I was urged not to take zyrtec for allergies since I'm already taking vistaril (hydroxyzine) as needed. What dose vistaril (hydroxyzine) is effective for allergies?

Vistaril (hydroxyzine) Vistaril (hydroxyzine) becomes zyrtec after going through the liver but it is less drowsy-producing. The range of dosing on vistaril (hydroxyzine) is huge ranging from 10 mg to 100 mg depending on the individual.
Vistaril (hydroxyzine) Vistaril (hydroxyzine) has a lot of sedation as it's side effect. It may be wiser for you to not use the vistaril (hydroxyzine) and use the zyrtec since it should not cause any sedation during the day.