Health Canada Issues Warning Against Dietary Supplement MdMt


(Ottawa, Ontario – July 13, 2007) – Health Canada issued an advisory earlier this week to warn consumers against a dietary supplement called MdMt, or any other supplements containing the synthetic steroids methyl-1-testosterone or methyldienolone. 

These products, like all anabolic steroids, can cause serious adverse health effects such as liver damage, heart problems, hardening of the arteries, reduced fertility, masculinization, and enlargement of male breasts. 

Products containing methyl-1-testosterone or methyldienolone are not authorized for sale in Canada, but Health Canada warns that they have been available in stores and over the Internet. 

Anabolic steroids are prohibited in sport under the 2007 World Anti-Doping Agency Prohibited List. Athletes subject to doping control should avoid using products which contain prohibited substances. Please remember that athletes always bear the ultimate responsibility for the products they ingest.  

CCES reminds athletes to check the label of any dietary supplement or sports nutrition product to ensure that it carries the NSF Certified for SportTM mark. Products bearing the mark have undergone testing for prohibited substances, label content review, production facility inspections, and ongoing monitoring. 

Further resources:

The CCES is an independent, national, non-profit organization. Our mission, to foster ethical sport for all Canadians, is carried out through research, promotion, education, detection and deterrence, as well as through programs and partnerships with other organizations.


For further information, please contact:
Matthew Koop, Athlete Services Manager
(613) 521-3340 x3206 or

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