Chondroitin
Commonly used for
Joint HealthHealthy Aging
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The cheapest product is usually low quality, but more expensive doesn’t always mean better.
What is it? / Overview
Chondroitin sulfate is a structural component of cartilage. Evidence for reducing osteoarthritis pain is mixed, and guideline recommendations differ across professional bodies — some studies suggest possible effects on joint space narrowing, but this isn't established as a general product-class effect.
How is it used? / Administration
Form: Pharmaceutical-grade/high-purity chondroitin sulfate where possible, often combined with glucosamine
Typical dose studied: 800–1,200 mg/day
Timing: With food
Often derived from shellfish or bovine cartilage — check sourcing if allergic to shellfish. Not effective for acute injuries.
How well does it work? / Evidence
~ Moderate evidence
Who should avoid it?
Interacts with: Blood thinners (Warfarin)
Already taking it? Evaluate benefit after 2–3 months; often combined with glucosamine, and the combination has somewhat more consistent evidence than either alone.
Research & references
Wandel S et al. BMJ meta-analysis of glucosamine and chondroitin. Singh JA et al. Cochrane review of chondroitin for osteoarthritis.
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