<prompt> In porphyria all drugs are safe exceptPropofolMidazolamAfentanylPentazocin  <response>: 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. 