Essential Amino Acid for Natural Sleep Enhancement and Stress Reduction. 500 MG. Serotonin is a neurotransmitter made in the brain from tryptophan. Serotonin has been associated with positive moods and restful sleep. To produce and maintain optimum serotonin levels your body requires tryptophan an essential amino acid which means that your body cannot produce it. In the body tryptophan has been shown to:. Improve sleep. Enhance mood. Modulate stress. Life Extension® offers L-Tryptophan Capsules to broadly and powerfully support tryptophan levels already within the normal range. . Life Extension®'s L-Tryptophan Capsules contain premium L-tryptophan which has undergone significantly more rigorous manufacturing processes than regular tryptophan material to assure the highest purity and safety.
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