L-Tyrosine promotes the body's production of neurotransmitters (brain chemicals) and thyroid hormones, and supports healthy stress management. It also helps maintain healthy adrenal function.
L-tyrosine plays an important role in the central nervous system, the thyroid, and the adrenal glands. It is an amino acid precursor for the synthesis of the brain-friendly neurotransmitters norepinephrine and dopamine. By improving the rate of neurotransmitter production and stimulating the central nervous system, L-tyrosine helps relieve the physical symptoms of stress, such as mood swings. Chronically stressed individuals might not efficiently convert phenylalanine to tyrosine, which makes supplementation with L-tyrosine desirable. L-tyrosine also serves as a precursor for the thyroid hormone thyroxine and for melanin, the pigment that protects against harmful ultraviolet rays. L-tyrosine stimulates growth hormone, is involved in adrenal and pituitary function, and is a powerful antioxidant, neutralizing free radicals and inhibiting fat oxidation.