The invention is related to an apparatus comprising a dispense interface for use with a drug delivery device, the dispense interface comprising a lockout element being arranged at least partially between an outer body of the dispense interface and an inner body of the dispense interface and wherein the lockout element is configured to be removeably maintained in a first position, such that when the dispense interface is first attached and then removed from said drug delivery device, the lockout element moves into a second position, wherein the lockout element in the second position is configured to prevent said dispense interface from being reattached to a drug delivery device.
