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Source Naturals, MSM Powder, 35 oz (1000 g)

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In Stock
  • Expiration Date: May 2020
  • Shipping Weight: 2.9 lbs (1.32 kg)
  • Product Code: SNS-01497
  • UPC Code: 021078014973
  • Package Quantity: 35 oz (1000 g)
  • Dimensions: 4.625 x 4.625 x 6.625 in, 2.45 lbs (1.11 kg)
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Product Overview


  • Dietary Supplement
  • (Methylsulfonylmethane)

MSM serves as an important source of bioavailable dietary sulfur, a mineral that plays a critical role in maintaining the integrity and elasticity of connective and other tissues. It is an important component of proteins found throughout the body, such as in hair, nails, skin and tendons. MSM is a naturally occurring form of organic sulfur found mainly in protein-rich foods such as eggs, fish and lean meat. Taking MSM each day helps to replenish the body's supply of sulfur.

Suggested Use

1/2 teaspoon daily, briskly stirred or blended, with 8 ounces of water or juice.

Other Ingredients

Suitable for vegetarians and Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.


Store in a cool, dry place.

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Packaged by weight, not by volume. Settling may occur.

Supplement Facts
Serving Size: 1/2 Teaspoon (approx. 2.6 g)
Servings Per Container: 384
  Amount Per Serving %DV
MSM (methylsulfonylmethane [OptiMSM]) 2.6 g
†Daily Value not established.
iHerb Customer Reviews

AGood anti-inflammatory

Posted by Reviewer1465605 on Oct 17, 2016

I have a sensitive GI tract, prone to ulcerations. I also have arthritis. I add this to my smoothie. It seems to help with inflammation. This seems to calm my insides down. I do move better when I add this to my smoothies. I put this in my husband's smoothie, he also takes glucosamine with chondroitin, and he's moving around a lot better. I probably should take his glucosamine with chondroitin too.

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Be moderate

Posted by 4828455117456499727 on Oct 13, 2016

Great product,but be moderate with quantity. Too much causes headache.2 grams a day is enough for me.

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shipping costs

Posted by 5438351986982267805 on Sep 09, 2016

shipping costs too high 8.95 + 14.00 duties forget me I ordered 25 times the first 24 cost about 6.00 took 3 weeks too arrive but a lot more reasonable

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Posted by Hungarian on Aug 02, 2016

the best price/value Opti MSM

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smooth and effective

Posted by Reviewer1287175 on Apr 22, 2016

This is a great source of MSM, you can trust their purity more than the cheaper brands.

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