After five weeks of taking singulair-sinus infections after sinus infection, ear aches, bad sore throat, upper respiratory infection, shortness of breath,hard time sleepn... I am at college and I am sick of being sick. I am going to tell my doctor that I do not have time for this! I questioned whether or not to go home to see if i just need good rest and time off. I thought i might have monno because i am feeling extremely fatigue and have swollen glands. I actually still have all these symptoms. Now that I have knowledge of what all of my sickness is most likely from, I think I will try stop taking this GREAT pill called singulair!!!! ....I want to tell everyone to not trust doctores when they tell you how great this drug is your going to take