Can Benadryl Cause Swelling In A Dogs Ear?
Can Benadryl Cause Swelling In A Dogs Ear? A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects.