Not Listed / Othe
"Cetirizine works wonderfully to alleviate symptoms of allergies...in my case severe sinus pressure and post-nasal drip.  Cetirizine does cause me significant and debilitating drowsiness if taken during the daytime. However, I found that this would usually abate after a mere hour or two.  I have ingested this medicine on occasion during periods of insomnia as a sleep aid. Works well for that too!"