Allergies
"Initially, levocetorizine worked very well in reducing cough and throat clearing. But as well as it worked for that, I felt sluggish during the day.. ( I&#039;m took pill at night as prescribed ). I had very vivid dreams. I felt in the day as if I had a mild hangover. I cut the pill in half, so I had 2.5 mg instead of 5. Still felt groggy.  I then injested 1/4 of the pill, still groggy. I didn&#039;t take it at all last night, still vivid dreams, but no groggy in a.m. I&#039;m going to ask Dr if there is another med for me, as side effects too tiring."