Which is better cetirizine or levocetirizine?

Related questions

1. Should I take Allegra in the morning or at night?
2. Can you take 2 fexofenadine a day?
3. Can I take Zyrtec and Xyzal together?
4. Does xyzal cause weight gain?
5. Can xyzal be taken in the morning?
6. Will xyzal make me sleepy?
7. Is xyzal safe to take everyday?
8. Which is better Allegra or Xyzal?
9. What is Xyzal used for?
10. Is xyzal the same as Benadryl?

Tags

1. #sedating
2. #cetirizine
3. #enantiomer
4. #examine
5. #blind
6. #patients
7. #placebo
8. #double
9. #sedation
10. #trial
11. #whether
12. #relative
13. #controlled
14. #found
15. #trials
16. #randomized
17. #separate
18. #levocetirizine
19. #tolerate