An inhaler comprising: at least one cover element (11, 12) that is movable between a closed position and an open position; individual reservoirs formed on a reservoir substrate; movable support means (50) that are displaceable between a non-dispensing position and a dispensing position; reservoir opening means (80) for opening a respective reservoir in the dispensing position; loading means (800) for urging said movable support means towards said dispensing position; blocking means (100) for retaining said movable support means in the non-dispensing position; and trigger means (60) for releasing said blocking means; said loading means including an elastically-deformable loading element (51) that co-operates with a cam surface (910) that is connected to said at least one movable cover element; and said cam surface comprising a first portion that is adapted to load said loading means, and a second portion that co-operates with said loaded loading means.