Index > Factsheets > Ketobemidone


SummaryAn opioid analgesic drug that also acts as an NDMA antagonist. Found to be as potent as morphine in physical side effects, and has high potential for addiction like all opioids do. Overdose may lead to respiratory depression/death. Do not mix with CNS depressants or stimulants. Caution should be used for asthmatic users.
DoseOral Light: 5mg Common: 5-10mg Strong: 10-15mg.
OnsetOral: 45-60 minutes. Insufflated: 5-15 minutes. Plugged: 15-30 minutes.
DurationOral: 4-8 hours Insufflated: 2-4 hours. Plugged: 5-10 hours. Intravenious: 2-4 hours.
AvoidAll other CNS depressants.
BioavailabilityOral: 34% Insufflated ~30-40% Plugged: 44% Intravenous: 99%+
Half-life2.25-2.45 Hours.
EffectsEuphoria, Dry Mouth, Mood lift, Itchiness, Relaxant, Constipation, Pupil constriction, Analgesia.
BioavailabilityOral 34% +/- 10% | Rectal 44% +/- 9%
After-effects1-8 hours.