You must know  the side effects of Xanax before start to using it this medication. 

Common side effects are:

1. Headache
2. Vomiting
3. Drowsiness
4. Slurred speech
5. Tiredness
6. Insomnia
7. Nausea
8. Blurred vision
9. Muscle weakness
10. Blurred vision
11. Dry mouth
12. Irritability
13. Poor balance or coordination
14. Constipation
15. Trouble concentrating
16. Dizziness
17. Increased sweating
18. Stuffy nose
19. Memory problem

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