Abstract: A user friendly dry drug powder inhaler (1) including a capsule canister (13) detachably fitted to the skirt (5) of the base (3) of the aspiration chamber. Gripping knurls (16) are provided on teh inhaler. The mesh portion (9) is circular and easily detachable. The mouthpiece (10) defines a tapered cicularprofile. A detachable protenctive cap (17) is fitted to the moughpiece. The cutter rib (8) extends above the edge of the base into the closure (4) of the aspiration chamber. The tubular capsule holder (11) is provided with a tapered circular hole (11a)as illustrated in fig 2.