I'm sorry to hear that Spunky has a heart murmur and that Emily has hyperthyroidism. My Storm also has hyperthyroidism and he takes it in the pill form. He also takes the very minimum 2 times a day. He loves the chicken pill pockets so I put the pills in part of one of them and he just thinks he's getting a treat. I would think that the liquid would be harder to get into a cat because it's messier and it would also taste bad too. Good luck.