Committed to crafting supplements that just work better, our formula provides 500 mg of vitamin C as ascorbic acid as well as 100 mg of our Vitamin C Support Base with sun-grown, natural sources rose hips and acerola cherry in each 1-VegCap serving. And for fast-acting, long-lasting support, our two-stage, timed-release formula is designed to release half of the ingredients rapidly and the other half gradually over a period of up to 12 hours. Now you can shine a little brighter, a little longer, with Solaray Vitamin C! INGREDIENTSVitamin C (as Ascorbic Acid), Vitamin C Support Base (Rose Hips, Acerola Cherry)