Immune Support: Vitamin C formulated with natural citrus bioflavonoids for added antioxidant benefits resulting in better cellular protection against free radicals within the body* | Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health and supports healthy tissue and cartilage formation* | Detox Support: Promotes the body's natural ability to eliminate toxins and benefits liver health by helping increase glutathione and other potent antioxidants* | Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants | Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)