Siflex is a formula developed from the latest generation bioavailable Silicon with Glucosamine Sulfate, Chondroitin Sulfate, Marine Collagen and Methylsulfonylmethane (MSM), which favor the osteoarticular structure. It is a nutritional supplement for adults who want to promote their osteoarticular structure. How to use: Take 15 ml a day 10-15 minutes before food. Shake well before use.