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 ...
An incorrect dose of Benadryl could be extremely harmful ... Though made for humans, it’s also often recommended by DVMs to treat dogs. Some forms of Benadryl include: Children’s Benadryl (liquid ...