SANDERSON™ Ester-Plex® 1300mg is a very high strength, easy to swallow vitamin C which contains the same natural metabolites as our chewable product to ensure optimum bio-availability to the body, so that the vitamin C is absorbed better than ordinary vitamin C. The vitamin C in Ester-Plex®is also buffered to reduce the chance of gastric upset. Ester-Plex® 1300mg also contains the natural fruit co-factors rich in vitamin C including Acerola Cherry, Citrus Bioflavanoids, Rosehips and Camu Camu. Vitamin C is not made in the body and has to be taken in food or supplements. SANDERSON™ Ester-Plex® is a potent immune support, especially during winter; it is also an effective antioxidant, and may be beneficial as a support in recovery from injury or at times of stress when the need for vitamin C increases.