Depends: The basic principle in medicine is to give the lowest dose needed to achieve the objective. Some people can take 100mg of hydroxyzine without problem , others just 10 mg would knock them out. Usually the drowsiness effects tend to decline with time. I prefer to start patient on 10 mg first then work it up over a week until the desired effect has been reached without causing side effects .
Answered 4/22/2018
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