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Saccharomyces cerevisiae
It is great for keeping natural born alertness and memory
Natural Flavor
to 14 1/2 - 16 1/2 inch
Free from parabens
Life Extension, L Tryptohan, 500 mg, 90 Vcaps VNS_Herbs Saccharomyces cerevisiaeProduct Description L Tryptophan formula helps maintain healthy tryptophan levels in the body. Tryptophan promotes healthy sleep and mood, encourages a healthy stress response and more. Serotonin is a neurotransmitter in the brain associated with positive moods and restful sleep. Requires the essential amino acid tryptophan to produce and maintain healthy serotonin levels. But your body cannot make tryptophan on its own. Product Benefits Sleep