DONA® is the original Crystalline Glucosamine Sulfate that has been shown effective in two 3-year controlled clinical studies. DONA helps maintain the normal function of cartilage and support healthy joint function, mobility and flexibility. Healthy cartilage allows you to keep doing the activities you love, such as walking, climbing stairs, swimming, running, and even the simple joy of picking up your child or grandchild.

DONA® has been shown effective in two 3-year controlled clinical studies

• Helps maintain the normal function of cartilage
• Supports healthy joint function
• Supports joint mobility and flexibility
• Clinical strength