Oct 3, 2025 · Learn about the side effects of Benadryl (diphenhydramine), from common to rare, for consumers and healthcare professionals.

Dec 15, 2025 · 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 …

May 10, 2023 · Benadryl (diphenhydramine) is a common over-the-counter (OTC) allergy medication. It’s also sometimes taken to help with sleep. Common Benadryl side effects include drowsiness, …

Benadryl® (diphenhydramine) is a liquid medication that treats the symptoms of allergies and allergic reactions. It may also prevent and treat motion sickness or the symptoms of Parkinson’s disease. It’s …

Feb 21, 2024 · Benadryl, which is used to treat allergies, can cause side effects. Learn about its more common, mild, and serious side effects and how to manage them.

Oct 14, 2024 · Benadryl is an over-the-counter drug used for allergy and cold symptoms. Learn about the common, mild, and serious side effects it can cause and how to manage them.

Jul 16, 2025 · Using Benadryl regularly or for a long time may increase your risk of certain side effects: Sedation and brain fog: You might feel drowsy or mentally slow. You could feel groggy or have …