Production and utilization of hydrogen peroxide associated with melanogenesis and tyrosinasemediated oxidations of DOPA and dopamine Mastore 2005 The FEBS Journal Wiley Online Library L Tyrosine vs. Dextroamphetamine In a sleep deprivation study, L Tyrosine actually outperformed one of Adderall's active stimulants (dextroamphetamine) in key cognitive tests, like mathematical processing and logical reasoning, even after 30 hours with Noopept and Dihexa are the Top 2 UNDERRATED nootropic aids for ANYONE looking to improve their neurological functionality! We've used these individually and other times synergistically among certain cases that require big Figure 1 from Engineering of L tyrosine oxidation in Escherichia coli and microbial production of hydroxytyrosol. Semantic Scholar