Source Naturals


Amino Acid


l-Tyrosine is a free-form amino acid which crosses the blood-brain barrier. It is a precursor for the motivational neurotransmitters dopamine, norepinephrine, and epinephrine, as well as for thyroid hormones and enkephalins, important peptides which ease messages of physical discomfort. l-Tyrosine is also a constituent of amino sugars (glycosaminoglycans), which play a role in numerous biological functions.



How To Use:

1/4 teaspoon daily, mixed with water or juice between meals.


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