The typical dosage of hydroxyzine (Atarax, Vistaril and others) depends on your age and the condition being treated. Dosages may be adjusted over time. Talk to your doctor about how and when to take this medication. Adult dosages taken by mouth include:
- For anxiety and tension: The typical dose is 50 to 100 milligrams (mg) four times daily.
- For itching due to allergic reactions: The typical dose is 25 mg three or four times daily.
- As a sedative before surgery: The typical dose is 50 to 100 mg.