The present invention is related to metered dose inhalation formulas and manufacturing process. The active pharmaceutical ingredient can be beta-2 agonists, corticosteroids, or a combination thereof. The inhalation formulas are homogenized suspensions with hydrofluoroalkane (HFA) propellant, minimal amount of ethanol and polyetheleneglycol (PEG) as suspending and particle size modifying agents.
