Abstract: A carton which is intended especially for drugs, as well as a blank for forming the same. The carton comprises a sleeve portion consisting of at least three wall-forming panels (1,2,4,6) which are interconnected by folding lines (3,5,7) and by a closure tab (8), which is attached to a first wall-forming panel (1) along a folding line (9) and engages a second wall-forming panel (6), ends flaps (10,11;12,13;14,15) attached to the ends of the sleeve portion along folding lines (16,17,18,19,20,21) and closing the ends of the sleeve portion and the carton comprises an additional panel (25), which is connected to one of the wall-forming panels (1,2,4,6) along a folding line (26) and which overlies at least one of the wall-forming panels (1,2,4,6). The use of the carton for carrying at least one pharmaceutically active substance as described.