30 min Very Strong3
Diphenhydramine hydrochloride is a first-generation antihistamine.
The drug also has a powerful hypnotic effect, and for this reason is often used as a non-prescription sleep aid. This dose acts recreationally as a deliriant, or as a potentiator of alcohol.
Diphenhydramine has mild to moderate euphoriant actions also.
Full effects at peak include visual distortions, auditory hallucinations and sound distortions, unusual thoughts and speech, flushed skin, and microsleep or nodding.