Okay, so I give Samantha a liquid for the hyperthyroid. Costs me about $60 a year (including shipping)and I get it from a pharmacy that my vet uses, but this is directly with me. Let me know if you want the phone number. The liquid is just easier. That being said, she gets a potassium pill every night and this would be completely impossible without a pill popper. The vet should have these, but you could get one off amazon. I use olive oil or butter on the pill and Sam always gets 5 treats after taking meds. Makes it a positive experience and adds calories.
Really glad your guy has something treatable!!! Keep us posted!