I have a very intense and psychologically hard work, so I almost always drink some anti-stress medications or dietary supplements. 5-HTP supplement liked. However, before I saw the 5-hydroxytryptophan another company at a dosage of 100 mg, so there is one capsule not enough for me. I drink 2 times a day - one in the morning, the second in the evening. It helps precisely because skipping technique at least once, immediately notice the growing irritation. I will order more.