Benadryl relieves symptoms of allergies and hay fever including runny/stuffy nose, nasal congestion, and itchy/watery eyes. May cause drowsiness.

Benadryl Overview


Benadryl is an over the counter medication used to treat the symptoms of seasonal allergies and hay fever. Benadryl can also be used for trouble sleeping, motion sickness, coughing, and Parkinsonism. Benadryl belongs to a group of drugs called Histamine H1 Antagonists (antihistamine). Antihistamines work by blocking the action of histamine, which is known to trigger allergy symptoms. 

This medication comes in a tablet, capsule and oral (by mouth) solution and is taken every 4 to 8 hours as needed, with or without food. 

Common side effects of Benadryl include confusion, dry mouth, and blurry vision. Benadryl can also cause drowsiness. Do not drive or operate heavy machinery until you know how Benadryl affects you. 

How was your experience with Benadryl?

First, a little about yourself

Tell us about yourself in a few words?

What tips would you provide a friend before taking Benadryl?

What are you taking Benadryl for?

Choose one
  • Other
  • Anxiety Disorders
  • Motion Sickness
  • Nausea
  • Rhinitis, Allergic, Perennial
  • Sleep Initiation And Maintenance Disorders
  • Urticaria

How long have you been taking it?

Choose one
  • Less than a week
  • A couple weeks
  • A month or so
  • A few months
  • A year or so
  • Two years or more

How well did Benadryl work for you?

Did you experience many side effects while taking this drug?

How likely would you be to recommend Benadryl to a friend?



For more information on this medication choose from the list of selections below.

Benadryl Drug Class

Benadryl is part of the drug class:


All RxWiki content including health news, medication pages, and condition pages published prior to February 2023, was written and maintained by on-staff pharmacists. Please be advised that this content is no longer actively maintained and may now contain outdated information. If you have any questions regarding previously published content, please contact