Arth-Rx was formulated using the same ingredient used to decrease inflammation in racehorses’ legs. Stops pain by intercepting and stopping pain signals from being sent to the brain. Use this roll-on liquid as you begin your pre-game warm-ups, or for post-game pain relief. Arth-Rx is a non-greasy product designed for temporary relief from arthritis, sports injuries, muscle aches, joint pain, simple backaches.