Dog MSN Review – What is MSN?

msmMSM (Methylsulfonylmethane) is a nutritional supplement available from several manufacturers, and is widely used as a supplement that may aid with hip and joint issues for dogs, cats, horses, and humans. MSM supplements range in price from very inexpensive to moderately expensive depending on which additional ingredients, if any, are included in a particular formulation.

MSM Product Information

MSM products are sold either by themselves or with the addition of other ingredients. MSM supplementation may support the growth and health of joints, and is generally intended to provide support for healthy connective tissues in aging dogs. MSM provides elemental sulfur, which is an essential chemical used in the synthesis of cartilage. However, MSM has not been recognized as GRAS (Generally Recommended As Safe) for canine usage in the AAFCO* listing for canine supplements. The use of this supplement may provide support for healthy connective tissues in aging dogs.

The Pros of MSM

  • Shown to have effective results in some formulations
  • It is widely available both alone and combined with other supplements

The Cons of MSM

  • Does not include Glucosamine HCl or Chondroitin Sulfate
  • Does not include antioxidants to improve circulation and fight free radical tissue damage
  • Does not include important joint-building ingredients zinc and calcium, and Vitamin C
  • Is not Generally Recognized As Safe for use in dogs by AAFCO
  • Inexpensive formulations may include lower-quality ingredients

MSM – The Bottom Line

MSM is a nutritional supplement that may benefit dogs who are experiencing joint conditions due to aging or predisposition to joint issues. It is widely believed to be more effective when used in conjunction with Glucosamine HCl, Chondroitin Sulfate, and other vitamins, minerals and antioxidants.

*AAFCO stands for the Association of American Feed Control Officials, an organization whose primary goal is to provide a mechanism for developing and implementing uniform and equitable laws, regulations, standards and enforcement policies for regulating the manufacture, distribution and sale of animal feeds; resulting in safe, effective, and useful feeds.

How Does MSM Compare to Flavocin?


If you are looking for a more complete hip and joint formula for your dog that also includes vitamins and minerals zinc, calcium and Vitamin C, along with an AAFCO approved source of elemental sulfur (the antioxidant ingredient Cysteine), CLICK HERE.