Drug information provided by: Merative, Micromedex®
Methacholine inhalation is used to help your doctor diagnose bronchial airway hyperreactivity or asthma. This medicine works by narrowing your bronchial airways. The degree of narrowing will be measured by a device called a spirometer. This test is also called the methacholine challenge test.
This medicine is to be given only under the supervision of your doctor.
This product is available in the following dosage forms:
Portions of this document last updated: Feb. 01, 2023