– Features rose hips for added antioxidant support. – Immune system support. – Helps neutralize free radicals in the body. Swanson Premium Vitamin C with Rose Hips is an antioxidant boosting formula. With the help of rose hips, vitamin C works to protect the body against free-radicals. Rose hips also have bioflavonoids that promote the vitamin’s absorption. Each tablet delivers 1,000 mg of vitamin C and 100 mg of rose hips.