MSM is an organic sulfur compound found naturally in fruits, vegetables, and grains. Our research shows moderate evidence for knee osteoarthritis pain reduction — a meta-analysis found it decreased pain by 0.74 points on a 10-point VAS scale at doses of 1,500-6,000mg/day. It's also widely used for joint health, exercise recovery, and seasonal allergies. Safety profile is excellent — it's one of the most well-tolerated joint supplements, with toxicity studies showing no adverse effects even at very high doses. The evidence isn't strong enough to call it a standalone joint solution, but as an adjunct, the risk-benefit is favorable.
MSM provides bioavailable sulfur — an essential element for connective tissue integrity. Sulfur is needed for: (1) disulfide bonds in collagen and keratin (structural proteins of cartilage, skin, hair, nails); (2) glutathione synthesis (the body's master antioxidant); (3) sulfation reactions that are critical for joint glycosaminoglycan (GAG) production. MSM also has direct anti-inflammatory activity by inhibiting NF-κB and reducing inflammatory cytokines (IL-1, IL-6, TNF-α), which explains the pain reduction beyond simple structural support.
No significant drug interactions have been identified in clinical literature. MSM is a simple sulfur-containing compound with no known pharmacological interactions. However, as with any supplement, inform your healthcare provider before combining with prescription medications.
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.