Rose - Methimazole can be put into a liquid suspension form that can be mixed with food or a topical cream that goes in the cat's ear.
We have a cat that also has hyperthyroidism and she is on the same medication. We tried Pill Pockets but she is a true calico cat (meaning that she's very particular and mean as a snake!
) She will only take the Pill Pockets if they're super-fresh and we found she wasn't getting a consistent dose of medication.
So we use the liquid form and put it over a little chopped chicken or turkey for her - we've had good luck with that, at least. (I wouldn't dare to try the topical application because she's wouldn't tolerate us doing that to her!):
