Portable device (100, 200, 300, 400, 500, 600, 700, 800) for inhalation of at least one active composition, characterized in that it comprises: - at least two reservoirs (105, 110, 205, 305, 405, 410, 505, 510, 605) for storing an active composition; - at least one intermediate chamber (115, 525) connected to at least one reservoir; - an inhalation line (120, 530) connected to the intermediate chamber; - at least two aerosolization means (130, 135), and wherein at least two aerosolization means (130, 135) are each connected to a separate reservoir, and: - at least a first aerosolization means is a means for expanding a pressurized content and at least a second aerosolization means is a means for expanding a pressurized content; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a vaporizer; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; or - at least a first aerosolization means is a vaporizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; - a regulator (125, 225, 325, 425, 535) for regulating the quantity of aerosolized active composition according to a command representing a quantity of active composition to be aerosolized received by the regulator. - at least two reservoirs (105, 110, 205, 305, 405, 410, 505, 510, 605) for storing an active composition; - at least one intermediate chamber (115, 525) connected to at least one reservoir; - an inhalation line (120, 530) connected to the intermediate chamber; - at least two aerosolization means (130, 135), and wherein at least two aerosolization means (130, 135) are each connected to a separate reservoir, and: - at least a first aerosolization means is a means for expanding a pressurized content and at least a second aerosolization means is a means for expanding a pressurized content; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a vaporizer; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; or - at least a first aerosolization means is a vaporizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; - at least a first aerosolization means is a means for expanding a pressurized content and at least a second aerosolization means is a means for expanding a pressurized content; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a vaporizer; or - at least a first aerosolization means is a nebulizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; or - at least a first aerosolization means is a vaporizer and at least a second aerosolization means is a means for expanding a pressurized content in a reservoir; - a regulator (125, 225, 325, 425, 535) for regulating the quantity of aerosolized active composition according to a command representing a quantity of active composition to be aerosolized received by the regulator.