Pethidine
Typical Dose 100-200 mg
Duration 4h - 6h
Interaction Risk Unknown
Detection Methods 3
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
- 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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