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Source Naturals, L-Tyrosine, Free-Form Powder, 3.53 oz (100 g)
Amino Acid Supplement L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a precursor for the neurotransmitters dopamine, norepinephrine and epinephrine, as well as for thyroid hormones and enkephalins, special peptid| $2345 |  | |
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