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Jarrow Formulas, MSM Powder, 35.3 oz (1000 g)

By Jarrow Formulas

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  • Product Code: JRW-19017
  • UPC Code: 790011190172
  • Package Quantity: 35.3 oz (1000 g)
  • Dimensions: 7 x 5 x 5 in, 2.5 lbs (1.13 kg)
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Product Overview

  • Methyl-Sulfonyl-Methane
  • OptiMSM
  • Vegan
  • Dietary Supplement

Jarrow Formulas MSM Sulfur is an organic source of bioavailable sulfur. Sulfur is an antioxidant mineral found in major structural tissues of the body such as cartilage. The sulfur from MSM is used to produce glycosaminoglycans (or mucopolysaccharides) present in proteoglycans such as chondroitin sulfate, dermatan sulfate, and hyaluronic acid. These sulfur containing glycosaminoglycans are found in high concentrations in connective tissues, including joint cartilage, skin and collagen.

Suggested Use

Take 1 scoop per day or as directed by your qualified healthcare professional.

For best results, use with Jarrow Formulas JarroSil, the biologically Activated Silicon.

Other Ingredients

Contains pure OptiMSM Methyl-Sulfonyl-Methane. Also contains silicon dioxide (anti-caking agent) (in trace amounts).

No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.

Suitable for vegetarians/vegans.


Packed by weight, not by volume.

Note: If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.

Keep out of the reach of children.

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Supplement Facts
Serving Size: 1 Scoop (1 g)
Servings Per Container: 1000
  Amount Per Serving % DV
OptiMSM Methyl-Sulfonyl-Methane (MSM) 1000 mg *
*Daily Value not established.

iHerb Customer Reviews

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Posted by Reviewer2551380 on Nov 15, 2010

Well, if you are reading this, you know iherb.com is the best........re: Jarrow MSM Powder------AWESOME!!!!!!------I'm a former division I collegiate wrestler----12 years of daily fighting is brutal on the joints.....lots of pain in lots of areas.....This stuff works like magic....My doctor recommended 20 grams daily with 10 grams of vitamin C(this would be near impossible with the capsules- my recipe is 10 grams MSM+5 grams Vitamin C powder+ a little agave sweetener+6 ounces of water= relief....i do this morning and afternoon to get my 20gramsmsm and 10 grams vitamin C)....I've had amazing results......I now play tennis (which on the hardcourts is taxing on the joints as well)4 to 5 days a week......also, i haven't had a migraine headache in two months.....Do yourself a favor and give this a try.....

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13 people found the following review helpful

Annoyed by labeling

Posted by Reviewer2280979 on Jan 22, 2008

Quote from web site, "Contains NO other ingredients." I was annoyed to find that, according to the product label "Also contains silicon dioxide (anti-caking agent) (in trace amounts)" I specifically ordered this because I thought it was pure.

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25 people found the following review helpful


Posted by Reviewer2882806 on Mar 02, 2008

Jarrow optimsm is distilled and made in the U.S.A. I take 1-3 teaspoons a day. Helps with pain, inflammation, allergies, detox, skin, hair, nails, etc. I put it in cup, then pour it in my mouth and then chase it down with some water with meals or a green drink. A little dusty compared to flakes, so I might use optimsm flakes instead, although flakes probably don't mix well, however I don't mix in liquid anyway. I have used optimsm for years and it has worked fine for me, but I do have to cut my hair and nails alot more often. UPDATE: This product used to be pure with no other ingredients, but it now contains silicon dioxide so I don't plan to use this particular product again.

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15 people found the following review helpful

Good stuff

Posted by rautavaara on Jul 02, 2013

I really recommend this to all who are trying to find a good deal on MSM. This is pure. Don't worry about the anti-caking agent. It's in everything we eat. So basically there IS NO AVOIDING IT. Try to remember your joints. You'll miss them when they are gone.

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6 people found the following review helpful

Good but bad

Posted by Reviewer1975837 on Jul 14, 2010

Opti-MSM is the best msm, but I was disappointed to notice it wasn't pure because of the added silicone.

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6 people found the following review helpful

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