The inhalers
Most medicines for asthma are inhalers. These inhalers represent devices that contain a substance which eliminates the symptoms of asthma. The most common of them appear to be pressured aerosols metered dose inhalers (MDI). These contain a carrier that suspend the drug, exert pressure on the system, and transport the drug particles so that they may reach the lungs, In the past, the carrier substance used to be CFC and nowadays it turned to halo carbons.
In one kind of be clomethasone inhaler, the power was increased with 80% by an increased absorption and suitable size of the particles, but there were no result in the salbntamol inhalers.
Micronised powder packages or expressed pellets are created for the asthmatic persons to push the medicine into their lungs by their own breath. But, in case of an attack, they are difficult to take and they are more expensive.
Inhalers sometime use spacers to increase the quality of substance they release.