Natrol 5-HTP Description: Promotes Positive Mood Helps Control Appetite Naturally Drug Free Natrol 5-HTP is a drug-free plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that affects emotions, behavior, appetite, thought and sleep. Regular use of Natrol 5-HTP helps provide a more positive outlook, and promotes relaxation, calm and greater appetite control. Free Of Yeast, wheat, corn, milk, egg, soy, glutens, artificial colors and flavors, added sugar, starch, and preservatives. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.