3-Quinuclidinyl benzilate - Substance Search

Summary TheDrug.Wiki Erowid

BZ is an extremely potent, long-lasting anticholinergic deliriant originally developed as a military incapacitating agent. Even sub-milligram doses produce profound delirium, confusion, vivid hallucinations, amnesia, and severe anticholinergic toxicity lasting days. Effects include dangerous hyperthermia, tachycardia, urinary retention, and complete loss of contact with reality.

Dose Information TheDrug.Wiki

ROA	Light	Common	Strong	Heavy
Inhalation	20-40mg-min/m3	-	-	-

Light Common Strong Heavy

Onset, Duration & After-effects TheDrug.Wiki

ROA	Onset	Comeup	Peak	Offset	After Effects
Oral	30 min	1-4 hrs	8-12 hrs	12-48 hrs	24-96 hrs

Effect Profile

4 reports

Scores (1–10) curated from multiple sources:

Effect keyword matching from PsychonautWiki catalog
Weighted by importance: core (×3), major (×2), minor (×1)

Full methodology

Psychedelic 2.6

Light+ 3/10

Low visuals, headspace, and body load

Visual Intensity ×3

2

autonomous entities

Headspace Depth ×3

2

confusion time distortion

Auditory Effects ×1

0

⚠ Body Load / Somatic Effects ×1

1

increased heart rate

Based on reports from:

Erowid Experience Reports PsychonautWiki 3-Quinuclidinyl benzilate

Tolerance

Build-up develops rapidly after a single use

Reset 7–14 days for baseline

Tolerance Decay

Full tolerance 0h Half tolerance 14d Baseline ~28d

Robust quantitative data are lacking. Military summaries note that a second exposure 2–4 weeks later can show faster onset and heightened peak effects (“second‑dose effect”). Treat cross‑tolerance estimates as speculative.