effective therapy available. It's less risky than surgery, as it is generally a one-time injection and does not require medicating your cat daily for years. Most cats stay a couple nights before returning home — happy and healthy.
Essential Reading (before your appointment):
- Making an Appointment
- Cost of Treatment
- The Hospital Stay
- Post-Treatment Guidelines
- Cancellation Policy
- Please read if your cat’s T4 level is 12-19 µg/dl: Understanding Your Cat's Semi-Aggressive Hyperthyroidism
- Please read if your cat’s T4 level is greater than 19 µg/dl: Understanding Your Cat’s Aggressive Hyperthyroidism
Testimonials
Monty is 12 years old. Dr. Vaughan had been monitoring Monty’s thyroid over the years and identified that he was borderline for hyperthyroidism. After discussing his overall appearance, behavior and appetite, we decided that... read more
MontyPox's Story Does it make sense to treat hyperthyroid in a fourteen-year-old, mostly outdoor cat? That’s what we were asking ourselves in the summer of 2013. Pox let me know his opinion by following me... read more
PoxSeattle, WA
Will & Grace found me in 1999 when they were four weeks old. They were born near in a parking lot off Highway 99. They are twins and do everything together. This year they celebrated their... read more
Will, Grace, and HunterEdmonds, WA
Dr. Vaughan; Kathy; Miranda; and anyone who was involved in treating and caring for Tigger. Just wanted you to see the life Tigger is leading because of your excellent care on this upcoming anniversary... read more
PepperMy family has had Lila since she was a kitten. She is turning 15 in October, I was only 10 when we got her. I moved away as an adult for a few years... read more
LilaShoreline, WA
Great place. They were so good to my kitty who was really scared. He seems to be completely cured. read more
Hello! Just wanted to let you know Rio Blanco is doing great! As soon as we got home he started emptying the bowls of food! I haven't even opened the anti-nausea or the... read more
Patrick and RioThanks to Dr Faythe Vaughan, and her kind staff in Shoreline and Tacoma for giving us at least 5 extra, good quality, years with our buddy, Rocky! He was a rescue cat to begin with, and his good... read more
RockyTacoma, WA
My cat was diagnosed as hyperthyroid when she was 10. We had her treated as soon as she was diagnosed and I was glad it was found early. I didn’t really give the thyroid... read more
SavannahLynnwood, WA
We want to thank you for your extraordinary efforts in looking after our Samson's well being. You took the initiative of a problem we were not aware was even present. We are very, very... read more
SamsonPort Townsend, WA
They are very personable, professional, and knowledgeable about their very specialized practice. If you have a cat with thyroid issues, I highly recommend this clinic. read more
BeckySeattle, WA
I wanted to drop you and everyone at FHTC a note to let you know that Byron (the PAWS™ kitty FHTC treated pro bono earlier this year) was adopted last month! Even better, he... read more
ByronSeattle, WA
As a member of an animal rescue organization on Vashon Island (VIPP), as well as being a chronic cat owner, I've had many opportunities to visit the Feline Hyperthyroid Treatment Center. Over the past... read more
Piro Kramar. Vashon Island Pet ProtectorsVashon Island, WA
Princess started losing weight and after checking with the vet she was confirmed as being Hyperthyroid. After Approximately 13 months of of a paste-like med applied to the ears, switching from left to right... read more
Ripley (kitty) and I just wanted to thank Dr Vaughan and the whole staff for your great service and care. You were all great to work with, and communicated well with us! Ripley left... read more
Kali & RipleyYou took care of our Nina Kitty and it was like she found the Fountain of Youth! At age twelve, she had been slowly losing weight and getting a bit more "yowly" but we... read more
NinaThree months ago my 13 year old kitty Miss Fanny spent three days in the care of Dr. Vaughan and the staff. Before treatment she had been losing weight, getting more lethargic and her... read more
Miss FannyNorthbend, WA