Life Extension L-Tryptophan - 500mg - 90 vcaps

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Our L-tryptophan has undergone rigorous manufacturing processes to ensure the highest quality and purity. Serotonin is a neurotransmitter in the brain associated with positive mood s and restful sleep. Your body requires the essential amino acid tryptophan to produce and maintain healthy serotonin levels. But your body cannot make tryptophan on its own. Show more