Medically reviewed by Alex Yampolsky, PharmD Hydroxyzine, whose brand names include Atarax and Vistaril, and Benadryl, the ...

Learn more about hydroxyzine, including when dogs may need it, what the right dosage is, and what alternatives you might consider. Always consult with a vet before giving your pet any medication!

Patients were randomly assigned hydroxyzine 25 mg at bedtime (n = 17) or placebo (n = 18). Sleep quality was assessed at baseline and at 10 days. Forty percent of hydroxyzine-treated patients ...