Silver Book Fact
Antiepileptic drugs relieve persistent neuropathic pain. One meta-analysis found gabapentin to be associated with moderate benefit (equivalent to 30% pain relief) in close to 1 in 2 patients, and a substantial benefit (equivalent to 50% pain relief) in close to 1 in 3 patients. Another meta-analysis found pregabalin effective in patients with postherpetic neuralgia, painful diabetic neuropathy, central neuropathic pain, and fibromyalgia.
Moore R, Wiffen P, Derry S, McQuay H. Gabapentin for Chronic Neuropathic Pain and Fibromyalgia in Adults. Cochrane Database of Systematic Reviews. 2011; http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD007938.pub2/abstract