Cetyl Myristoleate

What is cetyl myristoleate?

Cetyl myristoleate (CM) is an ester (a compound produced by the reaction between an acid and an alcohol) of a fatty acid (myristoleic acid). It is commonly found in fish oils, dairy products, butter, and animal fat. It was first isolated in 1994 from Swiss Albino mice found to be immune to the induction of polyarthritis (arthritis of multiple joints). Most commercial versions of cetyl myristoleate are now synthetic and not of animal origin. The mechanism of action of cetyl myristoleate is unknown but may be similar to that of omega-3 fatty acids (see handout on Fish Oil).

Why recommend administration of cetyl myristoleate?

cetyl_myristoleate-1Cetyl myristoleate is recommended to treat osteoarthritis in dogs.

While a recent review article asserts cetyl myristoleate is ineffective at relieving arthritic pain in humans, a 1997 randomized study reported in the Townsend letter claims improvement in over sixty percent of patients who applied the oil topically on an as needed basis to relieve refractory arthritis pain, compared to about 15 percent of patients using a placebo. A more rigorous study in the Journal of Rheumatology in 2002 reported significant improvements compared to a placebo in the range of motion of arthritic knees in human patients treated orally with cetyl myristoleate. In a 2003 Pharmacological Research study, a modest but discernible improvement in pain and a reduced incidence of arthritis in mice was also demonstrated following either injection or oral use of the supplement.

How much experience is there with the use of cetyl myristoleate in pets?

Cetyl myristoleate has been used for about 10 years in treating dogs with osteoarthritis.

What species of animals are being treated regularly with cetyl myristoleate?

cetyl_myristoleate-2Dogs are the pets most commonly treated for osteoarthritis.

How can my pet benefit from cetyl myristoleate?

"...treatment with cetyl myristoleate may relieve pain, improve mobility and increase range of motion."

For dogs with osteoarthritis, treatment with cetyl myristoleate may relieve pain, improve mobility and increase range of motion.

How successful is cetyl myristoleate?

Treatment with cetyl myristoleate appears to be successful in many dogs with osteoarthritis. As is true with many joint supplements, results are usually better the earlier therapy is started. Veterinarians using available commercial products containing CM alone and products containing CM in combination with other supplements (such as glucosamine, MSM, and other herbs and antioxidants) have reported success in dogs with osteoarthritis.

How safe is cetyl myristoleate?

There do not appear to be any side effects associated with the use of cetyl myristoleate. A small number of patients may exhibit mild gastrointestinal upset (that could result in nausea, vomiting, and/or diarrhea) which resolves upon cessation of treatment.

Where do I obtain cetyl myristoleate and do I need a prescription?

Pet owners are cautioned against buying supplements without knowledge of the manufacturer, as supplements are not highly regulated and some supplements may not contain the labelled amount of ingredients. Your veterinarian may have preferred supplements that he or she will recommend. A prescription is not needed for cetyl myristoleate supplements.

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