L-Tyrosine Powder - 150 grams

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  • Tyrosine is a relatively large, hydrophilic amino acid used as one of the twenty naturally occurring amino acids for protein synthesis
  • Tyrosine is also a precursor for the production of a number of important hormones and neurotransmitters, such as the thyroid hormones and dopamine
  • In addition to being the main raw material of the organic pigment melanin, which is responsible for hair and skin color, Tyrosine also regulates the enzymatic activities
  • A deficiency of tyrosine causes a deficiency of dopamine and norepinephrine, which is associated with depression and apathy, among others


L-Tyrosine is an amino acid that supports brain function. It can be converted by neurons in the brain into the neurotransmitters dopamine and norepinephrine (norepinephrine), hormones that are depleted by stress, overwork and certain drugs. By replenishing the noradrenaline in the brain, mental energy levels are increased and often a feeling of satisfaction is created. L-Tyrosine enhances certain neurotransmitters in the brain and is used to support stress reduction and depression. L-Tyrosine is converted in the body into other important biological compounds, including L-dopa, CoQ10, thyroid hormones and melanin. Tyrosine may also improve athletic performance. L-Tyrosine is an important component of proteins and helps form the bioactive factors vital for cell growth and maintenance. Tyrosine supplementation can improve sports performance in a number of ways. One of the mechanisms that may contribute to fatigue during exercise is an increase in central serotonin levels and an increase in the ratio of serotonin to dopamine. Tyrosine can help lower this ratio and compete with tryptophan (serotonin's amino acid precursor) at the blood-brain barrier. Increased dopaminergic activity may reduce the perception of fatigue. In highly stressful conditions, catecholamine levels can become depleted, and tyrosine can be particularly helpful in these circumstances.

NutraBio.com L-Tyrosine is a pure crystalline amino acid in free form, derived from microbiological fermentation. It is NOT derived from milk. The B vitamins pyridoxine (B-6) and folic acid can aid in the conversion process.

Our L-Tyrosine is fermented from non-GMO corn based glucose.


As a dietary supplement, take 1 or 2 scoops (500mg or 1000mg) mixed with your favorite beverage on an empty stomach, or as directed by your doctor. This powder may clump during storage, which does not affect the quality.

WARNING: NOT INTENDED FOR USE BY PERSONS UNDER THE AGE OF 18. KEEP OUT OF REACH OF CHILDREN. If you are pregnant or nursing, consult your doctor before using this product. Individuals with known medical conditions and/or taking medication should consult a licensed physician and/or pharmacist before taking any nutritional supplements. Do not take in combination with MAO inhibitors. Do not use by persons with a history of malignant melanoma or if bipolar, pregnant, suspected to be pregnant or nursing. Tyrosine should not be taken by individuals with conditions associated with elevated dopamine levels, such as mania and schizophrenia. This supplement may increase sensitivity to the effects of CNS stimulants. Caution is advised when tyrosine is taken with stimulants and the dosage should be reduced accordingly.