An inhaler including a medicament-containing vessel; an actuator body for receiving the vessel and having a medicament delivery outlet, wherein the vessel is releasably attachable to the actuator body; a dose counter integrated into the actuator body; and a first indicium on the vessel and a second indicium on the actuator body, wherein the first indicium and the second indicium identify the vessel and the actuator body to be part of the same metered-dose inhaler. Also provided is a kit including the metered-dose inhaler and at least one pair of stickers and a method for manufacturing the metered-dose inhaler.