Aids Memory* - Tryptophan can also be converted into niacin which is important for brain function and health. It's thought that tryptophan may help improve memory by increg levels of niacin in the brain.*. Mood Support - Tryptophan is an amino acid that helps produce serotonin and niacin (vitamin B3). Trytophan supplements, or new mood supplement, have been shown to help with mood support as it is a natural serotonin and dopamine supplements. Aids Sleep* - L-Tryptophan is the precursor to serotonin, a neurotransmitter that helps regulate your sleep cycle. It may aid in the management of stress, which can help support sleep.*.