This super-high potency glucosamine and chondroitin formula was designed with three things in mind – quality, convenience and reliability. By offering 1500 mg of glucosamine sulfate along with 1200 mg of chondroitin sulfate (min 90%) NOW Extra Strength Glucosamine/Chondroitin Sulfate is our strongest CGS supplement to date, and has quickly become one of our most popular joint support formulas.