The genetic dysfunction phenylketonuria (PKU) is the inability to metabolize phenylalanine due to a lack of the enzyme phenylalanine hydroxylase. People today using this type of dysfunction are generally known as "phenylketonurics" and ought to control their ingestion of phenylalanine. Phenibut is usually a synthetic by-product in the amino acid https://picamilonsupplement33109.mysticwiki.com/1004425/pyrazolam_for_dummies