Dietary Supplement. Guaranteed No Added: eggs, fish, wheat, crustacean shellfish, tree nuts or peanuts. Niacin 500 mg (niacinamide). May support nervous system and heart health. Est. 1967. Mason laboratory tested guarantee. Niacinamide does not cause flushing. Certified good manufacturing practice. www.MasonVitamins.com. (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.)