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What is the Benadryl hat man?

Medically reviewed by Carmen Pope, BPharm. Last updated on April 20, 2023.

Official answer

by drugclasses.com

The Hat Man is a fictional figure that started appearing on certain internet sites in the early 2000s that has recently been referred to as the “Benadryl Hat Man” after reports of people hallucinating and sighting him after overconsumption or abuse of Benadryl. Most of these reports have appeared on Reddit or the image-based bulletin site 4chan.

The Hat Man has also been associated with abuse of any mind-altering substance taken to excess and there is a mini-documentary about him being associated with sleep paralysis on YouTube.

High doses of Benadryl can cause heart arrhythmias, delirium, psychosis, seizures, coma, and death.


References
  • How the ‘Hat Man’ Went From Benadryl Joke to TikTok Horror Villain. Nov 2, 2022. Rolling Stone. https://www.rollingstone.com/culture/culture-features/hat-man-benadryl-tiktok-monster-1234620397/
  • Diphenhydramine toxicity. The University of Utah. Nov 15, 2021.
  • https://poisoncontrol.utah.edu/news/2021/11/diphenhydramine-toxicity#:~:text=Diphenhydramine%20is%20an%20antihistamine%20that,ingestions%20%3E%2020%20mg%2Fkg.

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