The disclosure relates to a medicament delivery assembly that has a mouthpiece provided with an air amplifier and a primer source, where the mouthpiece and the air amplifier are each connected to the primer source via an actuatable valve. The air amplifier is also provided with a medicament extraction tube such that when the actuatable valve is opened, the primer source is activated and causes air to flow to the air amplifier. There is also described a method of administering a medicament using such a medicament delivery assembly.