Supports Healthy Thyroid Function Supports Healthy Metabolism. Thyroid Energy is a complete nutritional supplement for the support of a healthy thyroid gland. It has combined iodine and tyrosine, the two constituents necessary for the synthesis of thyroid secretions. The minerals selenium, zinc and copper have been added as cofactors needed for normal thyroid function. In addition, Thyroid Energy has the ayurvedic herbal extract ashwagandha to complement its nutritional support components. Natural color variation may occur in this product.