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In rare cases, users have reported increased energy levels or restlessness, which may be attributed to the compounds influence on systemic healing processes or neurotransmitter activity
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The conversion into tyrosine is tightly regulated by the enzyme phenylalanine hydroxylase (PAH), an enzyme that requires tetrahydrobiopterin (BH 4 ) as a cofactor, and molecular dioxygen as a substrate (Kaufman, 1958
