Is xylitol natural or artificial?

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Tags

1. #widely
2. #found
3. #extracted
4. #chewing
5. #alcohol
6. #plant
7. #xylitol
8. #substitute
9. #naturally
10. #medicine
11. #including
12. #mints
13. #other
14. #vegetables
15. #birch
16. #candies
17. #fruits
18. #material
19. #occurring
20. #sugar