Abstract: There is provided a medicament dispenser comprising a housing; a medicament container having a dispensing mechanism; a container seat for receipt of the container; an anchor station on the housing or connecting therewith; and drive means capable of moving the container seat relative to the anchor station to actuate the dispensing mechanism. The drive means is responsive to the application of non-mechanical energy thereto. The medicament dispenser further comprises adjusting means adapted to enable medicament containers of varying sizes to be received by the housing.