An inhaler comprising: a body; at least one cover element that is movable between a closed position and an open position; individual reservoirs formed on a reservoir substrate; movable support means that receive said reservoir substrate and that are displaceable between a non-dispensing position and a dispensing position; and an indicator device for indicating doses that have been dispensed or that remain to be dispensed, said indicator device comprising: a rotary indicator element that supports indicator means, such as numbers, colors, and/or symbols; and an actuator that co-operates with said movable support means so as to cause said rotary indicator element to turn when said movable support means return from the dispensing position to the non-dispensing position.