Unlike morphine, which is addictive and contains side effects such as muscle twitching, migraines, brain fog, and vomiting, mambalgins contain few if any side effects due to the different routes by which they block sensations of pain.When it was tested in mice, the analgesia was as strong as morphine, but you do not have most of the side-effects, said Dr. Eric Lingueglia, co-author of the study.