L-Tyrosine Supplements

About L-Tyrosine Supplements

Tyrosine supplements may be used to support a range of body systems, such as the thyroid gland, adrenal glands and brain health. L-Tyrosine is a conditionally essential amino acid that cannot be produced adequately under certain physiological conditions. Tyrosine is synthesized from an essential amino acid called L-Phenylalanine.

Tyrosine is required for the synthesis of L-Dopa, Dopamine, Noradrenaline and Adrenaline (in that specific order). These are important hormones and neurotransmitters that keep us alert, alive and feeling content. Low iron levels can adversely impact the L-Tyrosine synthesis, as can folate (5-MTHF). Iron is required by the enzyme responsible for the chemical conversion of phenylalanine to tyrosine.

Under what conditions does physiological tyrosine demand exceed biological synthesis? Though scientific research is still being conducted in this area, chronic stress may be indicated. Whether it be mental, physical or emotional stress, a high sympathetic nervous system tone over an extended period of time may reduce concentrations in the body.

Examples of physical stress include regular intesnse bouts of heavy weight lifting or working long hours as a labourer. Tyrosine supplementation may be useful for depression or addictions, as it is a precursor to dopamine, noradrenaline and adrenaline, all of which may assist with mood and level of satisfaction. 

L-Tyrosine is used as a building block for melanin, the natural pigment in skin. Does tyrosine supplementation make it easier to get a sun tan? This is yet to be investigated! Tyrosine is required for thyroid hormone synthesis. In fact, given that there are so many tyrosine residues found in the molecular structure of the thyroid hormones, there may be a place for supporting thyroid hormone synthesis with tyrosine when levels are low.

L-tyrosine is best taken on an empty stomach, though it can be mixed into pre-workout drinks before exercise. Given that tyrosine is used for the synthesis of adrenal hormones, this amino acid is often prescribed for individuals said to be adrenally exhausted. In this way, the amino acid may support the synthesis of adrenaline and noradrenaline. Tyrosine is a white and relatively tasteless powder that mixes well with water, making it an easy supplement to drink.