Glucosamine QCV is a unique formula developed by LAMBERTS® that provides a total of 929 mg of glucosamine sulfate 2KCl, with the added benefit of apple cider vinegar and quercetin. Apple cider vinegar has been used for centuries for numerous applications, including joint care, and this product contains an amount equivalent to one teaspoon of apple cider vinegar per tablet. Quercetin is a bioflavonoid found naturally in fruits and vegetables, particularly onions and apples, and is one of the few bioflavonoids that has been used in human studies. This antioxidant, discovered in 1854 by J. Rigaud, may also be involved in inhibiting the production and release of histamines. We've added a pure source of quercetin, at a level equivalent to that found in four apples. - High concentration glucosamine sulfate. - With quercetin, a magnificent antioxidant. - Apple cider vinegar, a very popular ingredient among consumers. Glucosamine is essential for maintaining healthy cartilage, the soft tissue that lines the joints. LAMBERTS® Glucosamine Sulfate has become one of the most popular products due to its well-designed formulation (based on the results of rigorous clinical studies) and its low price. Directions: Take 1 tablet with food. No more than 2 daily. Do not exceed the expressly recommended daily dose.