Providing optimal levels of shell-fish free Glucosamine, also containing MSM with naturally occurring sulphur and non-animal derived hyaluronic acid, a substance that functions as a natural lubricant and cushion. Solaray With so much choice in today’s herbal supplements market, it’s important to know exactly what you’re buying. So Solaray go to great lengths to keep their products simple, natural, ethical and affordable. Solaray products are 100% natural. All the raw materials are tested for authenticity, potency, purity and safety. Plus, the final products undergo random sample testing to give you complete confidence.