Nebulizer for carrying out an inhalation procedure comprising the steps: ∘ filling medicament liquid into a reservoir or connecting a medicament container to a connecting piece provided therefor, ∘ if applicable, connecting a nebulizer unit with a control unit and/or attaching a mouthpiece, ∘ at least temporary activation of the nebulizer unit, whereby during the activation the medicament liquid is atomized into a fine aerosol, which is dispensed into an aerosol chamber formed by the nebulizer unit and the mouthpiece, ∘ carrying out the inhalation, whereby a user encloses the mouthpiece with the lips and, when inhaling, draws air from the outside into the aerosole chamber, where the air mixes with the aerosol and is further transported through the mouthpiece into the respiratory tracts and, if applicable, the lungs of the user, wherein, by the control unit, a pressure in or a flow rate ( V̇) through the aerosol chamber is monitored and, during each breathing cycle, the aerosol production is started upon the occurance of an activation criterion and stopped again on the satisfaction of a stopping criterion, and whereby the nebulizer comprises - the nebulizer unit with the reservoir, - the control unit with a pressure and/or flow rate sensor, to which the nebulizer unit is connectable and which controls the activation of an aerosol generator enclosed in the nebulizer unit, - the mouthpiece for attaching to a connection piece of the nebulizer unit provided therefor, whereby the aerosol chamber is formed, the aerosol chamber being limited circumferentially by the connection piece and the mouthpiece and frontally by the aerosol generator, characterized in that - on the nebulizer unit an air channel is present, which with its first end leads into the aerosol chamber on the output side of the aerosol generator, and, running below the aerosol generator, with its other end is lead rearwards, where it ends in a protruding cone-shaped stub connected to the control unit. ∘ filling medicament liquid into a reservoir or connecting a medicament container to a connecting piece provided therefor, ∘ if applicable, connecting a nebulizer unit with a control unit and/or attaching a mouthpiece, ∘ at least temporary activation of the nebulizer unit, whereby during the activation the medicament liquid is atomized into a fine aerosol, which is dispensed into an aerosol chamber formed by the nebulizer unit and the mouthpiece, ∘ carrying out the inhalation, whereby a user encloses the mouthpiece with the lips and, when inhaling, draws air from the outside into the aerosole chamber, where the air mixes with the aerosol and is further transported through the mouthpiece into the respiratory tracts and, if applicable, the lungs of the user, wherein, by the control unit, a pressure in or a flow rate ( V̇) through the aerosol chamber is monitored and, during each breathing cycle, the aerosol production is started upon the occurance of an activation criterion and stopped again on the satisfaction of a stopping criterion, and whereby the nebulizer comprises - the nebulizer unit with the reservoir, - the control unit with a pressure and/or flow rate sensor, to which the nebulizer unit is connectable and which controls the activation of an aerosol generator enclosed in the nebulizer unit, - the mouthpiece for attaching to a connection piece of the nebulizer unit provided therefor, whereby the aerosol chamber is formed, the aerosol chamber being limited circumferentially by the connection piece and the mouthpiece and frontally by the aerosol generator, characterized in that - on the nebulizer unit an air channel is present, which with its first end leads into the aerosol chamber on the output side of the aerosol generator, and, running below the aerosol generator, with its other end is lead rearwards, where it ends in a protruding cone-shaped stub connected to the control unit. - the nebulizer unit with the reservoir, - the control unit with a pressure and/or flow rate sensor, to which the nebulizer unit is connectable and which controls the activation of an aerosol generator enclosed in the nebulizer unit, - the mouthpiece for attaching to a connection piece of the nebulizer unit provided therefor, whereby the aerosol chamber is formed, the aerosol chamber being limited circumferentially by the connection piece and the mouthpiece and frontally by the aerosol generator, characterized in that - on the nebulizer unit an air channel is present, which with its first end leads into the aerosol chamber on the output side of the aerosol generator, and, running below the aerosol generator, with its other end is lead rearwards, where it ends in a protruding cone-shaped stub connected to the control unit.