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That phenylalanine is converted into tyrosine which is a precursor to dopamine and other neurotransmitters is exactly the reason why some people use phenylalanine as dietary supplement.
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http://www.asiatour.com/deutsch-thai/k/kurve.htm
Jan Garanoz
Juhu Tara Road, Juhu,
Mumbai - 400049 India
Last updated: October 02, 2010