Controller medications are drugs that are taken to control symptoms of asthma or chronic obstructive pulmonary disease (COPD) on a long-term basis. While rescue medications are used only as needed to help with symptoms that become worse suddenly, controller medications are taken daily, regardless of whether you are experiencing symptoms. The goal of controller medications is to prevent symptoms of asthma and COPD, rather than treat symptoms when they occur.
There are several different types of controller medications, including: