Solgar Vitamin C 1000mg with Rose Hips (100). Vitamin C is a water-soluble vitamin, sourced from natural ingredients such as rose hips and acerola. Rose hips contain bioflavonoids which naturally occur with vitamin C in nature.. Bioflavonoids help to enhance the absorption and bioavailability so make sure you will receive all the benefits form Vitamin C.. Vitamin C is an essential, water-soluble vitamin that is only stored in the body in small amounts. This vitamin helps fight free radicals. Free radicals can lead to oxidative stress and the premature aging of cells. Vitamin C also help maintain a healthy immune system and has multiple benefits to help to reach optimal health