Wednesday, March 7, 2012

Tyrosine

An amino acid that transmits nerve impulses to the brain. It is present in meat, dairy, fish and grains.

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A white crystalline nitrogenous substance present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, -- as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and amidopropionic acid, and by decomposition yields oxybenzoic acid, or some other benzol derivative. [Written also {tyrosine}.]

An amino acid found in most proteins, a precursor of several hormones.

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Tyrosine is manufactured by phenylalanine. It can be obtained in small quantities from foods such as seafood, pultry, nuts, seeds, dairy products, bananas, avacados and lima beans.  It plays a critical role in the ability of the brain to pay attention. 

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Tyrosine is LIKELY SAFE in food amounts and POSSIBLY SAFE when taken by adults short-term in medicinal amounts or applied to the skin. Tyrosine seems to be safe when used in doses up to 150 mg/kg per day for up to 3 months. Some people experience side effects such as nausea, headache, fatigue, heartburn, and joint pain.

Pregnancy and breast-feeding: Not enough is known about the safety of using tyrosine during pregnancy and breast-feeding. Stay on the safe side and avoid use.
Can also worsen Thyroid and Graves issues. 

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