An inhaler (also known as a puffer, pump or allergy spray) is a medical device used for delivering medicines into the lungs through the work of a person's breathing. This allows medicines to be delivered to and absorbed in the lungs, which provides the ability for targeted medical treatment to this specific region of the body, as well as a reduction in the side effects of oral medications. There are a wide variety of inhalers, and they are commonly used to treat numerous medical conditions with asthma and chronic obstructive pulmonary disease (COPD) being among the most notable. Some of the common types of inhalers include metered-dose inhalers, dry powder inhalers, soft mist inhalers, and nebulizers. Each device has advantages and disadvantages and can be selected based on individually specific patient needs, as well as age, pathological conditions, coordination, and lung function. Proper education on inhaler use is important to ensure that inhaled medication creates its proper effects in the lungs. Medical uses Inhalers are designed to deliver medication directly to the lungs through a person's own breathing. This may benefit a patient by providing medicines directly to areas of disease, allowing medication to take a greater effect on its intended target, and limit side effects of medications when administered locally. Inhalers are used in a variety of different medical conditions with diseases of the lungs and respiratory system being among the most common. Individuals with these diseases/conditions need medications designed to decrease airway inflammation and obstruction to allow for easier and comfortable breathing. Antibiotic medications have even been developed for inhalers to allow for direct delivery to areas of infection within the lungs. Two of the most common conditions that warrant inhaler therapy are asthma and chronic obstructive pulmonary disease. Asthma Asthma is a condition of intermittent airway obstruction due to inflammatory processes in the lungs. Inhaled medications are used to calm down the inflammation present in the lungs and allow for relief of the airway obstruction. Common inhaled medications used for treatment of asthma are bronchodilators such as salbutamol, corticosteroids, and salmeterol. These medications allow for patients to have relief of airway obstruction symptoms and reduced inflammation. If some people are unable to use inhalers, non-steroidal anti-inflammatory drugs (NSAIDs) may be used, but with caution since they may cause immunological hypersensitivity to NSAIDs, resulting in respiratory-related symptoms such as bronchospasms, acute asthma exacerbation, and severe asthma morbidity. Chronic