The most common side effects of an MSM supplement are positive: relieved pain, strengthened nails, healthy skin and increased energy levels. Although positive MSM side effects are common, negative side effects of an MSM supplement are rare.

MSM side effects are more bothersome than serious. Intestinal gas is the most common  MSM side effect and typically occurs when initially starting use. If you experience gas as an MSM side effect, reduce the dosage until your body adjusts.

Minor gastrointestinal discomfort, heartburn or more frequent stools can occur if too much MSM is introduced too soon. To avoid this, follow the recommended MSM dosage instructions. Additionally, taking MSM with food should alleviate gastrointestinal discomfort or heartburn.

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MSM will increase energy levels. This is a positive side effect unless you take MSM before bedtime. For this reason, we recommend taking MSM in the morning so you can fully capitalize on the energy benefit.

MSM increases blood circulation. Again, this is generally a positive MSM side effect. If you have an existing heart condition or on blood thinning drugs, consult with your doctor before taking MSM.

Insufficient information is available on using MSM during pregnancy and lactation. Consult your physician before using MSM if pregnant or nursing. The safety and effectiveness has not been studied for children under the age of 5. 

MSM is rated as one of the least toxic substances in biology and medicine.  Opti MSM has a long history of safe use, and has not been reported to cause significant adverse effects or drug interactions. Although interactions with pharmaceutical medications have not been noted, inform your health care provider of this, or any other supplement that you take.

It is important to note that MSM is a sulfur compound - not a sulfite. Those who are sulfite-sensitive should not worry about allergic reactions to MSM.

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MSM itself is not shown to cause serious side effects. Although MSM side effects are rare, you can experience side effects from fillers or contaminants included in the MSM.

Many manufacturers claim to sell pure MSM. Be sure and check the label to verify this information. MSM products made in India or China have a poor track record on quality and are often found to contain contaminants. Many MSM products also contain fillers.

To avoid potential contaminant side effects, always  look for the 99.9 % Pure Opti MSM logo. If you are currently using an MSM and do not know where the MSM was manufactured, you can test the MSM purity at home. Pour a small amount of MSM powder in a glass of warm water. If the MSM is pure, the MSM will fall to the bottom of the glass without any ingredients left floating on top of the water. If there are ingredients floating on top of the water, the MSM has additives, fillers and/or binding agents in the MSM.

Put our Opti MSM to the purity test! Opti MSM is  guaranteed 99.9% pure methylsulfonylmethane. The other .1% is water. When you order Opti MSM, you are assured a safe, pure, quality MSM.     

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