Device for vaporizing substances of those contained in a vessel that is closed on the top by a breathable membrane fitted horizontally, characterised in that it comprises at least one body open on its sides, with a preferably tubular shape (1), which can house the vessel containing the substance, means (5) for preventing the rotation of the vessel inside the body open on its sides, and means (4) for deforming the vessel, thereby bringing into action the tearing elements.