MSM: benefits, dosage, contraindications

Mis à jour le

Methylsulfonylmethane (MSM) is a naturally occurring sulfur-containing compound found in a variety of green plants, algae, fruits, and vegetables. It plays a crucial role in the terrestrial sulfur cycle, which begins with the uptake of sulfate by algae and phytoplankton to produce dimethylsulfoniopropionate (DMSP). This DMSP is then converted into dimethyl sulfide (DMS), which is oxidized to form dimethyl sulfoxide (DMSO), of which MSM is a metabolite. MSM is odorless and is distinguished from DMSO by its ability to be produced synthetically via the oxidation of DMSO with hydrogen peroxide, followed by purification. In the human body, some ingested DMSO is converted into MSM, which plays a vital role in the synthesis of essential amino acids such as cysteine and methionine. MSM, as a sulfur donor, may depend on the existing microbiome: the collection of beneficial microorganisms that play a fundamental role in our body's sulfur cycle. Early research on MSM dates back to the 1970s at Oregon Health and Science University, where scientists discovered its potential benefits in improving skin quality and strengthening nails, as well as its use as a blood thinner. More recently, the scientific literature has suggested that MSM may be useful in treating arthritis and other inflammatory disorders, including interstitial cystitis, allergic rhinitis, and exercise-induced inflammation.

Scientific name(s)

Methylsulfonylmethane

Family or group: 

Minerals and trace elements


Indications

Scoring methodology

EFSA approval.

Several randomized, double-blind, controlled clinical trials (> 2), including a significant number of patients (>100), with consistently positive conclusions for the indication.
Several randomized, double-blind, controlled clinical trials (> 2), including a significant number of patients (>100), with positive conclusions for the indication.
One or more randomized studies, or several cohorts or epidemiological studies, with positive conclusions for the indication.
Clinical studies exist but are uncontrolled, with conclusions that may be positive or conflicting.
No clinical studies to date that can demonstrate the indication.


Arthritis
✪✪✪✪✪

Clinical research shows that taking 1.5 to 6 g of MSM orally in two or three divided doses per day, alone or in combination with glucosamine, can modestly improve joint function and certain symptoms of osteoarthritis such as pain and swelling. MSM has been studied in combination with other supplements. A clinical trial conducted in adults with knee osteoarthritis shows that daily intake of 500 mg of MSM, 1500 mg of glucosamine sulfate and 1200 mg of chondroitin sulfate for 12 weeks is associated with a greater reduction in pain and osteoarthritis scores compared with glucosamine sulfate and chondroitin sulfate alone. Clinical studies using combined products containing 5 g of MSM per day and 7.2 mg of boswellic acid per day, taken orally for 60 days, show reductions in the use of anti-inflammatory medications.

Posologie

posologieOrally

posologie500 - 6000 mg


Synergies


Wrinkles
✪✪✪✪✪

A study examined the effects of oral MSM supplementation on signs of skin aging. It consisted of two parts: a pilot study with 20 participants taking 3 g of MSM or a placebo per day for 16 weeks, and a dose-response study with 63 participants taking 1 g or 3 g of MSM per day for the same period. The results showed significant improvements in signs of skin aging, including a reduction in facial wrinkles and improvements in skin firmness, elasticity, and hydration with both doses of MSM. The study suggests that a low dose of 1 g/day of MSM can effectively reduce visible signs of skin aging.

Posologie

posologieOral administration

posologie1000 - 3000 mg

formulationOptiMSM


Sports performance
✪✪✪✪✪

Intense, prolonged exercise can lead to muscle pain caused by microtrauma to the muscles and surrounding connective tissue, triggering a local inflammatory response. MSM is considered an effective agent against muscle pain because of its anti-inflammatory effects and its potential to provide sulfur to connective tissue. MSM supplementation has been shown to reduce endurance exercise-induced muscle damage, as demonstrated in a small study. Pretreatment with MSM reduced muscle soreness after fatiguing resistance exercises and endurance exercise.

Posologie

posologieOral administration

posologie2500 mg


Skin health
✪✪✪✪✪

Since 1981, MSM has been suggested to have therapeutic uses for improving skin quality. nnClinical research in patients with rosacea shows that topical application of a cream containing silymarin and MSM twice daily for one month improves skin redness, papules, itching, hydration, and skin tone compared with baseline.nnIn a case study, a 44-year-old man with X-linked ichthyosis, a severe skin condition, experienced a notable improvement in his symptoms after four weeks of using a moisturizing topical cream. This cream contained a blend of amino acids, vitamins, antioxidants, and MSM.nn

Posologie

posologieTopical, oral

posologie1000 mg


Synergies


Oxidative stress
✪✪✪✪✪

In humans, taking MSM before endurance exercise leads to an acute reduction in exercise-induced protein oxidation, bilirubin, lipid peroxidation, creatine kinase, oxidized glutathione, and uric acid, and also to an increase in total antioxidant capacity. nn

Posologie

posologieOral

posologie2500 mg


Allergic rhinitis
✪✪✪✪✪

Preliminary clinical research shows that taking 2600 mg of MSM (OptiMSM) orally for 30 days may relieve some symptoms of seasonal allergic rhinitis compared with baseline values.nnHowever, this study has several limitations: it did not include a control group, nor information on the severity of the symptoms.nn

Posologie

posologieOral

posologie2600 mg

formulationOptiMSM


Hair beauty
✪✪✪✪✪

MSM has been suggested to have therapeutic uses for improving hair quality by acting as a sulfur donor to keratin.nn

Posologie

posologieOral

posologie1000 mg


Properties


Musculoskeletal effects

full-leaffull-leaffull-leaffull-leaf

MSM is being studied for its potential effects on healing post-exercise muscle injuries. Some clinical trials have shown that MSM can reduce markers of muscle damage, such as creatine kinase, indicating faster recovery. nnIn addition, MSM appears to increase the body's antioxidant capacity and decrease homocysteine, which is beneficial for athletes. nnFurthermore, MSM may inhibit degenerative changes in the joints and reduce inflammation, possibly by stabilizing cell membranes and neutralizing free radicals.nn

Usages associés

Osteoarthritis, Sports performance

Anti-inflammatory

full-leaffull-leafempty-leafempty-leaf

MSM shows promising anti-inflammatory activity. In vitro, it has been observed to inhibit the oxidative functions of neutrophils and reduce levels of NF-κB, a key signaling factor in inflammatory processes. This inhibition affects the production of inflammatory cytokines such as IL-1, IL-6 and TNF-α. nnIn humans, MSM also appears to decrease levels of malondialdehyde, an indicator of oxidative stress, thereby improving antioxidant status and reducing lipid peroxidation. In addition, it reduces levels of homocysteine, an amino acid linked to inflammation and atherosclerosis.nn

Usages associés

Osteoarthritis

Dermatologic effect

full-leafempty-leafempty-leafempty-leaf

MSM could also positively influence hair growth. In a study on mice, topical application of a 10% MSM solution, used alone or combined with 5% minoxidil, showed a significant increase in hair growth, the number of hair follicles, and their diameter, compared with an untreated control group. These results suggest that MSM could be a promising component in hair treatments.

Usages associés

Skin health, hair beauty


Safe dosage

Adults 18 years and older: 1000 mg - 6000 mg

MSM is used orally at doses of 1.5-6 g per day or 50 mg/kg per day as demonstrated in studies lasting up to 6 months.nnA specific product (OptiMSM) is generally recognized as safe.nn


Precautions

Pregnant women: avoid

Information not available.nn

Breastfeeding women: avoid

Information not available.nn

Children up to 18 years: avoid

Information not available.nn