Asthma is a chronic inflammatory condition affecting the respiratory system that causes coughing, chest pain, and difficulty breathing. Asthma attacks are generally brought on by environmental factors such as low air quality, particles in the air, or allergens. Asthma medications normally contain anti-inflammation ingredients or bronchodilators. Anti-inflammatory medications prevent the release of enzymes in the body that cause swelling and inflammation of the mucous membranes. Bronchodilators operate by relaxing the respiratory system to open the airways allowing easier respiration.