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    Pethidine

    Aliases: pethidine, meperidine

    Categories

    opioid habit-forming depressant

    Summary

    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.

    ⚠️ AVOID: All other CNS depressants.

    Dose Information

    Onset, Duration & After-effects

    • Onset: 30-60 minutes
    • Duration: 4-6 hours
    • After-effects: 2-10 hours

    Effects