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.