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Source Naturals


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  • Swanson Premium
    MSM Powder
  • Overall Rating: 4.8 out of 5  (64)
  • 16 oz (454 grams) Pwdr
  • Retail $19.99
  • Regular $11.89
  • Sale Price $5.99
  • Add To Order

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In Stock
453.5 grams Pwdr
  • Important source of dietary sulfur

  • Supports joint and connective tissue health

  • Mix with water or juice
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 replenish the body's supply of sulfur. Suitable for vegetarians.

Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt preservatives or artificial color, flavor or fragrance.

Product Label

Supplement Facts

Serving Size 1/2 Teaspoon (approx. 2.6 g)

Servings Per Container 174

  Amount Per Serving % Daily Value
MSM (methylsulfonylmethane [OptiMSM™]) 2.6 g

†Daily Value not established.

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

NOTE: If you are pregnant, may become pregnant, or breastfeeding, consult your healthcare professional before using this product.

Terms and Ingredient Definitions

Source Naturals MSM Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

MSM 4.8 5 4 5
Source Natural MSM Is Awesome "I read an article while sitting in the doctor's office regarding MSM. I was so surprised about the benefits of this supplement. I started with the pills, but they did not seem as effective. Now I'm using the powder form and it is indeed-AWESOME. My skin looks wonderful, my hair and nails are VERY strong, thick, and my hair now has a wavy pattern (I'm African-American by the way) , and it eliminated my female problems during my monthly cycle! I WILL NEVER be without it! I do take about 7,800 mg which is 1/2 teaspoon X 3 daily along with Buffered C. Oh by the way, the article stated to use only Optimsm because this form is completely free of any contaminants. Simply amazing:)" February 24, 2013
all about optimsm when buying msm, only two things i look for........... make sure it is in powder form with no additives or preserving agents, and spot the logo saying it is made by OPTIMSM. this fits the bill winner April 30, 2012
Works Wonderfully I read a couple books on MSM and decided it needed to become a part of my life. This is my favorite MSM product because of the source, and because it mixes with water beautifully. There is no taste! I put a teaspoon in 2 cups of water. In fact, I put MSM in all my beverages. The pound container is far more economical for me than the capsules. My hair is so soft and my skin is radiant. Plus my body just feels better on MSM. April 2, 2012
Great Multi-purpose Product I bought this on sale a while back and am just now realizing how many wonderful uses it has. I purchased it for hair/skin/nails purposes but i find it lovely in the bath with dead sea salt. You get alot of product for the price sale or not and it will last you a good long time. I am very happy with it :) February 7, 2010
1-5 of 5

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