Inhalation device

An actuator for a pressurised metered dose inhaler, comprising:

• a tubular section providing an outlet through which medicament is in use inhaled;
• a nozzle block having a first tubular element with an outer radial surface and a free end and a second tubular element having an inner radial surface, said first and second tubular elements being co-axial with each other, said outer and inner radial surfaces being spaced from each other to define an annular space between said inner and outer radial surfaces, wherein in use a valve stem of a canister is located over the free end of the first tubular element and in said annular space;
• and
• a spray orifice in fluid communication with said first tubular element for directing a spray into the tubular section.