Use L-Tryptofaan to improve your mood or if you just want to feel bright and happy. Even catching sleep will be easier than ever before while using L-Tryptofaan especially when it is ingested with a glass of fruitjuice. L-Tryptofaan stimulates the brain to produce serotonin which makes the body feel more relaxed and calm. This way you will drift of to sleep much more easily. L-Tryptofaan is 100% natural and works almost directly after ingestion.