Isotonitazepyne Stats & Data
[Cl-].CC(C)Oc1ccc(cc1)Cc1nc2cc(ccc2n1CCN1CCCC1)N(=O)=O.[H+]IRSBLNVYYWAJDB-UHFFFAOYSA-NEffect Profile
CuratedStrong euphoria and pain relief with strong itching/nausea, mild sedation
Tolerance & Pharmacokinetics
drugs.wikiNo tolerance chart. Our decay curves for opioids were estimates, and a curve can make tolerance look longer-lasting than it is, which is the dangerous direction.
Opioid tolerance drops fast when you stop, and even a few days off can be enough, so a dose that used to be normal can now stop your breathing. Overdose deaths rise sharply after prison, detox or leaving treatment, and tolerance also falls during a hospital stay. After any break, start with a much smaller amount, try a test dose first, don't use alone, and keep naloxone within reach. Alcohol, benzodiazepines, gabapentinoids and other sedatives make an opioid overdose much more likely.
Sources: FRANK: heroin · National Harm Reduction Coalition · WHO: opioid overdose · Merrall et al. 2010 · Binswanger et al. 2007 · Strang et al. 2003 · FDA 2019: gabapentinoids and breathing
Cross-Tolerances
Harm Reduction
drugs.wikiIdentity and class: Isotonitazepyne (N-pyrrolidino isotonitazene) is a benzimidazole nitazene opioid; PubChem CID 168322631 confirms structure and identifiers. Counterfeit risk: Drug-checking programs have repeatedly detected isotonitazepyne/protonitazepyne in fake “oxycodone/percocet” tablets; assume any non‑pharmacy tablet may contain nitazenes. Market alerts: EU drug monitoring reports document rising nitazene involvement in poisonings and widespread appearance in fake medicines across multiple EU countries. Test strips: Standard fentanyl test strips do not detect nitazenes; rely on lab drug checking or nitazene-specific methods where available. Onset and redosing: Some nitazenes show a short but sometimes delayed onset; wait at least 10–15 minutes after an insufflated test dose before any redose to reduce stacking risk. Overdose response: Expect profound respiratory depression; multiple 2–4 mg intranasal naloxone doses at 2–5 min intervals may be required, and recurrent sedation can occur—call emergency services and monitor continuously. Polysubstance risk: Benzodiazepines, alcohol, barbiturates, Z‑drugs, GHB/GBL and gabapentinoids synergistically worsen CNS/respiratory depression; avoid mixing. Adulterant co-exposures: In current markets, opioids are frequently combined with veterinary sedatives (xylazine, medetomidine) and/or benzodiazepines, further increasing overdose risk. Dosing method: Active in double‑digit micrograms—use volumetric dosing (e.g., dissolve a known amount into a measured volume, label clearly, and use an oral or nasal metered syringe) to avoid lethal error; avoid handling loose powder and prevent cross‑contamination. Naloxone access: Carry take‑home naloxone; many EU countries and local services now provide it—seek training. Avoid smoking/vaping: Pyrolysis behavior and delivered dose are unpredictable for nitazenes; inhalation can cause rapid overdose—safer routes remain those allowing measured dosing (e.g., diluted nasal sprays). [inference from general high‑potency opioid handling and drug‑checking cautions]. Do not use alone: Use with a trusted, naloxone‑trained person present and avoid using in isolation; consider supervised consumption where available.
References
Cited references
- PubChem – N‑Pyrrolidino Isotonitazene (Isotonitazepyne) CID 168322631
- EUDA European Drug Reports 2024–2025 – nitazenes/fake medicines & harms
- EUDA news – rapid market shifts, nitazenes as new synthetic opioids
- EUDA – Drug-induced deaths section (nitazenes outbreaks)
- Toronto Drug Checking Service – nitazenes in fake oxycodone/‘Percocet’
- Toronto Drug Checking Service – six fake ‘oxycodone’ with isotonitazepyne/protonitazepyne
- Toronto Drug Checking Service – nitazene opioids overview & strengths
- Hi‑Ground (AU) – Nitazenes: FTS do not detect nitazenes; drug checking recommended
- Saferparty Zürich – Nitazene page (delayed onset cautions; carry naloxone; fake medicines)
- TripSit Wiki – Drug combinations (opioids with benzos/alcohol/GHB etc.)
- NCBI StatPearls – Naloxone (need for repeat dosing/infusion with potent or long‑acting opioids)
- Toronto Drug Checking – Isotonitazene alert (high potency; consider multiple naloxone doses)