My one foster cat that I had before he was adopted was on meds for his thyroid condition. He had been a shelter kitty for at least 10 years, and it just got worse and worse when he was in the shelter. I took him in, gave him good food, made sure he got his meds regularly, and by the time he was adopted, he was down to 1/4 of the dose of his meds. He was almost off them by the time he passed away at age 15 (from a tumor, not thyroid or FIV related). With good food, lots of love, Beau will get better and better! I'll keep him in my thoughts and prayers.