Source Naturals, L Phenylalanine, 500mg, 100 ct Seasonal Cold Support Its popularity is attributed to

Its popularity is attributed to the active constituent

Vitamin E (as vitamin E succinate) - 100 IU

This makes them especially important for body builders and other athletes in sports that demand explosive strength

Bioflavonoid Complex - 25 mg

Taurine - 100 mg

Source Naturals, L Phenylalanine, 500mg, 100 ct Seasonal Cold Support Its popularity is attributed toL Phenylalanine, an essential amino acid, is a predecessor of the amino acid tyrosine and a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes ultimately converts to a key neurotransmitter. L Phenylalanine is also a direct predecessor of PEA (Phenylethylamine), another important neurotransmitter. Packaging 100 tabs Suggested Use 1 to 2 tablets daily. Ingredients Calcium 99 mg L Phenylalanine 1 g