Med-Vet Pharmaceuticals SENIOR FLEX H/A(Pellet) SENIOR FLEX H/A is a unique combination of support for the senior horse! It is recommended to help support healthy joint function. ACTIVE INGREDIENTS: (PER OZ) Glucosamine Sulfate 5,000 mg Chondroitin Sulfate 500 mg Hyaluronic Acid 50 mg MSM 5,000 mg Ester-C(R) 1,200 mg Yucca Schidigera Extract 5,500 mg Vitamin A 15,000 IU Vitamin D 5,000 IU Vitamine E 1,000 IU Direct Fed Microbials 9.3 million CFU's DIRECTIONS FOR USE (Adult Horses 900-1,100 lbs): Provide 1 oz. twice daily for high stress levels and/or working conditions. For lower maintenance levels provide 1/2 measure daily. This level may be doubled for the first 14-21 days.