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Bonus Jul 13, 2017 Jul 14, 2017 May 29, 2017 Bonus Ratio: 1 share(s) for every 2 shares held Bonus Jul 11, 2013 Jul 13, 2013 May 22, 2013 Bonus Ratio: 1 share(s) for every 2 shares held Bonus Oct 01, ...

L-tyrosine is an amino acid that's often used in supplements to improve cognitive function affected by stress. Supplements containing L-tyrosine supplements may also help treat phenylketonuria (PKU).