Inhalers are medical devices used to deliver medication directly into the lungs. They are commonly prescribed for conditions like asthma and chronic obstructive pulmonary disease (COPD). Inhalers can be either metered-dose inhalers (MDIs), which release a specific amount of medication with each puff, or dry powder inhalers (DPIs), which require the user to inhale the medication in powder form. Using an inhaler correctly is essential for effective treatment. Patients are often taught how to use inhalers properly to ensure the medication reaches the lungs. Regular use can help manage symptoms and improve overall lung function, allowing individuals to breathe more easily.