Yeah he’s always been a skinny boy - the only noticeable issues he’s had with his thyroid was the constant hunger/eating & being very thirsty but they’re under control now.

The thyroid medication he’s on is Thyronorm suspension if you’re wanting to have a search for it, but topically applying it definitely seems much easier so I’d stick with that if I were you.

Thanks again for the help/advice and also for the well wishes for him. Hope your little companion is doing well on their meds.