$CBIS Inhalers used for asthma/COPD can be classified into two categories: Metered dose inhalers (MDIs) and Dry powder inhalers (DPIs). Metered dose inhalers are usually used as asthma rescue inhalers or reliever medicines. There are breath-actuated auto-inhalers that release the medication when you breathe in, and there are non breath-actuated pressurized inhalers in which the medication is released by pushing the canister down into the holder. They are all bronchodilators and are either short or long acting beta agonist inhalers or inhaled corticosteroids.

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