Help balance your pet"s thyroid and support all-natural healing with Resthyro, ideal for the treatment of hyperthyroidism in pets. Hyperthyroidism occurs when the thyroid overproduces hormones. This vet-approved herbal remedy is recommended for cats exhibiting hyperthyroid-related symptoms including weight loss, hair loss, excessive appetite, increased thirst and urination, diarrhea, vomiting, increased heart rate, shortness of breath, seborrhea, and chronic skin infections.