http://www.medications.com/effect/view/39654 i took Singulair for one week. The first couple days, I had a head ache, sore throat, cough, and some other upper respiratory issues. I started to feel better, but I had to stay home from work and rest. About 5 days later, I took my singulair in the morn Fri, 06 Mar 2009 01:09:39 -0500 http://www.medications.com/effect/view/39654?item=17734 I think this must be due to the Singulair, Just find if you are taking any drugs that interact with singulair also. You can find related info at http://www.internationaldrugmart.com/singulair.html Please check your doctor too if it is very severe. http://www.medications.com/effect/view/39654?item=17734 Fri, 06 Mar 2009 18:07:32 -0500 http://www.medications.com/effect/view/39654?item=17754 The FDA is conducting a safety reveiw of Singulair. Please report your adverse reactions as soon as you can. This is the link to the FDA online reporting site: https://www.accessdata.fda.gov/scripts/medwatch/medwatch-online.htm. Thank you! http://www.medications.com/effect/view/39654?item=17754