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Best Answer: Inhaler therapy for asthma can be slightly confusing. It is important that you understand what your different inhalers contain, how they work and when to use them. A blue inhaler contains a short-acting reliever of symptoms (most commonly salbutamol).Salbutamol acts on beta-receptors of the bronchial airways of your lungs.These airways constrict during an asthma attack.ow to your purple inhaler. Purple inhalers are combination inhalers. They contain a long-acting reliever (like salmeterol) and a steroid preventer (like fluticasone propionate). The long acting reliever acts on the same receptors that salbutamol acts on, but they bind for much longer.
Inhaler, AccuhalerÂ®, and EvohalerÂ®. Salmeterol is called a bronchodilator because it widens (dilates) your airways. It works by opening up the air passages in your lungs so that air can flow into your lungs more freely. This helps to ease symptoms such as coughing, wheezing and feeling breathless.