Pure Encapsulations Thyroid Support Complex is a comprehensive formula containing vitamins, minerals and herbal extracts to support healthy thyroid cell metabolism and thyroid hormone function. The thyroid gland’s main function is to convert iodine into thyroid hormones (T3 and T4).  The thyroid hormones then support your body’s metabolism or energy production.  A well-functioning thyroid gland is critical to several bodily functions including growth, brain development, heart rate, body temperature and central nervous system function. Healthy vitamin A, vitamin D, zinc and selenium status have been associated with maintaining healthy thyroid cell metabolism as well as triiodothyronine (T3) and thyroxine (T4) hormone function. Iodine and l-tyrosine are key components in the synthesis of thyroid hormones. Coleus extract contains forskolin, which has been shown to promote adenylate cyclase activity, supporting thyroid hormone metabolism. Research indicates that ashwagandha and guggul are also key factors for helping to sustain healthy thyroid function. Vitamins A and C, along with selenium, guggul and curcumin, help moderate free radicals that affect iodothyronine 5’-monodeiodinase enzyme activity, the limiting factor in the conversion of T4 to the more active T3 hormone. Gluten Free, GMO Free, Vegetarian Supplement Facts Serving Size: 2 Capsules Amount Per Serving %DV Vitamin A (as vitamin A acetate) 750 mcg 83% Vitamin C (as ascorbic acid) 150 mg 167% Vitamin D (as cholecalciferol) (D3) 5 mcg (200 IU) 25% Iodine (as potassium iodide) 150 mcg 100% Zinc (as zinc citrate) 20 mg 182% Selenium (as selenomethionine) 200 mcg 364% L-Tyrosine (free-form) 500 mg * Ashwagandha (Withania somnifera)extract (root) (standardized to contain 2.5% withanolides) 400 mg * Forskohlii (Coleus forskohlii) extract (root) (standardized to contain 10% forskolin) 100 mg * Guggul (Commiphora mukul) extract (gum resin) (standardized to contain 2.5% guggulsterones) 150 mg * Turmeric (Curcuma longa) extract (root) (standardized to contain 95% cur 100 mg * *Daily value (DV) not established Other Ingredients: Vegetarian capsule (cellulose, water), ascorbyl palmitate Suggested Use: As a dietary supplement, take 2 capsules daily, with a meal. * These statements have not been evaluated by the U.S. Food and Drug Administration. This product is not intended to treat, mitigate, diagnose or cure any disease.