Benadryl can cause certain side effects, some of which are more common than others. These side effects may be temporary, lasting a few days to weeks. However, if the side effects last longer than that ...

Benadryl can cause drowsiness and should not be used when driving. Taking large doses of Benadryl can lead to serious health issues like cardiac arrest and death. People with glaucoma should talk to a ...

Benadryl (diphenhydramine) is an over-the-counter (OTC) antihistamine that is commonly used to treat allergy symptoms, like sneezing, itching, and hives (rashes), motion sickness, and even difficulty ...