It is a "controller medication" for asthma, used to help prevent
asthma attacks but not to treat them. Everyone who takes Singulair should also have a rescue medication (such as an
albuterol inhaler) available for emergencies.
For allergic rhinitis (itchy, runny, irritated, or stuffy nose due to
allergies), Singulair is approved to treat both seasonal and year-long allergy symptoms.
Occasionally, Singulair is also used for treating allergies other than nasal allergies. This is considered to be an "
off-label" use for the medication.
(Click Singulair Uses for more information on what Singulair is used for, to find out how this medicine works, and for more details about the drug's effects.)
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