Windmill's 5-HTP 100 mg is a drug-free plant derived source of an amino acid that naturally increases the body's level of serotonin, an important substance for normal nerve and brain function. Serotonin plays a significant role in maintaining a positive mood.*

All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Practices) are independently verified by qualified certification organizations.

Free of artificial colors, flavors and preservatives. Windmill is a trusted name that has been providing America with quality supplements for over 40 years.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.