MSM

MSM at a glance

• Full nameMethylsulfonylmethane
• Also calledDimethyl sulfone
• Ingredient familySulphur-containing compound
• In our rangeCrystals and a blended liquid

What is MSM?

MSM is the short name for methylsulfonylmethane, a compound containing sulphur. You may also see it written as methyl sulphonyl methane or described as dimethyl sulfone. The different spellings can make labels look more complicated than they are: these names refer to the same ingredient.

MSM is commonly presented as a white crystalline material. Within our range it appears both as a standalone crystal product and among the ingredients in Sustain probiotic. Those formats offer different ways of presenting the ingredient and have their own directions.

Start with the complete product rather than the abbreviation alone. Its ingredients list tells you whether you are looking at MSM on its own or MSM as one part of a wider blend.

Understanding the sulphur connection

Sulphur is part of MSM’s molecular structure. That is why descriptions often call it a sulphur-containing compound. MSM is not the same material as elemental sulphur, and products containing different sulphur compounds cannot be treated as interchangeable.

You may encounter the phrase organic sulphur. In chemistry, organic refers to a carbon-containing compound; the term alone does not establish agricultural organic certification. Source information and certification are separate details to look for in the product specification.

Another useful distinction is quantity. A label stating a weight of MSM is describing the whole compound, rather than the same weight of sulphur alone. Read the ingredient name alongside the number when comparing different preparations.

Crystals, powder and ingredient identity

Crystals and powder describe physical presentation. A finer powder and a more visibly crystalline material can both be methylsulfonylmethane. Particle appearance by itself does not establish purity, source, suitability or the amount to use.

Our standalone product is listed as 100% methylsulfonylmethane and sold as MSM crystals. The current listing describes purification by distillation. That is a processing detail, rather than a different ingredient name.

For any specific sourcing question, use the current product information or contact us for the details you need. An illustrative image can show the general character of crystals, but cannot demonstrate a batch’s composition or testing.

MSM and DMSO: understanding the names

MSM and DMSO are often mentioned together because their chemistry is related. Their full names make the distinction clearer: MSM is dimethyl sulfone, while DMSO is dimethyl sulfoxide.

They are separate materials. A direction written for one cannot be transferred to the other, and a product should always be used according to its own intended purpose. Keep the original labelled packaging so the identity remains clear.

The same principle applies to sulphate salts and other ingredients with sulphur in their names. A shared element does not make two products equivalent.

Where you will find MSM in our range

Check the full ingredients and allergen information for the product you choose. The presence of MSM in both products does not mean they need to be used together.

Reading the label and storing your crystals

Check the named ingredient, intended use, serving and storage instructions before opening a new pack. Where an amount is given by weight, use the appropriate measure; a scoop from another product or an ordinary household spoon may hold a different quantity.

Keep the crystals dry and the packaging closed. Use a clean, dry utensil, store away from splashes and keep out of reach of children. Follow the expiry information on the pack. A liquid blend such as Sustain has separate storage directions, so do not apply the crystals’ instructions to it.

MSM can cause digestive upset or skin reactions in some people. Stop if it causes a reaction. Check suitability with a qualified healthcare professional if you take medicines, have a health condition, are pregnant or breastfeeding. Do not exceed the pack directions.

Common questions about MSM

Keep exploring

Explore live cultures for more about another ingredient group in Sustain, or visit our vitamins and other nutrients library.

For other ingredient formats, read about creatine monohydrate powder and glutathione, or return to the complete Learn library.