OrganiGram Holdings Inc. is voluntarily recalling certain lots of medical marijuana that were supplied between August and December.
The action follows the detection of amounts of an unapproved pesticide not registered for use on marijuana under the Pest Control Products Act.
The source of the substance is unknown to OrganiGram as the company does not use compounds of this nature in its production processes.
OrganiGram is working with Health Canada officials to determine how the substance came into contact with the marijuana.
Currently, the number of lots affected is small, but additional screening might lead to additional lots being deemed compromised. The company said its operating revenue could be negatively affected if the number of contaminated lots increases significantly.