Singulair is a leukotriene (loo-koe-TRY-een) inhibitor. Leukotrienes are chemicals your body releases when you breathe in an allergen (such as pollen). These chemicals cause swelling in your lungs and tightening of the muscles around your airways, which can result in asthma symptoms.
Singulair is used to prevent asthma attacks in adults and children as young as 12 months old. It is also used to relieve runny nose and sneezing caused by allergies in adults and children as young as 6 months old.
Some serious side-effects of drug include
skin rash, bruising, severe tingling, numbness, pain, muscle weakness;
mood or behavior changes, anxiety, depression, or thoughts about suicide or hurting yourself;
tremors or shaking;
severe sinus pain, swelling, or irritation; or
worsening asthma symptoms.
Hope this information is of help to you.
THANKS! GLAD MY SON JUST GAVE HIS TO ME...HE ALREADY HAS PROBLEMS WITH DEPRESSION; I'VE TAKEN IT BEFORE, WITH NO APPARENT SIDE EFFECTS. I HAVE A MITRAL VALVE PROLAPSE, AND HIGH BLOOD PRESSURE, SO I DO HAVE TO BE CAREFUL WHAT I TAKE.
Singulair could cause depression & suicide for some people that used it.