💊
Typical Dose 100-200 mg
⏱️
Duration 4h - 6h
⚠️
Interaction Risk Unknown
🔬
Detection Methods 3
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Effect Profile

Describes the acute effect. This profile does not influence the OpenMind Score.

No effect profiles yet. Describe the acute effect without changing the long-term score.

Description

A phenylpiperidine opioid first synthesised by Otto Eisleb in 1939, better known by the names meperidine and pethidine. An analgesic, once widely prescribed it has since declined in usage due to the discovery of a toxic metabolite - norpethidine. Also reacts dangerously with many drugs.

Effects & Dosing

Dosage

Oral

Light Common Strong
50-100 mg 100-200 mg 200-400 mg+

Duration

Oral

Onset 30 min - 1h
Total Duration 4h - 6h
After Effects 2h - 10h
Safety & Risks

Safer Use

  1. All other CNS depressants.

Detection Times

Method Detection Window
Blood 6–12 hours
Urine 1–4 days
Hair 1–90 days

Note: Pethidine/Meperidine. NOT detected by standard opiate immunoassay. Requires specific meperidine testing.

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