Now L-Phenylalanine 500 mg Veg Capsules, Nervous System Support, 120 ct 3 lb Contains caffeine

Contains caffeine

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L-Theanine may also support healthy vascular function through this relaxing effect

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Now L-Phenylalanine 500 mg Veg Capsules, Nervous System Support, 120 ct 3 lb Contains caffeineL Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins. Because L Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmittters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.