More than CA$1M of tainted MMJ destroyed in Canada

(Correction: An earlier version of this story incorrectly reported that myclobutanil is a known carcinogen.)

A health scare over cannabis containing a banned pesticide has led to more than a million Canadian dollars ($764,703) worth of medical marijuana being destroyed and raised concerns among patients about the extent of tainted MMJ.

Patient worries could potentially cut into Canadian sales of medical cannabis.

Health Canada has targeted two companies for greater product testing. But the government agency is not imposing that requirement on all the nation’s federally licensed MMJ producers.

That has set off alarm bells among MMJ patients who fear that Health Canada has no way of knowing the potential size of the pesticide problem, the Globe and Mail reported.

Canopy Growth said this week it has written off about CA$800,000 in costs because of product recalls. The recalls came after Mettrum, which Canopy Growth recently acquired, was found with a banned pesticide, myclobutanil, in products last year, the Globe and Mail reported. Myclobutanil produces hydrogen cyanide when heated.

Earlier, OrganiGram Holdings was forced to recall MMJ products containing myclobutanil, costing the company nearly CA$500,000.

Health Canada has vowed to start randomly testing products from both Mettrum and OrganiGram in response to the recalls.

However, the Globe and Mail reported that Health Canada is not placing the same restrictions on all 38 companies across the industry, essentially leaving producers in charge of policing themselves.

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3 comments on “More than CA$1M of tainted MMJ destroyed in Canada
  1. Anon Emus on

    “… and known carcinogen, myclobutanil”
    is there a reference for myclobutanil being a known carcinogen? I am not saying it isn’t; just that a claim like this should be backed by evidence.

    • B Rizz on

      Also, it should be recognized that the residual levels of myclobutanil will vary greatly depending on the timing, dosage, and method of application(s). The residue is unlikely to be harmful if eaten, but could produce low levels of hydrogen cyanide if smoked. Strict environmental control eliminates the need for this anti-mildew chemical, therefore no reason exists to spray it on anything near flowering, if at all.

  2. Pam on

    If you don’t know something look it up, and for gods sake don’t sell anything to the public if you’re too stupid to teach yourself about what you’re selling!
    When heated myclobutanil decomposes to produce corrosive and/or toxic fumes, including carbon monoxide, carbon dioxide, hydrogen chloride, hydrogen cyanide, and nitrogen oxides.
    Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound with the chemical formula HCN. It is a colorless, extremely poisonous and flammable liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F).
    Much lower temp than your joint, cooler than your dab.
    Hydrogen cyanide has been absorbed into a carrier for use as a pesticide. Under IG Farben’s brand name Zyklon B (German > Cyclone B, with the B standing for Blausäure – “blue acid”), it was used in Nazi extermination camps to facilitate the Final Solution during World War II. The same product is currently made in the Czech Republic under the trademark “Uragan D2”. Hydrogen cyanide was also the agent employed in judicial execution in some U.S. states, where it was produced during the execution by the action of sulfuric acid on an egg-sized mass of potassium cyanide.

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