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It has been proven that phenylalanine converts into tyrosine, and that tyrosine is a precursor to dopamine, and that dopamine levels have a definite function in sexual desire.
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http://www.asiatour.com/deutsch-thai/k/kurzfristig.htm
Jan Garanoz
Juhu Tara Road, Juhu,
Mumbai - 400049 India
Last updated: October 02, 2010