Is morphine stronger than Nucynta

20 mg of Nubain as an analgesic effect equivalent to 10 mg of Morphine

but it acts 5 times faster. Nubain is often given as an injection for severe pain. It can have startling side effects, just like any other drug, but you should definitely report anything out of the ordinary. For instance, when I was given injections of Nubain on two separate occassions, I experienced severe hallucinations.