L-Tyrosine

L-Tyrosine, an amino acid originally isolated from cheese, plays an important role in brain chemistry. Tyrosine is used by the body to produce important neurotransmitters. Among these neurotransmitters are dopamine, noradrenaline, and the well known adrenaline. These three compounds function in mediating aspects of mood, alertness, general arousal and the physiological responses to stress. Tyrosine can increase levels of these neurochemicals, resulting in improved stamina, will power and pleasure. Increased levels of tyrosine enable and encourage the body to produce and release these mood enhancing chemicals.

As a testament to the effectiveness of tyrosine, several energy drink manufacturers include tyrosine in their products. Benefits of tyrosine in energy drinks include allowing the body to easily replenish brain chemicals released by caffeine, reducing the crash effect brought about by noradrenaline and dopamine depletion, as well as increasing the stimulant effect. There is a body of scientific evidence supporting tyrosine's enhancement of the mind and body; and synergistic enhancement of the effects of stimulants. Tyrosine and caffeine are often "stacked" by body builders and athletes to enhance training. However, it is not recommended to combine tyrosine with stimulants such as caffeine except in reduced dosages of both, and until you understand how both substances independently affect you. Physiological risks of stimulants still apply, and in some cases may be increased. It is important to know your body and mind.

Although your body produces tyrosine from phenylalanine, making it a non-essential amino acid, tyrosine is a more direct precursor to the neurotransmitters. Tyrosine, therefore has a more specific effect than phenylalanine in mediating high performance mental characteristics. It is possible that combining phenylalanine with tyrosine could offer a time release effect, tyrosine being converted into neurotransmitters while phenylalanine is converted into tyrosine.

In short, tyrosine is a great start for a person looking for a way of enhancing mental stamina and mood without the use of drugs. Other brain-boosting amino acids include tryptophan and the related 5-HTP, GABA and phenylalanine. Dosages of L-tyrosine range from 500mg to 4 grams daily, with 1 gram being approximately half a teaspoon.

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