Other breath-activated inhalers are also called dry powder inhalers. These inhalers do hamiş contain the pressurised inactive gas to propel the medicine. You don't have to push the canister to release a dose. Before you start using the preparation, read the manufacturer's printed information leaflet from inside the pack. It https://www.metooo.co.uk/u/672d07a3d5e0d01190f7db26