Zopiclone
Aliases: Imovane, Zimovane
Summary
Zopiclone is a non-benzodiazepine hypnotic intended for short-term insomnia treatment (2-4 weeks maximum). It produces significantly more amnesia and disinhibition than benzodiazepines at comparable doses. A characteristic metallic or bitter taste occurs in many users.
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 3.5-5mg | 5-7.5mg | 7.5-15mg | 15mg+ |
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 10-30 min | 30-60 min | 3-4 hrs | 2-4 hrs | 5.7-9.5 hrs |
Effect Profile
44 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 44 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Strong anxiolysis, sedation, cognitive impairment, and euphoria
Tolerance
Tolerance Decay
Hypnotic tolerance to sleep‑inducing effects can develop within days to weeks of daily use; functional tolerance to impairment is incomplete (driving deficits persist despite regular use). Return toward baseline generally occurs over 2–4+ weeks of abstinence but varies widely. Data are a synthesis of clinical guidance for benzodiazepine‑site agonists and limited zopiclone‑specific studies; confidence moderate to low.
Cross-Tolerances
Effects
Aggregated from 44 Erowid experience reports