Tryptophan is an amino acid that is used in the production of proteins in our body. We find tryptophan in a number of our daily foods, such as milk, nuts, poultry, eggs, spinach, and salmon to name a few. Our body uses and converts tryptophan to niacin, which is vitamin B, and it has an essential role in the chemical process that make serotonin. Serotonin is a chemical precursor to melatonin that is directly linked with quality and healthy sleep.
All of these processes occur in the pineal gland.