Naturally occurring 20 amino acids. They perform many valuable and key roles in the human body. One of these is tryptophan. It is classified as an essential amino acid, i.e. an amino acid that our body cannot produce on its own and must be supplied with food. The active form is the molecule with the L-configuration, i.e. L-tryptophan.

In this configuration it can be found in the dietary supplement Zein Pharma - L-Tryptophan. Its sources are products of both plant and animal origin. Most tryptophan is found in seeds: pumpkin seeds, sunflower seeds, sesame seeds, chia seeds, linseed, bananas, cocoa, eggs, yellow cheese and meat. Once ingested, it is very easily absorbed from the gastrointestinal tract.