Which of the following is not a type of controller medication for asthma?

Controller medications for asthma are designed to manage and prevent symptoms by reducing inflammation and bronchoconstriction over time. Long-acting beta2 agonists, leukotriene modifiers, and corticosteroids all fit this category as they function through mechanisms that provide ongoing control of asthma symptoms and reduce the frequency of attacks.

Long-acting beta2 agonists provide extended bronchodilation to keep airways open for a longer period, while corticosteroids address inflammation, which is a key component of asthma pathology. Leukotriene modifiers work by blocking substances in the body that can trigger asthma symptoms.

In contrast, short-acting beta2 agonists (SABAs) are intended for quick relief of acute asthma symptoms. They act rapidly to dilate airways but do not provide long-term control. SABAs are primarily used as rescue medications for immediate relief during an asthma attack, distinguishing them from the other mentioned medications that are utilized for ongoing control of the condition.