Allergies
"Xyzal is one of the most effective antihistamines out there, IMO.  It stops all my allergy symptoms from the first pill- I can feel my sinuses open up.  It has gotten me through horrible seasons where the grasses I&#039;m allergic to are rampant.  The only downside for me is the major sedation.  It is supposed to be non-sedating, but a few people will have issues with this.  Curiously, I find the sedation to come on several hours after I take it, so I time that with bedtime.  At first the sedation was so bad that it felt like I was going under anesthesia!  My allergist told me she had the same issue, and had me cut the tablet in half to take the pediatric dose.  That helped a lot, but I still time it for when it makes me tired."