Thorne Vitamin C with Flavonoids 500mg + 75mg Bioflavonoids

Enhanced Immune Defense: Vitamin C plays a critical role in supporting multiple immune system functions, including the production and activity of white blood cells that defend against pathogens. The addition of citrus bioflavonoids—naturally occurring plant compounds including hesperidin, rutin, and quercetin—provides synergistic support by enhancing vitamin C's bioavailability and extending its antioxidant activity within immune cells, creating a more robust defense system than vitamin C alone.

Superior Collagen Production: As an essential cofactor in collagen synthesis, vitamin C enables the hydroxylation of proline and lysine amino acids, creating the stable triple-helix structure that forms connective tissue throughout your body. This biochemical process directly impacts skin elasticity and firmness, nail strength and growth, hair follicle health, and the structural integrity of blood vessels, making this formula particularly valuable for those focused on healthy aging, post-surgical recovery, or athletic tissue repair.

Advanced Antioxidant Protection: Vitamin C neutralizes harmful free radicals by donating electrons without becoming destabilizing itself, protecting cellular membranes, proteins, and DNA from oxidative damage. The citrus flavonoids amplify this protection by regenerating spent vitamin C molecules and providing additional antioxidant capacity, creating a powerful defense system against environmental stressors, pollution, and the oxidative stress generated during intense physical activity or metabolic processes.

Bioavailable Formulation Without Fillers: Thorne's pharmaceutical-grade ascorbic acid combined with whole-food citrus bioflavonoids mimics the natural composition found in oranges and other citrus fruits, optimizing absorption and cellular uptake. Unlike many vitamin C supplements that contain corn-derived ingredients, this clean formula uses hypromellose vegetarian capsules with minimal excipients—just silicon dioxide to prevent clumping—ensuring maximum nutrient density and making it suitable for those with corn sensitivities or seeking the purest supplementation possible.