Our cat was diagnosed with Hyperthyroidism and is being treated with another exam due in 30 days. She's been on the treatment (Methimazole) for 8 days doing very well. Eating, no more vomiting, seemingly gaining a little weight. However, on the 9th day, she managed to eat a little food with her meds, but did not get her evening dose as she has refused to eat. She's acting strange and is losing her strength rapidly now on the 10th day.