About this item Immune Support: Get the immune-supporting and antioxidant benefits of vitamin C combined with natural citrus flavonoids Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health Wound Healing: Collagen production, antioxidative properties, and immune support make vitamin C an important nutrient for supporting post-surgical healing and injury repair Free From: Doesn't contain gluten, eggs, tree nuts, peanuts, dairy, yeast, soy, fish, or shellfish Trusted: Thorne is chosen by champions and trusted by 100+ pro teams. Thorne is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is also a proud partner of 11 U.S. Olympic Teams