Dietary Supplement. Gluten free. Guaranteed No Added: wheat, gluten, artificial colors and flavors. Est. 1967. May support healthy hair, skin & nails. Mason Guarantee: Laboratory tested. cGMP Certified: Certified Good Manufacturing Practice. www.MasonVitamins.com. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.)