Respiratory Drugs Respiratory Drugs. Hotline 01969947171. Respiratory drugs are medications used to treat conditions affecting the lungs and airways, such as asthma, COPD, and other respiratory illness. They can be broadly categorized into reliever, symptom controller, preventer, and combination medications. Relievers are typically short-acting bronchodilators, symptom controllers are long-acting bronchodilators, preventers include anti-inflammatory …

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