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 Production and utilization of hydrogen peroxide associated with melanogenesis and tyrosinasemediated oxidations of DOPA and dopamine Mastore 2005 The FEBS Journal Wiley Online Library Tyrosine Decarboxylase Worthington Enzyme Manual Worthington Biochemical The role of tyrosine hydroxylase dopamine pathway in Parkinson's disease pathogenesis Research Communities by Springer Nature Anti dityrosine(DT DY) monoclonal antibody: JaICA's OXIDATIVE STRESS MARKERS FOR PROTEIN OXIDATION Figure 2. [The tyrosine degradation pathway. Alkaptonuria]. GeneReviews NCBI Bookshelf