Vetpro 3 Horses Flex-Equine Plus is a nutriceutical (100% natural) supplement formulated for feeding to horses with impaired joint function. It helps to maintain cartilage elasticity and aids in the repair of damaged cartilage. It is an improved development of Flex Equine as it also contains Undenatured Collagen Type ll, which has been scientifically proven to increase the already established benefits of our formula with Glucosamine, mixed Glycosaminoglycans (Chondroitin), Manganese Ascorbate, Copper Chelate, Zinc Chelate and Gelatin.