Dietary supplement. TwinLab Mega L-Glutathione Caps are easier to swallow and assimilate. They also contain no borders, coatings or colorings. Free of the most common allergens such as corn, soy, yeast, rice, barley, wheat, lactose (milk sugar), and all milk, citrus, fish and egg products. No added sugars, salt, colorings or preservatives. Packaged in a glass bottle for maximum stability, quality and freshness. This product is manufactured at our own state of the art facility.