What happens after you take L-Tryptophan? It’s an essential amino acid involved in the pathway that helps the body produce serotonin and melatonin — supporting mood, calm and the natural sleep-wake cycle. Discover NOKO L-Tryptophan Complex at getnoko.co.uk #LTryptophan #SleepSupport #Serotonin #Melatonin #NOKO