Method for using a dry powder inhaler, said method comprising the foliowing steps: supplying a dry powder inhaler (100 200) having a body ( 110 210) containing a dispersion chamber ( 111 2 11), a dispensing orifice (131 23 1) through which the user inhales, a loading opening (121 220) receiving a capsule (10) containing a dose of dry powder to be inhaled, and at least one movable part (130 260) that can move with respect to said body between a first end position and a second end position, inserting a full capsule (10) into said loading opening (121 220), moving said movable part from one of the end positions thereof to the other end position in order to open said capsule and empty the powder contained therein into said dispersion chamber, inhaling said powder through said dispensing orifice, and returning said movable part to its initial position in order to open said dispersion chamber and remove the empty capsule from said dispersion chamber.
