Life Extension L-Tryptophan, 500mg, 90 Vcaps

Serotonin  - is a neurotransmitter in the brain associated with positive moods and restful sleep.

To produce and maintain optimum serotonin levels, your body requires tryptophan, an essential amino acid the body can’t produce.39

In the body, tryptophan has been shown to:

• Improve sleep
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• Enhance mood
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• Modulate stress
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The basis for this formula is premium L-tryptophan, which has undergone significantly more rigorous manufacturing processes than regular tryptophan material to assure the highest purity and safety.

Life Extension's mission is simply to help you live a healthier, longer life. They are at the forefront of medical research, constantly looking for ways to prolong youth, health, and life. They have been at it for more than 34 years, investing more than $140 million to find therapies and technologies that could lead to lifesaving cures for the diseases of aging.

Life Extension insists on purchasing only the highest quality raw materials from all over the world, primarily from leading US, Japanese and European sources. They go one step further by using advanced analytical methods, such as high-performance liquid chromatography and gas chromatography/mass spectrometry, to ensure Their products meet label claims for potency and purity. Life Extension tests its raw materials using US Pharmacopeia and other exacting pharmaceutical assay standard.