OptiMSM® is the world’s purest
methylsulfonylmethane (MSM) 

• MSM is an organic sulfur-containing nutrient that supports healthy active
  lifestyles by providing nutritionally essential sulfur and methyl groups.
• MSM Powder
  KALA Health offers MSM in powder form in convenient 1-lb,
  10 lbs and 33-lbs bottles complete with a measuring spoon (1-lb and 10-lbs only).
  The measuring spoon delivers one tablespoon (12-grams) or
  one teaspoon (4 grams) of pure MSM powder.
  
  MSM powder is offered in two forms. MSM "coarse flakes" and MSM "fine crystals".
  The coarse flakes powder form of MSM is totally FREE of
  ANY additives (such as silicon dioxide)!
  Because the particle are a little larger than the fine crystal powder,
  it takes a little longer to dissolve in water or orange juice.
  The advantage is, however, that you are taking pure MSM without any additives.
  MSM "coarse flakes" are Cardinal Nutrition's patented and superior form of
  MSM obtained by distillation instead of by crystallization.
  This technology ensures the highest quality of MSM on the market to-day,
  entirely free of any contaminants.
• Ingredients:
  Serving Size: 1 Level Tsp. (4 grams)
  Amount Per Teaspoon: Methylsulfonylmethane (99.9% pure OptiMSM): 4g
  Amount Per Tablespoon: Methylsulfonylmethane (99.9% pure OptiMSM): 12g
  Other ingredients: Coarse MSM Powder: None. Fine MSM Powder: 0.1 silicon dioxide.
  Includes measuring teaspoon (4g) and tablespoon (12g)
  OptiMSM® is a registered trademark of Bergstrom Nutrition, Inc.
  Kosher and Halal Certified.