The usual dose for children 2–5 years old is 5 milligrams (mg) by mouth once daily. The usual dose for adults and children ages 6 years and older is 10 mg by mouth daily. Because Benadryl has many ...
Benadryl is safe for dogs, but don't give any to your dog without consulting a vet first as the wrong dose could be toxic. Your vet may recommend Benadryl to help treat your dog for conditions ...