For use in horses only. Recommended to support healthy joints and enhance flexibility. Helps support structural integrity of joints, connective tissue, and maintain cartilage while relieving occasional joint stiffness. GLC 5500 is 100% Pure Powder Concentrate. Formulated, patented, and clinically proven to be more than twice as effective at delivering key ingredients - Glucosamine & Chondroitin. Active Ingredients per 6.59 g Scoop GLC Formula Glucosamine Sulfate (as Glucosamine Sulfate Sodium Salt and as Glucosamine Sulfate Potassium Salt)... (shellfish) 2,400 mg Glucosamine HCl...(shellfish) 1,200 mg Chondroitin Sulfate...(bovine) 1,080 mg N-Acetyl-D-Glucosamine...(shellfish) 300 mg Sodium Ascorbate 300 mg Manganese (as Manganese Sulfate) 10 mg No Inactive Ingredients Gluten Free. Dairy Free. Contains: Shellfish (crab, lobster &/or shrimp).