The body uses the amino acid tyrosine and the mineral iodine to make thyroid hormones, which are essential for heat, energy and many physical and mental functions. This formula provides tyrosine and 11 vitamins and minerals involved in making thyroid hormones efficiently. Not advisable if pregnant or in cases of melanoma, schizophrenia, high blood pressure or if taking MAO inhibitors. One capsule provides: Vitamin C 12.5mg, niacin, 15mgNE, vitamin B6 3.3mg, folic acid 60g, vitamin B12 5g, iron 1.25mg, magnesium 25mg, zinc 2.5mg, iodine 30g, manganese 1.25mg, copper 250g, selenium 30g, tyrosine 450mg. Suggested intake: Take 2-3 capsules a day.