Pet Alive Thyroid Soothe is an FDA-registered natural supplement containing 100% homeopathic ingredients known for their ability to support thyroid gland functioning, as well as the entire endocrine system. Taken internally, the ingredients in Thyroid Soothe help to maintain balance in the thyroid gl&. In addition, routine energy levels & a healthy weight & hair growth are also supported. Presented in a convenient dissolvable granule form, the tiny granules are easy to administer (even to animals that will not swallow tablets) & are simply sprinkled on the back of the tongue & left to dissolve. May be used with Pet Alive Heart & Circulation Tonic.