As a side note, my last Siamese I got at the humane society needed two pills per day. He thought every time I sought him out it was for a pill and he was always hiding. One of his glands was cancerous and excreting too much hormone, and the other was normal. My vet knew of a traveling laser vet, and I had the bad thyroid removed, and he lived a totally normal life for years. He never left my side after that operation....
So, there might be alternatives.