Asthma is basically a chronic disease which affects the airways of the lungs. Someone who suffers from asthma has their airways inflamed and swollen which makes it difficult to breath. The most common treatment for asthma relief is inhalers. These inhalers are portable devices that deliver medication to the lungs. There are many types of inhalers available and some are used for long term control and some are used for fast acting asthma relief. These will work immediately to relieve symptoms from someone who is suffering a attack.
Fast acting asthma inhalers are used exactly as they sound - for fast asthma relief. These inhalers are pressurized canisters with the medication inside. The most popular inhalers are metered dose inhalers which release the proper amount of medication automatically. Some will have counters on them but if not you will have to keep track of how many doses remain in the canister.
Which inhaler is right for you will depend on your symptoms and what type of asthma you suffer from. It is best to consult with your physician to see which one is best for you.