↳ Index > Factsheets > Demerol
| Demerol | Info |
|---|
| 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. |
| Dose | Light: 50-100mg Common: 100-200mg Strong: 200-400mg+ |
| Onset | 30-60 minutes |
| Duration | 4-6 hours. |
| Aliases | pethidine meperidine |
| Categories | opioid habit-forming depressant |
| Effects | Euphoria, Dry Mouth, Mood lift, Itchiness, Relaxant, Constipation, Pupil constriction, Analgesia. |
| After-effects | 2-10 hours. |
| Avoid | All other CNS depressants. |
| Bioavailability | Oral 50-60% | Rectal 55% | Intramuscular 80-85% |