> "a vaccinated person would still be able to be treated for pain relief with other opioids [such as morphine]" Good to hear, but at its worst, my pain was onl

> "a vaccinated person would still be able to be treated for pain relief with other opioids [such as morphine]" Good to hear, but at its worst, my pain was only relieved by fentanyl (administered by a professional in a hospital). Noticeably better than Dilaudid (hydromorphone). Is morphine a reliable replacement for fentanyl? Fentanyl is used quite often in palliative care because it lacks the side effects of morphine, is this correct?