Dissociatives

Diphenidine (DPD)

Street names: Diphenidine, DPD, 1,2-DEP

Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines

⚡What it does

Substance	Class	Top risks	Street price
Diphenidine (DPD)	Unscheduled; controlled in UK	Much longer than ketamine — users get stuck immobile for hours; High-dose delirium and memory blackouts	~$30–$60/g online
Ketamine	Schedule III	Bladder damage (ketamine cystitis) with regular use; K-holes and accidents while impaired	~$20–$60 per gram
Ketalar (ketamine injection)	Schedule III	IV use raises infection and dependence risk; Bladder harm identical to powder use	~$30–$100 per vial
2F-DCK (2-fluorodeschloroketamine)	Analogue prosecutions	Very little human safety data; Bladder toxicity assumed similar to ketamine	~$25–$60 per gram
DXM (Dextromethorphan / Robotripping)	OTC	Serotonin syndrome — DXM is serotonergic; DEADLY with SSRIs, MAOIs, MDMA; Liver damage — Coricidin contains chlorpheniramine (antihistamine) that's hepatotoxic at abuse doses	~$5–$12 per bottle
3-MeO-PCP	Analog prosecution	MANIA and dangerous disinhibition — users hurt themselves/others; Overdose: severe dissociation, catatonia	~$20–$50/g

Street prices are regional estimates. Potency and cuts vary constantly.

What does Diphenidine (DPD) look like?

White powder sold in capsules

What are the signs of a Diphenidine (DPD) overdose?

Prolonged unresponsiveness; Agitation, confusion; High blood pressure Call emergency services immediately.

How addictive is it?

Much longer than ketamine — users get stuck immobile for hours Dependence can develop with regular use.

Facts on this page are compiled from these primary sources. External links open in a new tab.