All substances
§2.6.3 · ChemicalsDissociatives

Diphenidine

Diphenidine

Also known as 1 · 2-DEP · DPD · DND

Acute: High riskDependency: Moderate risk

Images

Quick reference

Form
Oral
Shulgin rating
++

Duration

Onset
60 Minutes
Total duration
5 Hours

Experience

Primary effects

  • A potent dissociative, delivering an immersive and distinctive psychoactive experience, unlike typical sedatives like ketamine.
  • Induces a feeling of general numbness, making movement (e.g., walking) feel like a seamless floating experience.

Peak character

  • Allows deep focus on cerebral topics when seated; standing reveals a disjointed, weird perception of the world.
  • Promotes a feeling of general contentment, with anxieties dissipating.
  • Can be multifaceted, allowing different aspects of the experience to be solicited at will at certain doses.

Negatives / side effects

  • Reports of tragic outcomes associated with the drug's use.
  • Should always be approached with care and never binged.

Reference dosage

Reference ranges from third-party harm-reduction databases. Individual response varies enormously — start lower than you think.

Any route
threshold50mg+
light70mg+
common85mg+
heavy110mg+

Reagent testing

Recommended reagents
Expected reactions
MandelinOrange/brown
MeckeBlue/green
MarquisOrange/brown

Adulterant detection: Diarylethylamine dissociative. Limited specific reagent data.

Diarylethylamine class; standard dissociative battery.

Source

Reference fields and narrative for Diphenidine extracted from The Drug Users Bible by Dominic Milton Trott (MxZero Publishing, 2022).

drugusersbible.com

Harm reduction notice

This platform provides educational and harm-reduction information adapted from public reference material. It does not endorse, encourage, or facilitate drug use. It is not medical advice. If you or someone near you may be in a medical emergency, contact local emergency services immediately.