A device for vaporizing a medicament (4). The device comprises a resistive element (9) on which the medicament is deposited. The device also comprises a source of electrical power which can be connected across the resistive element to vaporize the medicament. The element is configured to provide a central cool region (11) on which the medicament is deposited and a relatively hotter region (12) surrounding the cool region. Through holes (13) are also provided. The resistive element may be a mesh, foil or a tile on which a resistive pattern is deposited.