Relevant concomitant care permitted or prohibited during the trial {11d}
neuropathic pain
The patient may not consume any other opioid medication than those provided by the coordinating center during the course of the 12-week study period. Paracetamol and medication for treatment of neuropathic pain (including gabapentinoids) are allowed when used for more than 6 weeks at a steady dose. Concomitant medication will be recorded. Also non-pharmacological interventions are allowed.