Other ·Moderate evidence ·Reviewed May 2026
Organic sulfur compound for joint health and connective tissue support.
The bottom line
Evidence rating moderate. Most-documented uses: joint health, anti-inflammatory, skin/hair/nails. 16 sources indexed (2006–2023), with 5 interaction records on file.
Core mechanism
Provides bioavailable sulfur for collagen, keratin, and glutathione synthesis. Reduces inflammatory cytokines (IL-6, TNF-α) and inhibits NF-κB activation.5,7
Take with food; can split doses1,6
Dosing protocol
Often paired with glucosamine and chondroitin. Distinctive sulfurous taste.
Ranked by evidence and value.
Real-world pricing across three quality tiers. Assumes OptiMSM / MSM Powder.
Assumes 1,000-3,000 mg/day. Vendor basis: BulkSupplements powder, NOW/iHerb, Vitacost, and Amazon marketplace; OptiMSM capsules price higher. Updated 2026-05-28.
How much you'd eat to match a supplemental dose.
Food comparisons are indirect and much lower dose than supplements.
What to test, the optimal window inside the conventional range, and how long a response takes.
Methylsulfonylmethane (1500 to 3000 mg per day) modestly improves WOMAC scores and lowers IL-6 in osteoarthritis RCTs; effect on hsCRP is small.6,2
Often paired with glucosamine and chondroitin. Distinctive sulfurous taste and breath.
Where this appears in the symptom-to-supplement map, ranked by relevance.
MSM provides bioavailable sulfur used in connective tissue crosslinking and has modest anti-inflammatory signals, though connective tissue evidence is limited.2,5
Generally well tolerated; most joint research is in osteoarthritis rather than hypermobility specifically.
A sulfur donor with antioxidant and anti-inflammatory actions that has shown small improvements in osteoarthritis pain and function in short trials.4,1
Trials are short and small; often combined with glucosamine and chondroitin. Generally well tolerated.
MSM is used for sulfur support and joint comfort, though data are less robust than for omega-3s or curcumin.6,11
Usually taken consistently for several weeks.
MSM provides sulfur for connective tissue and has mild antioxidant and anti-inflammatory effects that may aid recovery comfort.10
Generally well tolerated, and often combined with glucosamine or chondroitin in joint products.
MSM is a sulfur donor with antioxidant and mild anti-inflammatory activity that may reduce joint pain, with limited spine-specific data.6,7
Often combined with glucosamine for joints; back-pain evidence is sparse, so set modest expectations.
MSM provides bioavailable sulfur and has antioxidant and mild anti inflammatory actions that may modestly reduce joint stiffness.2,5
Frequently combined with glucosamine; evidence is limited but it is generally well tolerated.
Evidence-based stacks that include it, with the exact dose and timing each one uses.
MSM supplies bioavailable sulfur used in collagen and glycosaminoglycan structure and is studied for joint comfort and exercise recovery. Effect sizes are modest and the connective tissue evidence is emerging.5,7
MSM and glucosamine are commonly combined for osteoarthritis, and some trials suggest the pair improves joint pain and function more than either alone, with a good tolerability profile.
Recommendation: Reasonable to combine for joint support. Monitor for mild gastrointestinal upset and continue only if you notice benefit over several weeks.
MSM and Boswellia work through complementary anti-inflammatory pathways and are often combined for joint and soft-tissue comfort, with some studies suggesting additive symptom relief.
Recommendation: Reasonable to combine for inflammatory joint support. Take with food and monitor for mild digestive upset.
MSM provides sulfur and antioxidant support that complements vitamin C's role in collagen synthesis, and the pair is frequently combined for connective-tissue and skin support without notable adverse interaction.
Recommendation: Safe to combine. No special timing or precautions are needed at typical supplement doses.
MSM supplies bioavailable sulfur that supports glycosaminoglycan and connective tissue synthesis, complementing hyaluronic acid for joint comfort and skin hydration.
Recommendation: Reasonable to combine in joint or skin protocols (for example oral hyaluronic acid 80 to 200mg with MSM 1 to 3g daily). No timing restriction needed.
This is a mechanistically grounded but largely theoretical absorption-competition concern. The molybdate versus sulfate competition for a shared intestinal transporter is well established in animal and cell studies, and MSM contributes to the sulfate pool. However, MSM is taken up by the small intestine in a high-capacity manner and is converted to sulfate mostly after absorption, so its direct dampening of molybdenum uptake in the gut is expected to be small, and no human study has measured an MSM effect on molybdenum status specifically. Note that added sulfate, if anything, lowers molybdenum exposure, so this is not a safety concern.
Recommendation: For most people no action is needed. If you take both and want to be conservative, especially if molybdenum is being used deliberately to correct a documented deficiency, separate them by about 2 to 3 hours by taking molybdenum on its own (for example with a different meal) rather than together with a large MSM dose (commonly 1.5 to 3 g or more). Keep molybdenum within the normal 45 to 150 mcg/day range. No separation is needed simply for safety.
Numbered references. Citations throughout the page link here.
Stuber K, Sajko S, Kristmanson K. Efficacy of glucosamine, chondroitin, and methylsulfonylmethane for spinal degenerative joint disease and degenerative disc disease: a systematic review. The Journal of the Canadian Chiropractic Association. 2011
Brien S, Prescott P, Lewith G. Meta-analysis of the related nutritional supplements dimethyl sulfoxide and methylsulfonylmethane in the treatment of osteoarthritis of the knee. Evidence-based complementary and alternative medicine : eCAM. 2011
Brien S, Prescott P, Bashir N et al.. Systematic review of the nutritional supplements dimethyl sulfoxide (DMSO) and methylsulfonylmethane (MSM) in the treatment of osteoarthritis. Osteoarthritis and cartilage. 2008
A combination supplement containing MSM, undenatured type II collagen, and boswellic acids showed comparable or superior efficacy to glucosamine/chondroitin for knee osteoarthritis symptoms.
Combined glucosamine, chondroitin sulfate, and MSM supplementation improved pain scores and maximum mouth opening in patients with TMJ osteoarthritis compared to controls.
Oral MSM improved signs of skin aging in human subjects, supporting its use for skin health as a nutritional supplement.
Guaitolini E, Cavezzi A, Cocchi S et al.. Randomized, Placebo-controlled Study of a Nutraceutical Based on Hyaluronic Acid, L-carnosine, and Methylsulfonylmethane in Facial Skin Aesthetics and Well-being. The Journal of clinical and aesthetic dermatology. 2019
Hewlings S, Kalman DS. Evaluating the Impacts of Methylsulfonylmethane on Allergic Rhinitis After a Standard Allergen Challenge: Randomized Double-Blind Exploratory Study. JMIR research protocols. 2018
MSM decreased resting proinflammatory cytokines and increased acute post-exercise IL-10, dampening the inflammatory response to exercise.
MSM group saw clinically significant reductions in both muscle and joint pain following a half-marathon.
Lubis AMT, Siagian C, Wonggokusuma E et al.. Comparison of Glucosamine-Chondroitin Sulfate with and without Methylsulfonylmethane in Grade I-II Knee Osteoarthritis: A Double Blind Randomized Controlled Trial. Acta medica Indonesiana. 2017
MSM for 12 weeks improved pain and physical function in knee OA patients, though improvements were small.
MSM (3 g twice daily) improved symptoms of pain and physical function during 12-week intervention without major adverse events.
As a GRAS-approved substance, MSM is well-tolerated at dosages up to 4 g daily with few known and mild side effects.
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