5-HTP 200mg Time Release has a delivery system that releases 5-HTP slowly and then steadily over a period of time. 5-HTP is a drug-free, amino acid derived from plant that naturally increases the body's level of serotonin, the chemical messenger that affects emotions, behavior, appetite, thought and sleep. Today's stress filled lifestyles and dietary practices may negatively affect how the body handles serotonin. Regular use of 5-HTP 200mg Time Release helps promote a more positive outlook and greater appetite control.