Canadian health officials working to stem the spread of the novel coronavirus are warning against the use of two drugs touted some as a possible treatment for COVID-19.

Health Canada said chloroquine and hydroxychloroquine can have “serious side effects” and should only be used under the supervision of a physician.

Both chloroquine and hydroxychloroquine are approved medications to treat malaria and some auto-immune diseases, but Health Canada is warning they should only be used if prescribed and under the supervision of a doctor.

“Health Canada is concerned that some people may be directly buying and using chloroquine or hydroxychloroquine to prevent or treat COVID-19,” reads a warning on posted on the Health Canada website on April 25.

3:39Coronavirus outbreak: Dr. Theresa Tam warns against the use of untested drugs to treat COVID-19

Coronavirus outbreak: Dr. Theresa Tam warns against the use of untested drugs to treat COVID-19

According to Health Canada, the drugs are known to potentially cause liver or kidney problems, low blood sugar and nervous system problems,

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