Swanson Vitamins L-Tryptophan, 500 mg, 60 Capsules
60 capsules · Capsules
Prices across 1 retailer
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Price history
Best price so far: £11.96 at Iherb on 6 Sept 2026
It's at the cheapest we've seen in 90 days.
About this product
Sleep SupportDietary SupplementEncourages Healthy Sleep PatternsHelps Regulate the Body's Circadian RhythmSupports Healthy Serotonin LevelsHelps Combat Jet LagScience-Backed Quality Since 1969VeganGluten FreeDairy FreeNon-GMOLooking for effective sleep support? Swanson L-Tryptophan offers 500 mg of L-tryptophan per capsule to help support healthy serotonin levels and provide restful sleep. L-tryptophan, an essential amino acid, has to be obtained in the diet or in supplement form. Extensive lot tests indicate no Peak-E in this product.