Singulair Tablets

Singulair® (
 montelukast sodium) is a prescription drug commonly used for the treatment of asthma. It is also approved to treat an irritated, itchy, stuffy, or runny nose caused by allergies.
 
The medication comes in tablet form and is typically taken by mouth once a day (in the evening, if used for asthma), although some people take it only before exercising (for treating exercise-induced asthma). Singulair tablets are also available in chewable form, and oral granules can be used in younger children.
 
Singulair works by blocking leukotriene receptors, preventing leukotrienes (chemicals produced by the body in response to allergens or other problems) from causing allergy or asthma symptoms.
 
While most people tolerate Singulair well, side effects are possible. Some of the most common side effects that have been reported with this drug include abdominal pain, the flu, and headaches.
 
(Click Singulair to learn more about the effects of Singulair tablets, to find out what you should discuss with your healthcare provider before using this drug, and for more information on how the medicine works.)
 
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;