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Source Naturals, MSM (Methylsulfonylmethane) Powder, with Vitamin C, 8 oz (227 g)

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In Stock - Only 8 left
  • Expiration Date: Sep 2019
  • Shipping Weight: 0.71 lbs (0.32 kg)
  • Product Code: SNS-01088
  • UPC Code: 021078010883
  • Package Quantity: 8 oz (227 g)
  • Dimensions: 2.5 x 2.5 x 5 in, 0.6 lbs (0.27 kg)
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Save $4.01 when you purchase these items today for only $19.35
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Combo Discount: - $4.01
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Product Overview


  • Dietary Supplement
  • OptiMSM

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. Vitamin C is necessary for the formation of connective tissue, and for amino acid metabolism and hormone synthesis, and is a key factor in the body's immune system. MSM is a naturally occurring form of organic sulfur found mainly in protein-rich foods such as eggs, fish and lean meat. Taking MSM throughout the 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. Contains no yeast, dairy, egg, gluten, 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 volume. Settling may occur.

Supplement Facts
Serving Size: 1/2 Teaspoon
Servings Per Container: 69
  Amount Per Serving %DV
Vitamin C (as ascorbic acid) 650 mg 1,080%
MSM (methylsulfonylmethane [OptiMSM]) 2.6 g
†Daily Value not established
iHerb Customer Reviews

Acid lactic buffer

Posted by 4861101337694769635 on Jun 28, 2016

I'm cyclist it's good in post race.recuperation facilited .

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Good Source of Vitamin C

Posted by 5513619740674637077 on Jun 27, 2016

This product is good for those who are suffering from joint inflamation.

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Posted by 4676273252614227253 on May 26, 2015

I have pre-arthritic conditions in my knees because of previous injuries. I have tried everything, including getting a cortisone injection in my knee. I did a lot of research and was hoping to find something to help with the pain. For me, this supplement is a lifesaver!!! After only 3 weeks of taking it, I am almost completely pain free, have more energy, and have lost a few pounds without changing anything else. I am excited to see how it works when I resume swimming this summer. iHerb had fast shipping and great pricing, I would definitely order this again!

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Posted by 5246362045838804121 on Apr 08, 2015

I love it!!

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I trust its efficacy and purity

Posted by Reviewer3168863 on Jul 11, 2013

Just as with creatine, much of the world's MSM supply is produced in unscrupulous Chinese factories, where purity is unregulated. This product's OptiMSM brand is the only way of being sure that the MSM is produced in the USA.

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