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Dr. Gary
Dr. Gary, Cat Veterinarian
Category: Cat Veterinary
Satisfied Customers: 19778
Experience:  DVM, Emergency Veterinarian, BS (Physiology)
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My cat is hyperthyroid and we have been trying transdermal

Customer Question

My cat is hyperthyroid and we have been trying transdermal ear medication. However he has cauliflower ears and I am not sure how this medicine is absorbing. We have had trouble regulating his thyroid. I know this must be a moot point because we are going totry radio iodine. But I was trying to figure ok why we have had so much trouble. He is also diabetic and 16 years old!
Submitted: 2 years ago.
Category: Cat Veterinary
Expert:  Dr. Gary replied 2 years ago.
Hello, I'm Dr Gary. I've been practicing veterinary medicine since 2007. I look forward to helping with your questions/ concerns.
This is not uncommon with the trans-dermal medication. It's nice that it's easy to apply, but the absorption is pretty spotty and random. That means we don't have a consistent blood level of the medication and it's tough to manage the disease well.
I would probably go with oral Methimazole along with the special diet (Hill's Y/D) until you get radioactive iodine therapy. The iodine therapy is the gold standard, and what I would absolutely do. It's expensive and a bit labor intensive for a few days, but it's a one time deal and it's curative. It's worth it in my opinion.
I hope this helps, let me know if you have any other questions.