Doctor's Best Best D-Phenylalanine
Necessary For Protein Synthesis & Production Of Neurotransmitters!D-phenylalanine is a non-protein amino acid related to the essential amino acid L-phenylalanine. D- and L-phenylalanine are structural mirror images of each other. A small amount of D-phenylalanine may be converted to L-phenylalanine in the body.
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