Question: what is the difference between l-tyrosine and n-acetyl tyrosine?
Answer: Tyrosine is a nonessential amino acid used to make the catecholamine neurotransmitters dopamine (DA), norepinephrine (NE), and epinephrine (E). N-Acetyl Tyrosine (NAT) is the amino acid tyrosine bonded to an acetyl group. The acetyl group must be removed from NAT to form tyrosine and become active in the body.