Jarrow Formulas N-Acetyl Tyrosine is an acetylated derivative of the amino acid L-tyrosine. Acetylation enhances the solubility and stability of certain amino acids. N-Acetyl Tyrosine supports brain function by supporting the synthesis of the catecholamines norepinephrine and dopamine (neurotransmitters).(1) Jarrow Formulas N-Acetyl Tyrosine also includes vitamin B6 essential for amino acid metabolism and neurotransmitter synthesis.(1) This amino acid supplement for adults is non-GMO and free of wheat, gluten, soybeans, dairy, egg, fish, shellfish, peanuts, tree nuts and sesame. Adults take one capsule one or two times per day, preferably with juice on an empty stomach or as directed by your qualified healthcare professional. Jarrow Formulas – Superior Science. Smarter Formulas. (1)These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.