Inhalers are small, portable devices that deliver medication directly to the lungs, providing quick relief from symptoms of asthma, COPD or allergies. This step-by-step guide explains how to use inhalers correctly and effectively, highlights best practices, and discusses common mistakes to avoid, FAQs, and special considerations for patients. You will also learn about the differences between MDI, DPI, and SMI inhalers, tips on maintenance and care, and much more.