Vitamin C is one of the most popular vitamins for immune health support, but it has other great benefits too.* Nature’s Way Extra Strength‡ Vitamin C with Bioflavonoids provides powerful antioxidant protection and is an important nutrient to support immune health.* It also strengthens collagen for healthy skin.* This extra strength formula ‡ is made with 1,000mg vitamin C per serving and contains bioflavonoids. This product is carefully tested and produced to superior quality standards.