L-Tyrosine is an essential amino acid which supports brain function. It can be converted by neurons in the brain into te neurotransmitters dopamine and norepinephrine (noradrenaline), hormones which are depleted by stress, excessive work and certain drugs. By replenishing norepinephrine in the brain, mental energy levels are enhanced and a feeling of contentment often occurs. L-tyrosine boosts certain neurotransmitters in the brain and has been used to support stress reduction and depression. L-Tyrosine is converted in the body into other key biologic compounds, including L-dopa, CoQ10, thyroid hormones and melanin.

Tyrosine can also enhance athletic performance. L-Tyrosine is an important component of protein and helps form the bioactive factors vital to cellular growth and maintenance. Tyrosine supplementation has the potential to increase athletic performance in a few ways. One of the mechanisms possibly contributing to fatigue during exercise is an increase in central serotonin levels and an increase in the ratio of serotonin to dopamine. Tyrosine may help decrease this ratio and compete with tryptophan (the amino acid precursor to serotonin) at the blood-brain barrier. Increased dopaminergic activity may decrease the perception of fatigue. Also, during highly stressful conditions, catecholamine levels can become depleted, and tyrosine may be particularly useful under these conditions.

The amino acid L-Tyrosine is a precursor for several substances made in the body including:

• neurotransmitters such as dopamine and norepinephrine
• melanins, the pigments largely responsible for skin and hair color
• thyroid hormones, such as thyroxine

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

Benefits of Alpha-Ketoglutarate (AKG) Amino Acids:

Amino Acid Alpha-Ketoglutarates are amino acids with an alpha-ketoglutaric acid (AKG) molecule attached. This AKG transport molecule helps the amino acid bypass the gut and enter the muscle cell directly giving you superior absorption. Unlike L- form amino acids, AKGs are shuttled directly to the muscle cells rather than being absorbed and used by the small intestines for nucleotide synthesis. AKG drives the amino acid into cells creating a pro-anabolic environment.

Amino acid alpha-ketoglutarates are technically amino acids derivatives. Their ergogenic effects are similar to those of their base free form amino acids, but by molecularly bonding it to AKG, its ergogenic effects become more pronounced within the muscle cell itself. The presence of the AKG molecule not only enhances the function of amino acid and overcomes its inherent limitations, but also increases its absorption rate thereby reducing the need for large doses, which may put less stress on the body. An added benefit is that AKG is a precursor to glutamine, so when the AKG is finished doing its job as a shuttle molecule it gets converted into glutamine. No waste - all benefit.

Suggested Usage:  As a dietary supplement, take 1 gram mixed in water or juice between meals 1 to 2 times daily, or as directed by your health care professional. If you experience stomach irritation, take with meals. Tyrosine ethyl ester is nontoxic and well-absorbed. This pure powdered form mixes well with juice or water. No daily Values have been established for glycine.

Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Warning: NOT INTENDED FOR USE BY PERSONS UNDER THE AGE OF 18. KEEP OUT OF THE REACH OF CHILDREN. If you are pregnant or breast feeding, consult your health care professional before using this product. People with known medical conditions and/or taking drugs should consult healthy adults only.

We guarantee our supplements to be the freshest and purest available:   This supplement contains absolutely NO additives, sweeteners or other fillers or agents that many manufacturers dilute their products with. NutraBio.com supplements are manufactured under the strictest standards producing the highest quality and purest supplements available anywhere. Our raw ingredients undergo state of the art HPLC analysis to insure zero tolerance for impurities and by-products. When it comes to price and quality you can't beat NutraBio.com. We guarantee it!

We guarantee our supplements to be the freshest and purest available:  This supplement contains absolutely NO additives, sweeteners or other fillers or agents that many manufacturers dilute their products with. NutraBio.com supplements are manufactured under the strictest standards producing the highest quality and purest supplements available anywhere. Our raw ingredients undergo state of the art HPLC analysis to insure zero tolerance for impurities and by-products. When it comes to price and quality you can't beat NutraBio.com. We guarantee it!

Purchase your supplements manufacturer direct at below wholesale price: Buy directly from the manufacturer and save. We cut out the middlemen and pass the savings on to you. With NutraBio.com you can buy your supplements at the same low wholesale price that the chain stores get. We've been around since 1996 and our only business has been the manufacture and supply of the highest quality nutritional supplements. We are a professional nutriceutical, FDA inspected facility which adheres to all FDA, FTC and NNFA labeling and manufacturing guidelines.

Important facts you should know about our supplements:

• HPLC laboratory tested for purity.
• Freshly manufactured - not expired or closeout.
• Spoon mixes with no gritty taste or residue.
• Backed by the NutraBio.com 30-day money back guarantee.
• Free of animal products, (except for gelatin capsule).

Certificate of Analysis Proves Quality & Freshness:  Always know the expiration date of a supplement before you purchase. If the manufacturer won't give you the expiration date and a Certificate of Analysis than beware. Many online venders sell expired or nearly expired products which they get on closeout from distributors who can no longer sell them to stores. NutraBio.com guarantees that this product is from the freshest and purest raw ingredients available and was packaged within the last two weeks. Click on the red "Purity & Freshness Seal" at the top of the page to view the actual Certificate of analysis.

FREE dosing scoop with your order: Get the exact dosage every time with a free single-dose scoop for pure powder orders. This scoop was designed by our lab to give you exactly one serving each time. No more measuring or guessing.