L-Tryptophan, 500mg – 180 caps

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High-purity tryptophan from natural, plant-based fermentation
Best vital substance of premium quality
100% vegan, certified with the vegan certification mark

The essential amino acid tryptophan serves as a precursor of the so-called “happiness hormone” serotonin, which together with melatonin is responsible for our sleep-wake rhythm, amongst other things.