The invention provides an inhaler for dispensing medicament. The inhaler comprises auxiliary energy provision means for providing auxiliary energy for aerosolizing medicament energy release means for releasing auxiliary energy from the auxiliary energy provision means feed means for feeding a dose of medicament, characterized in that the inhaler comprises control means for controlling a time interval between aerosolization of the medicament and a users inhalation. The inhaler is operable, in use, to aerosolize medicament using the auxiliary energy, and harness the users inhalation to deliver the aerosolized medicament to the user.
