This amino acid has been used as an appetite suppressant as it stimulates the production of cholecystokinin and as a mood enhancer as its d-type stimulates endorphins.  
This amino acid has been used as an appetite suppressant as it stimulates the production of cholecystokinin and as a mood enhancer as its d-type stimulates endorphins.  Metabolic pathways in the liver can convert it to norepinephrine, but more commonly it is converted by the enzyme PAH into tyrosine.  FTP, name this amino acid that, with aspartic acid, makes up NutraSweet and which can not be process properly in people with PKU, or phenylketonuria.
This amino acid has been used as an appetite suppressant as it stimulates the production of cholecystokinin and as a mood enhancer as its d-type stimulates endorphins.  
phenylalanine