Skip to main content
SupplementScience

Chondroitin Side Effects & Safety

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Safety Profile

Overall safety rating: Generally Safe

Potential Side Effects

  • Mild gastrointestinal symptoms (nausea, diarrhea, constipation) — infrequent
  • Headache (rare)
  • Skin rash (rare)
  • Generally very well tolerated with adverse event rates similar to placebo in large trials

Drug & Supplement Interactions

  • Warfarin and anticoagulants — structurally similar to heparin; may have mild anticoagulant effects; monitor INR
  • NSAIDs — may allow dose reduction of NSAIDs over time as OA symptoms improve

Maximum Dose

Do not exceed: Up to 1,200mg daily is well-studied; no significant benefit seen above this dose

Full Chondroitin Guide

References

  1. (). Long-term effects of chondroitins 4 and 6 sulfate on knee osteoarthritis: the study on osteoarthritis progression prevention, a two-year, randomized, double-blind, placebo-controlled trial. Arthritis & Rheumatism. DOI
  2. (). Pharmaceutical-grade chondroitin sulfate is as effective as celecoxib and superior to placebo in symptomatic knee osteoarthritis: the ChONdroitin versus CElecoxib versus Placebo Trial (CONCEPT). Annals of the Rheumatic Diseases. DOI
  3. (). Chondroitin for osteoarthritis. Cochrane Database of Systematic Reviews. DOI
  4. (). Glucosamine, chondroitin sulfate, and the two in combination for painful knee ostarthritis. New England Journal of Medicine. DOI