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An essential amino acid, L-Tryptophan increases brain levels of serotonin, a calming neurotransmitter, and melatonin, which helps induce sleep. It's an amino acid the body does not produce, so the only way to get it is through diet and/or supplementation.
ProHealth's L-Tryptophan is Pharmaceutical Grade (USP) and has been thoroughly tested to be free of any Peak E or microbial contaminants, so you can include it in your supplementation program with confidence!
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4.4
4.1
