Synolis is an intra-articular solution designed to treat symptoms of osteoarthritis, particularly in the knee and hip joints synolis.com+1. It is a visco-supplement that mimics the natural properties of synovial fluid, which lubricates and cushions joints during movement mdbiologix.com. The formulation combines hyaluronic acid, a natural joint lubricant, with sorbitol, which enhances the stability and effectiveness of the injection