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Diphenhydramine

Also known as: diphenhydramine, dph, benadryl

An antihistamine which, when taken in smaller doses relieves allergies and insomnia. In larger doses works as a deliriant and can actually keep the user awake. Generally the 'high' of this drug is reported as dysphoric, potentially causing hallucinations indistinguishable from reality.

Dosage

Oral

Common: 200-500mg
Light: 100-250mg
Strong: 450-700mg

NOTE: The doses provided are for recreational usage. For use as a sleep aid the dose ranges from 25-100mg, or as specified on the product packaging.

Duration

Onset: 60-120 minutes
Duration: 6-8 hours
After effects: 1-12 hours

Timeline

Onset
60-120 minutes
Peak
6-8 hours
After
1-12 hours
011h22h
Typical
Extended range

Effects

Deliriumdream-like experiencesparanoiavisual and audio distortionsdry mouthmuscle crampsnauseadysphoriatremorsOften described as a pretty negative experience

Avoid

Many oral diphenhydramine preparations contain analgesics such as acetaminophen/paracetamol or aspirin, which can be toxic to the liver in high doses.

Drug Interactions

ghb/gbl

Both substances are CNS depressants, potentiating each other strongly and unpredictably, raising the chances of memory loss, severe ataxia, and unconsciousness. The interaction will cause greater inhibition and risk of injury. If the user falls unconscious it is strongly recommended to put them into the recovery position and monitor breathing.

Dangerous

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