Tyrosine and Tryptophan | Noshing for Neural Health Posted on January 26, 2023January 26, 2023 By CRPScontender No Comments on Tyrosine and Tryptophan | Noshing for Neural Health Video Introduction to the amino acids tyrosine and tryptophan. These amino acids are the precursors to the neurotransmitters dopamine, noradrenaline, adrenaline, and serotonin. A video essay.