Mood Relaxation Sleep. The essential amino acid L-tryptophan helps support relaxation restful sleep and feeling better. It plays a part in the synthesis of both melatonin and serotonin hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body's precursor to the kynurenines that regulate immunity. If needed L-tryptophan converts to niacin in the body which supports circulation a healthy nervous system the metabolism of food and the production of hydrochloric acid for the digestive system. Source Naturals L-TRYPTOPHAN is extremely pure and is regularly tested to ensure the highest standards of quality.
"I work for an airline and travel worldwide. Between menopause, jet- lag, sheer exhaustion, this is the supreme, non addicting, natural sleep aid I have ever tried....after 30 yrs I have tried everything and don't want to dependent on any drug. Tryptophan works wonders and I especially endorse Source Naturals even if they are pricier. sweet dreams!"