Specialty Supplements Glucosamine and Chondroitin Sulfate in Their Ideal Ratio Dietary Supplement Certified Gluten-Free GMP Certified (Good Manufacturing Practices) Glucosamine/Chondroitin Formula provides the necessary building blocks to support healthy joints. This synergistic complex provides the precursors for the maintenance of healthy bone, cartilage, tendon, joint tissue, skin, blood vessel walls and mucous membranes. This product has been manufactured at an NSF GMP Registered facility.