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Home : Ingredients Listing >> Phenylalanine Supplements :

What is Phenylalanine?



L-Phenylalanine is one of nine essential amino acids that must be obtained from the diet. Main sources of this compound come from meat, fish, eggs, cheese and milk. Unique because it is neither synthesized nor oxidized in muscle tissue, its metabolic status has made it a key amino acid target for kinetic metabolic studies using stable isotope tracers.  Inborn metabolic errors can result in PKU where people don’t have enzymes to break down phenylalanine, thus dietary intake needs to be closely monitored.  When looked upon as part of the essential amino acids, phenylalanine plays a critical role in stimulating muscle protein synthesis and as a non-preferred fuel source during prolonged aerobic exercise.


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