This is an over the counter product - it does not require prescription.

The performance and mobility of your horse is dramatically affected by how well his joints function. While physical conditioning can strengthen muscles, bones, and tendons, the tremendous forces exerted on the skeletal joints (fetlock, knee, stifle and hock) during training and competition causes wear and tear to the joint cartilage. Articular cartilage is critical to joint utility. Immersed in synovial fluid, articular cartilage provides a smooth, low friction surface between bone ends, and transmits load forces to the underlying bones..