Metagenics Glucosamine Sulfate is a dietary supplement for joint health support. Proteoglycans are important parts of the substance making up connective tissue and glucosamine is a naturally occurring precursor for proteoglycan synthesis. Glucosamine provides support for healthy joints and other connective tissues as well as joint maintenance. Recommended use: Take three tablets daily between meals or as directed by a healthcare professional.Metagenics Glucosamine Sulfate Facts: 3 tablets contain: Vitamin C (as ascorbic acid) 90 mg Potassium (from glucosamine sulfate potassium chloride) 240 mg D-Glucosamine Sulfate (as glucosamine sulfate potassium chloride) 1.5g Other Ingredients: Glucosamine sulfate potassium chloride [crustacean shellfish (crab shells, shrimp)], microcrystalline cellulose, cellulose, ascorbic acid, stearic acid (vegetable), silica, and coating (hypromellose, mediumchain triglycerides, and hydroxypropylcellulose). Contains: Crustacean shellfish (crab shells, shrimp).