N-Acetyl-L-Tyrosine is the amino acid L-Tyrosine with an acetic acid added to it. By adding acetic acid to L-tyrosine it allows it to be absorbed easier, making (NALT) superior compared to L-tyrosine alone. N-Acetyl-L-Tyrosine energy and focus enhancing benefits come largely from its ability to raise levels of a neurotransmitter known as dopamine. High dopamine levels help to increase levels of Norepinephrine.(35) Norepinephrine increases alertness, enhances memory, and focus in the brain.(36)