Behandling af perifere neurogene smerter, som f. eks. smertefuld diabetisk neuropati og postherpetisk neuropati, er ikke undersøgt i behandlingsperioder længere end 5 måneder i kliniske undersøgelser.
In the treatment of peripheral neuropathic pain such as painful diabetic neuropathy and post-herpetic neuralgia, efficacy and safety have not been examined in clinical studies for treatment periods longer than 5 months.