In porphyria all drugs are safe except –: (A) Propofol, (B) Midazolam, (C) Afentanyl, (D) Pentazocin
Answer is D. Pentazocin is considered unsafe, but other opioids including morphine, codeine, pethidine, fentanyl, Alfentanil and naloxone have been used safely. Propofol and benzodiazepines (midazolam) are safe.