Source Naturals L-Tryptophan, 60 Tablets
60 tablets · Tablets
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Price history
Best price so far: £12.76 at Iherb on 2 Sept 2026
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About this product
Dietary SupplementMood, Relaxation, Sleep500 mg Per Serving Non GMO ValidatedSuitable For VegetariansThe 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.