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 supports 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 studies⁰
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