Thyroid Formula, 30 capsules, Strong Nature Thyroid Formula is a dietary supplement, a combination of four high-quality ingredients, which contribute to the proper functioning of the thyroid gland. Thyroid Formula contains L-tyrosine, selenium, vitamin E and iodine. Administration method: Adults: 1 capsule per day. Properties: L-tyrosine is an essential amino acid, necessary for the production of thyroid hormones. Selenium is a trace element normally present in the human body, necessary for the normal functioning of the thyroid gland. It acts as a powerful antioxidant, especially when combined with vitamin E. The thyroid gland needs iodine for hormone production. Presentation: 30 capsules