Tyrosine is an essential component for the synthesis of thyroid hormones and neurotransmitters. Kelp is a concentrated source of bio-available iodine, which is an essential component of the thyroid hormones. B vitamins and copper are essential co-factors in the metabolism of tyrosine. Liquorice root and B vitamins support adrenal function which in turn supports thyroid function. Formulated by well-known naturopath Martin Budd, ND, this synergistic blend of nutrients and herbs helps to support the health of the thyroid gland.Ingredients for Nutri Thyro Complex:One Tablet of Nutri Thyro Complex provides: Magnesium (aspartate) 25 mg Vitamin C (ascorbic acid) 250 mg L-Tyrosine 250 mg Calcium (aspartate) 40 mg Vitamin E (dl-alpha tocopherol) (100 IU) 103 mg L-Carnitine 125 mg DL-Phenylalanine 125 mg Iodine (Kelp) 75 ¼g Zinc (picolinate) 4 mg Vitamin B6 (pyridoxine HCl) 12.5 mg Manganese (chelate) 1.5 mg Selenium (aspartate) 25 ¼g Vitamin B3 (niacin) 12.5 mg Liquorice Root 10 mg Vitamin B1 (thiamin HCl) 5 mg Vitamin B2 (riboflavin) 5 mg Copper (chelate) 0.5 mg Vitamin A (palmitate) (1403 IU) 750 ¼g Folic Acid 75 ¼g Other Ingredients:Calcium stearate, Ethyl cellulose, Silicon dioxide, Stearic acid.Directions for use OofNutri Thyro Complex :1-3 tablets daily before food, or as directed.Caution:This product contains vitamin A. Do not exceed 750 ¼g of vitamin A (as retinol) per day if pregnant or likely to become pregnant except on the advice of a doctor or antenatal clinic. Do not take if suffering from phenylketonuria (PKU) (phenylalanine). Do not take if suffering from Wilson´s disease (copper). Consult with a medical doctor if taking thiazide diuretics (liquorice).