Tryptophan is an essential amino acid that is used in the biosynthesis of proteins. Some food sources that contain a significant amount of tryptophan include nuts, seeds, red meat, tofu, turkey, fish, and eggs. Tryptophan is a precursor of the neurotransmitters serotonin and melatonin . Serotonin is primarily found in the Central Nervous System and Gastrointestinal tract that is responsible for mood, appetite, digestion, sleep, memory, and sex drive by transmitting signals between neurons . Melatonin is responsible for light and dark cycles, regulating cortisol production, and immune system functions .
Where to Purchase
How to take
With a Meal on a Long-Term Basis
300-500 mg per serving
1. Murch, S., KrishnaRaj, S., & Saxena, P. (2000). Tryptophan is a precursor for melatonin and serotonin biosynthesis invitro regenerated St. John's wort (Hypericum perforatum L. cv. Anthos) plants. Plant Cell Reports, 19(7), 698-704
2. Mylecharane, E. J. (2013). Serotonin and the Australian connection: the science and the people. ACS chemical neuroscience, 4(1), 28-32.
3. Slominski, R. M., Reiter, R. J., Schlabritz-Loutsevitch, N., Ostrom, R. S., & Slominski, A. T. (2012). Melatonin membrane receptors in peripheral tissues: distribution and functions. Molecular and cellular endocrinology, 351(2), 152-166.