Sue, I have an older cat (10 ish) and she was losing weight and her fur was unkempt. She is on something called "throxin-L" and has blossomed. After 2 months her fur looks great (long haired calico) and her weight is good as well. She takes 1 pill a day.
Also, many homeopathic and holistic vets have diet changes and remedies for thyroid problems. Joan
