L-Tryptophan is an essential amino acid found in many foods, such as eggs, dairy or chocolate, and is also part of the composition of food supplements for the formation of proteins that make up our body and uses our Brain in the manufacture of neurotransmitters such as serotonin. Serotonin intervenes in different processes, such as regulation of our mood, psychic performance or regulation of wakefulness. L-Tryptophan is indicated for the treatment, control, prevention, and improvement of the following diseases such as: depression, insomnia, anxiety, bloating, constipation and mood swings.