Health Canada is advising Canadians that it has seized the unauthorized health product “Dust Extreme” by Blackstone Labs, from Minotaure Nutrition, at 5333 Laurier Blvd., Unit 130, in Terrebonne, QC. “Dust Extreme” is promoted as a pre-workout supplement and is labelled to contain the unauthorized drug 1,3 Dimethylamylamine (DMAA), which may pose serious risks to the health of Canadians.