↳ Index > Factsheets > Pentazocine
| Pentazocine | Info |
|---|
| Summary | A synthetic opioid used as an analgesic. It is only used IM and IV in the medical field and has respiratory depressant effects. It is pregnancy category C and schedule IV in the US. |
| Dose | IM Light: 10-20mg Common: 20mg-30mg Strong: 30-60mg ( Do NOT Exceed 60mg) IV Light: 5-10mg Common: 10-20mg Strong: 30mg (Do NOT Exceed 30mg) |
| Onset | IM 15-20 minutes IV 2-3 minutes |
| Duration | IM: 2-3 hours | IV: 2-3 hours |
| Aliases | talwin |
| Avoid | All other CNS depressants |
| Categories | habit-forming depressant opioid |
| Warning | When mixed with a barbituate in a syringe it will crystallize which can be fatal. |
| Bioavailability | Oral 20% |
| After-effects | 1-12 hours. |