The inventive blister strip (20) for a fluid or powder inhaler comprises a plurality of blisters each of which is formed by a reservoir (21) provided with an opening (25) which is tightly sealed by a separable layer (7, 5). Said invention is characterised in that said blister strip (20) comprises at least one base layer (6) provided with openings (25) forming the blister openings and a cavity layer (8) provided with cavities forming the blister walls (21), said separable layer (7, 5) has the first part thereof (7) disposed between said base layer (6) and cavity layer (8) and the second part thereof (5) disposed on the opposite side with respect to the base layer (6) and said first and second parts of the separable layer (7, 5) are connected to each other near each opening (25) of the base layer (6). |