Solaray Iodine 500 mcg is a dietary supplement designed to support thyroid health and provide essential iodine to the body. Iodine is an essential mineral that the body requires for the production of thyroid hormones, which regulate metabolism, energy production, and many other critical functions. This supplement contains 500 mcg of iodine per capsule and is often used to help prevent iodine deficiency, which can lead to thyroid imbalances.