L-Tyrosine is a non-essential amino acid that plays an important role in the production of neurotransmitters dopamine and norepinephrine. In addition, because L-Tyrosine is necessary for the synthesis of thyroid hormone and epinephrine (adrenaline), L-Tyrosine supports healthy glandular function and stress response.* Contains no: sugar, salt, starch, yeast, wheat, gluten, corn, soy, milk, egg, shellfish or preservatives. Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Persons with thyroid disease (hyperthyroidism), melanoma, or those taking MAO inhibitors or other mood altering medications should seek the advice of a physician before consuming this product. Keep out of reach of children. Close cap tightly after each use and store in a dry place to avoid caking. This product is sold by weight not volume. Store in a cool, dry place. Please Recycle.