New FLUID ACTION® HA provides the same great benefits as original Fluid Action® with Sodium Hyaluronate (HA) added for extra support in preserving healthy joints. Sodium Hyaluronate, or Hyaluronic Acid, improves joint function by lubricating joints and helping to maintain structural integrity. It also increases the viscosity level of the synovial fluid in joints. In addition, FLUID ACTION® HA contains Glucosamine, Yucca, MSM, Vitamin C, and many other beneficial ingredients. FLUID ACTION® HA contains no pain relievers. Some other products contain ingredients for temporary pain relief that do not address the true cause of the problem. In fact, many of these pain relievers can actually make the trouble worse by breaking down cartilage. This is why FLUID ACTION® products work on the cause of the joint problem and not just the symptoms.