Advertisement: Find topics A-Z ABCDEFGHIJKLMNOPQRSTUVWXYZ Your Asthma Medications This guide explains the difference between rescue and controller asthma inhalers. 1.Introduction 2.Reliever (Rescue) Medications 3.Controller (Preventive) Medications Related topics: Smoking - Your Choice Smoking - The Facts Quitting Smoking Incentive Spirometer Asthma Pediatric Asthma Bronchiolitis - Pediatrics Bronchitis Incentive Spirometer for Children Interstitial Lung Diseases Lung Diseases Using an Inhaler and Nebulizer