cetirizine capsules

How Many Cetirizine Can I Give My Dog? Cetirizine (Zyrtec) 1⁄4 – 1⁄2 mg per pound (one 10mg tab per 30-40 lbs) twice daily. How much cetirizine can I give my 50 lb dog? The 10 mg pills are okay for dogs between 10 and 50 lbs, though 5-10 lb dogs should only take half