A closure (100) for a container (6) is disclosed. The closure comprises a fixture (11) for attaching the closure to the container, a medicament port (14) for receiving a medicament dispenser (2) and discharging a medicament from the dispenser within an internal volume of the container, an air inlet port (5) for drawing air into the container, a mouthpiece (3) and a valve (4). The valve has an open position which permits air to be drawn from the internal volume of the container into the mouthpiece when a user inhales, and a closed position which seals the mouthpiece from the container and permits air exhaled by the user into the mouthpiece to be vented to atmosphere.
