If you want to increase your serotonin level, the first thing that often comes to mind is the additional intake of L-tryptophan. Since tryptophane itself can only overcome the blood-brain barrier to a limited extent, this effect is usually limited. 5-Hydroxytryptophan, or 5-HTP for short, is the intermediate stage of tryptophan and serotonin. In contrast to tryptophane, 5-HTP can cross the blood-brain barrier without any problems and is directly converted to serotonin in the brain. In this blog post you will find out everything about the effect, dosage, side effects and important facts about 5-HTP.