This amino acid contains the highest quality tyrosine. L-Tyrosine is an amino acid which is essential for the formation of dopamine, adrenaline, noradrenaline and thyroid hormones T3 and T4. L-tyrosine can positively affect the levels of thyroid hormone, which can lead to an increase in body metabolism. L-tyrosine has proven to reduce stress and also assisting during fatigue syndromes. L-tyrosine exists in relatively small amounts in food, regardless of source of protein, it can during a tough diet and physical and mental stress, be extra easy to get a deficit of l-tyrosine. In those circumstances, the body consumes l-tyrosine significantly faster than normal because it is formed and consumed large amounts of adrenaline. Lack of l-tyrosine can be characterized by, among other things, mental fatigue and weight gain, though the body can’t produce these vital hormones anymore. Refreshing and fat burning, ideal prior workout. Powder solution.