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medical emergency

Mixing Ketamine + Alcohol

When When someone has combined ketamine and alcohol and is heavily sedated, unresponsive, in a K-hole episode, or has physically collapsed.

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Content is undergoing medical and legal review. Changes possible.

Emergency

Call 112. Calling for help is required by law (German Criminal Code § 323c). levelll cannot promise immunity from criminal or administrative consequences.

Immediate

  1. 1. Recovery position. Keep the airway clear.
  2. 2. Call 112 if the person cannot be woken, breathing becomes shallow, or vomiting occurs without a swallowing reflex.
  3. 3. Watch the person, reassure them if conscious. Reduce stimulation.

Don't do

  • Don't leave the person alone — risk of aspiration while vomiting.
  • Don't try to 'shake them awake' out of the K-hole — it endangers breathing.
  • Don't give water or food as long as the swallowing reflex is uncertain.

Ketamine + alcohol amplify each other in two directions:

  • Sedation and respiratory depression — both depress the CNS, and the combined effect is not linearly predictable
  • Aspiration risk — ketamine reduces the swallowing reflex, alcohol reduces consciousness, vomiting becomes more frequent and more dangerous

Compared to ketamine + GHB/GBL, the combination with alcohol is less acutely respiratory-depressant, but the aspiration risk is high. Fatal outcomes are documented.

A K-hole on ketamine alone is usually transient (15–60 min). With alcohol, the episode can last longer and breathing can become borderline.

Low-threshold recommendation: use them separately or leave one out entirely. If you do combine: low ketamine dose (≤ ½ the usual dose), alcohol to a minimum, never alone, not near water (bath, pool).