allergies
"I have really bad allergies due to tree pollen.  I tried Xyzal for the first time and it works! My throat doesn't get itchy anymore and my nasal congestion is gone.  I take 1 pill before bedtime and my only struggle is staying up during the day.   My brain gets foggy and I am super sleepy.  I am currently typing with my eyes shut. ZZzzzzzz"