iHerb Customer Reviews
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Posted by truevitality on Nov 12, 2012
L-Tyrosine,is a precursor to Dopamine a major neurotransmitter in the brain. Thorne is a brand I trust as it has no harmful excipients.
Posted by 5335608267849999773 on Sep 18, 2013
Thorne research is a good brand and tyrosine is like coffee for my add symptoms
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