Viartril-S is the Crystalline Glucosamine Sulfate. It is the original and only Glucosamine Sulfate that has been fully tested in clinical trials for safety and efficacy.Clinical studies and the world-wide clinical experience have shown that Viartril-S relieves the symptoms (pain and function limitation) of osteoarthritis. Recent, state-of-the-art clinical trials have also demonstrated that Viartril-S is the first compound that, when given for long-term treatment courses (i.e. at least 3 years), can decrease the progression of osteoarthritis. Glucosamine Sulphate 500mg per capsule (total 90 capsules) Reduce joint pain (Knee, Elbow, Ankle, Shoulder, Fingers) Reduce Stiffness in Joints. Take 1 capsule 3 times a day, or as directed by your doctor. To see best effect on your joint health, take for a minimum of 6 consecutive months