Methadone results in a better and faster pain relief in the treatment of oncological pain with a neuropathic component as compared with fentanyl.
The mean decrease in pain interference is more prominent in methadone treated patients than in fentanyl treated patients.
At 1 week significant more patients in the methadone group had a 50% pain relief.
There was no significant difference between the groups in percentage of patients with severe side effects.