alexa Methadone in the treatment of neuropathic pain.
Anesthesiology

Anesthesiology

Journal of Pain & Relief

Author(s): Gagnon B, Almahrezi A, Schreier G

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Abstract BACKGROUND: Methadone, being an N-Methyl-D-Aspartate receptor antagonist, may have a potential role in the treatment of neuropathic pain. OBJECTIVES: To evaluate the effect of methadone in the treatment of neuropathic pain and to estimate the possible dose ranges needed for pain control. METHODS: Methadone was offered as a treatment option to consecutive cancer and noncancer patients with neuropathic pain. Pain intensity was measured by the visual analogue scale (VAS) (0-10 cm where 0 = no pain and 10 = worst possible pain). Mechanical allodynia and paroxysmal (shooting) pain were assessed clinically. All assessments were collected prospectively before treatment and once a stable dose of methadone was reached. RESULTS: A total number of 18 patients met our inclusion criteria. The mean pretreatment VAS +/- SD was 7.7+/-1.5 cm and this dropped significantly to 1.4+/-1.7 cm on a stable dose of methadone (P<0.0001). Nine of 13 patients (70 \%) had a complete resolution of mechanical allodynia and all eight patients (100\%) with shooting pain reported a complete response. The median stable dose of methadone was 15 mg per day. CONCLUSION: Methadone at relatively low doses seems to be useful in the treatment of neuropathic pain.
This article was published in Pain Res Manag and referenced in Journal of Pain & Relief

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