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- 6. NNT 0 2 4 6 8 10 12 Topiramate* Antidepressants, SSRI Capsaicin NMDA antagonists* Mexiletine* Antidepressants, SNRI Gabapentin/pregabalin Tramadol Opioids Carbamazepine/lamotrigine/ phenytoin Valproate Tricyclic antidepressants 397 109 83 389 120 420 1057 149 81 466 150 214 Peripheral neuropathic pain drugs: NNT Adapted from Finnerup et al. Pain 118 (2005) 289–305 Lidocaine plaster NNT to achieve pain relief >50%
- 7. Peripheral neuropathic pain drugs: NNH (withdrawal of Rx) NNH 0 5 10 15 20 Antidepressants, SSRI Valproate Mexiletine Carbamazepine/lamotrigine/ phenytoin Gabapentin/pregabalin Opioids Antidepressants, SNRI Tricyclic antidepressants NMDA antagonists Capsaicin Tramadol Topiramate ns Finnerup et al. Pain 118 (2005) 289–305 Lidocaine plaster
- 8. Algorithm for neuropathic pain treatment: an evidence based proposal Lidocaine patch* TCA (SNRI) Gabapentin/ Pregabalin Gabapentin/ Pregabalin Postherpetic neuralgia and focal neuropathy Peripheral neuropathic pain yes TCA (SNRI) yes Tramadol, Oxycodone TCA contraindication no yes TCA contra-indication no no Finnerup et al. Pain 118 (2005) 289–305
- 15. Additive or synergistic? Isobolographs Fletcher D. Anesthesiology 1997;87:317-326. Synergy Diclofenac & Morphine Additive Propacetamol & Morphine