Contains key substances found to work together to help support the horse s natural ability to produce joint lubricating synovial fluid, which is responsible for repairing and strengthening the damage that stress creates in performance horses. Ester C is key to optimizing bioavailability of the other ingredients and is an essential antioxidant. Boswellia serrata is an all-natural herb derived from tree gum resin that acts as an anti-inflammatory. Each Liquid oz contains 8,000 mg glucosamine sulfate, 4,000 mg chondroitin sulfate, 3,000 mg MSM, 1,000 mg Ester C (ascorbic acid), 1,000 mg perna canaliculus, 150 mg yucca, 125 mg hyaluronic acid and 100 mg bioperine.