http://www.medications.com/effect/view/39690 My nasal allergy symptoms were no longer controlled by daily Allegra D. The doc prescribed Singulair and told me to take it at night. I asked about side effects and she said, "none". After the first dose I had mild diarrhea the next morning. After the s Sat, 07 Mar 2009 15:47:39 -0500 http://www.medications.com/effect/view/39690?item=17772 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/39690?item=17772