It works by stopping the action of a chemical called leukotriene, which causes your nasal passages to swell and make a lot of mucus. The same chemical is also responsible for tightening airways when you have asthma, making it harder to breathe.
If you've been living with allergies, you probably know the obvious stuff by now -- don't take in stray cats, don't hang around in dusty attics, don't inhale deeply in smoking lounges. But that might not be enough. There could be hidden allergy triggers and irritants all around you that you don't know about. "Hidden allergens and irritants are a huge problem for people with allergies," says Hugh H. Windom, MD, an associate clinical professor of immunology at the University of South Florida. "The...
Singulair is a prescription medication. You take it once a day. It’s the only drug of this type that’s approved for allergies.
Side effects include headache, earache, sore throat, nervousness, nausea, and nasal congestion. Neuropsychiatric events have been reported in adult, adolescent, and pediatric patients taking Singulair.
Ask your doctor before taking Singulair if you’re pregnant or before giving it to a child.