This product supports thyroid function. Formulated for the slower-metabolizing individual, but also works for moderately fast-metabolizers. However, because it is designed to boost and balance thyroid function, anyone coping with fatigue or having difficulty losing weight can benefit from it. Each capsule contains 37 mg of pure lyophilized thyroid tissue, which helps your thyroid gland produce thyroxin (T4), and supports all of the other normal Thyroid tissue functions. Consult a healthcare professional for suggested dosing.