For Stiff Joints. Equex is a high-powered joint supplement that combines all the relative joint enhancement substances into one, easy to feed, liquid supplement. Pharmaceutical grade Glucosamine HCl, Chondroitin Sulfate and MSM are provided in maximum potency, along with Vitamin C, Shark Cartilage, Hyaluronic Acid, and Bromelain (a special enzyme which increases absorption of nutrients and helps hydrolyze.