K-Hole Atlas · (RS)-2-(2-chlorophenyl)-2-(methylamino)cyclohexan-1-one · compiled 18 Oct 2026
An anaesthetic that leaves the lights on. It is on the WHO list of essential medicines, in a nasal spray for depression, on dance floors since the 1990s, and in a growing number of bladder clinics. Mapped claim by claim, and every claim is tagged with how much we actually know and whether it was measured or remembered by someone on their way back.
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How to read this
Ketamine knowledge comes in very different grades. A plasma level measured in an operating theatre and a sentence from someone describing the K-hole do not deserve the same font. Every claim carries two tags: how strong the evidence is, and whether it comes from people describing their own experience. Press a tile to switch that kind of claim off across the whole page.
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Scroll is a doseThe clock maps your position onto a moderate snorted dose: the drip at two minutes, the plateau at twenty-five, the hole (if the dose is high enough) around thirty-five, and the long way back.
Depth is a choiceThe page starts at the surface: the claims a first-time reader needs. Go under for detail, or deep for all of it. Search always reaches everything.
Search is everythingPress ⌘K, Ctrl K or / to search every claim, slang term, interaction and law.
Not adviceThis is a reference and an artwork. It is not medical or legal advice. Dose ranges are what sources report, not recommendations.
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If it goes wrong
Emergency number in the EU and many other countries:
112
USA and Canada 911 · UK 999 or 112 · Australia 000. Tell responders exactly what was taken, how much and when, including alcohol. They are there to treat, and the details change the treatment.
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Ketamine, mixed with…
Most ketamine deaths involve something else as well. Pick what else might be in the evening; every rating says why, what trouble looks like and where it comes from.
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