Quest Glucosamine Sulfate Complex is a high-quality, high-potency supplement that offers a natural, safe, and scientifically validated support for individuals who suffer from the effects of aging joints. This support can be used on its own or as a complement to conventional medical therapy. Glucosamine sulfate (shellfish exoskeletons)...1500 mg Non-medicinal Ingredients: Cellulose, calcium phosphate dibasic, stearic acid, croscarmellose sodium, magnesium stearate, hyprolose, hypromellose, glycerin. Adults: Take 1 tablet daily. Use for a minimum of four weeks to see beneficial results.