Source Naturals DLPA

l-Phenylalanine, or DLPA, is a 50/50 mixture of the d- and l- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its d- form). Features of Source Naturals DLPA Researchers believe DPA inhibits the action of an enzyme that breaks down endorphins and enkephalins DPA may extend the life of endorphins and enkephalins, and their positive influence on comfort levels LPA is the precursor to two  neurotransmitters that help support an alert state