Yes. Rosehips are known to be one of nature’s richest sources of natural vitamin C. The patented processes used to manufacture Rose-Hip Vital Canine maintain the integrity of the natural vitamins and minerals found in the Rosehip. The vitamin C in Rose-Hip Vital is 100% natural and therefore absorbed more effectively then synthetic vitamin C. 2.5g of Rose-Hip Vital powder contains 12.5mg of natural vitamin C.