An incorrect dose of Benadryl could be extremely harmful, which is why you need to make sure you administer a dose based on your dog’s weight. The rule of thumb is to administer 2–4 mg of Benadryl per ...

The Merck Veterinary Manual recommends giving your dog 0.9-1.8 mg of Benadryl per pound of weight (2-4 mg/kg of weight). If you want to try over-the-counter Benadryl, the best form is usually a ...

When determining the dosage, give your dog 0.9-1.8 mg per pound of weight; a typical Benadryl capsule contains 25 mg. It is ...