How does Tryptophan work?
If you take Tryptophan tablet on empty stomach, it will help you fall asleep. However, when we eat regular meals high in Tryptophan, the Tryptophan has to compete with other amino acids (LNAA) to reach central nervous system (CNS) in the brain. When Tryptophan reaches CNS, it is converted into Serotonin that has calming effect, and Serotonin produces Melatonin, a sleep inducing hormone. Consumption of carbohydrates (specially simple carbohydrates such as Sugary desserts, White potatoes, Rice, and Maida) stimulate Pancreas to release insulin. Insulin helps LNAA to be taken up by muscle. This increases relative amount of Tryptophan in the blood so it can enter CNS.
