Why do Otrivine eye drops sting?

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Tags

1. #relieving
2. #allergy
3. #allergic
4. #caused
5. #decongestant
6. #itching
7. #fever
8. #drops
9. #comfortable
10. #sulphate
11. #xylometazoline
12. #hydrochloride
13. #helps
14. #agent
15. #antistin
16. #otrivine
17. #house
18. #allergies
19. #antazoline
20. #redness