Asthma Support Group
Asthma is a disease of the human respiratory system where the airways narrow, often in response to a "trigger" such as exposure to an allergen, cold air, exercise, or emotional stress. This airway narrowing causes symptoms such as wheezing, shortness of breath, chest tightness, and coughing, which respond to bronchodilators.
I have horrible allergies, so I still have to take an over the counter med and I get allergy shots. And Singulair takes care of a big chunk of the allergic asthma.
I've been on it about 10 years and I don't notice it working less, but the same. I think it takes a bit of time for it to get into your system, maybe a couple of days or so? I can't remember that far back.
Hope you feel better!
My antihistimine meds neutralize the histamine that is produced after my allergic reaction.