Allergies
"Most allergy medicines have not helped me at all. I decided to try xyzal.  I could tell a difference after the first dose. It doesn&#039;t make me tired like benadryl, so I guess it depends on the person. 
And since everyone is different, I don&#039;t understand why people say not to waste money on this product. Just because it didn&#039;t work for you, doesn&#039;t mean it won&#039;t work for others."