allergic rhinitis
"I was able to eliminate the use of four allergy medicines while using Singulair. I don't have asthma or any lung congestion; but my sinuses just wouldn't stop for anything, regardless of what antihistamine I was taking, whether in pill or nasal spray form. Singulair allowed me to sleep without a cough drop in my mouth and to breathe all night through my nose (something I haven't done in over 10 years)."