Health Canada is warning Canadians of the serious risks to health associated with use of the unauthorized drug product Miracle Mineral Solution (MMS), which was sold as a treatment for serious diseases such as cancer through the website www.buymms.biz. MMS contains sodium chlorite, which is a chemical used mainly as a textile bleaching agent and disinfectant and may pose serious risks to health if ingested. An alternate format of MMS, labelled as CDS, is also available for sale on the website and would pose a similar risk.