Overview

Methylsulfonylmethane (MSM) is a chemical found in green plants, animals, and humans. It can also be made in a laboratory.

Some literature that promotes MSM states that MSM can treat sulfur deficiency. But there is no Recommended Dietary Allowance (RDA) for MSM or sulfur, and sulfur deficiency has not been described in the medical literature.

People use MSM for osteoarthritis. It is also used for pain, swelling, aging skin, and many other conditions, but there is no good scientific evidence to support most of these uses.

How does it work ?

MSM might supply sulfur to make other chemicals in the body.

Uses & Effectiveness ?

Possibly Effective for

  • Osteoarthritis. Research shows that taking MSM by mouth in two to three divided doses daily, either alone or together with glucosamine, can slightly reduce pain and swelling and improve function in people with osteoarthritis. But it does not seem to improve stiffness or overall symptoms. MSM may also be helpful when used in combination with other ingredients.

Possibly Ineffective for

  • Poor circulation that can cause the legs to swell (chronic venous insufficiency or CVI). Research shows that applying MSM and EDTA to the skin can reduce swelling in the calf, ankle, and foot in people with CVI. But applying MSM alone seems to actually increase swelling.

Insufficient Evidence for

More evidence is needed to rate MSM for these uses.

Side Effects

When taken by mouth: MSM is POSSIBLY SAFE for most people when taken for up to 3 months. In some people, MSM might cause nausea, diarrhea, bloating, fatigue, headache, insomnia, itching, or worsening of allergy symptoms.

When applied to the skin: MSM is POSSIBLY SAFE for most people when used in combination with other ingredients, such as silymarin or hyaluronic acid and tea tree oil, for up to 20 days.

Special Precautions and Warnings

Pregnancy and breast-feeding: There isn't enough reliable information to know if MSM is safe to use when pregnant or breast feeding. Stay on the safe side and avoid use.

Varicose veins and other circulatory problems (chronic venous insufficiency): Applying a lotion that contains MSM to the lower limbs can increase swelling and pain in people with varicose veins and other circulatory problems.

Interactions ?

We currently have no information for METHYLSULFONYLMETHANE (MSM) Interactions.

Dosing

The following doses have been studied in scientific research:

BY MOUTH:
  • For osteoarthritis: MSM 1.5-6 grams daily taken in up to three divided doses for up to 12 weeks. MSM 1.5 grams daily plus glucosamine 1.5 grams in three divided doses daily for 2 weeks. MSM 500 mg, glucosamine sulfate 1500 mg, and chondroitin sulfate 1200 mg taken daily for 12 weeks has been used.
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CONDITIONS OF USE AND IMPORTANT INFORMATION: This information is meant to supplement, not replace advice from your doctor or healthcare provider and is not meant to cover all possible uses, precautions, interactions or adverse effects. This information may not fit your specific health circumstances. Never delay or disregard seeking professional medical advice from your doctor or other qualified health care provider because of something you have read on WebMD. You should always speak with your doctor or health care professional before you start, stop, or change any prescribed part of your health care plan or treatment and to determine what course of therapy is right for you.

This copyrighted material is provided by Natural Medicines Comprehensive Database Consumer Version. Information from this source is evidence-based and objective, and without commercial influence. For professional medical information on natural medicines, see Natural Medicines Comprehensive Database Professional Version. © Therapeutic Research Faculty 2018.