Maxi L Tryptophan 500™ is a supplemental source of l-tryptophan. What is l-tryptophan
It’s an essential amino acid your body needs to function properly. But you have to get tryptophan through your diet or supplements because your body can't make it. Tryptophan can support increased brain levels of both serotonins and melatonin. They enable a calm frame of mind and sleep respectively.