How Much Vistaril Can I Give My Dog?

How Much Vistaril Can I Give My Dog? Dosage. A typical dose of hydroxyzine for dogs is 1 mg per pound between 1 and 3 times daily. Can dogs take hydroxyzine 25 mg? Hydroxyzine HCl (generic for Atarax) is not FDA approved for use in veterinary medicine; however, it is a commonly accepted practice for