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  • Title: [Long-term efficacy and safety of pregabalin in patients with postherpetic neuralgia: results of a 52-week, open-label, flexible-dose study].
    Author: Ogawa S, Suzuki M, Arakawa A, Yoshiyama T, Suzuki M.
    Journal: Masui; 2010 Aug; 59(8):961-70. PubMed ID: 20715519.
    Abstract:
    BACKGROUND: The efficacy of pregabalin was demonstrated in a randomized double-blind placebo-controlled 13-week trial in 371 Japanese patients with postherpetic neuralgia (PHN). In this study, we evaluated the long-term efficacy and safety of pregabalin for relief of PHN. METHODS: 126 patients were enrolled from the preceding double-blind study into the 52-week open-label study. Patients were given pregabalin 150 to 600 mg x day(-1). Pain intensity was measured using the Short-Form McGill Pain Questionnaire (SF-MPQ: total score, visual analogue scale and present pain intensity). RESULTS: The efficacy parameter SF-MPQ showed a decrease over the treatment-term. The changes of visual analogue scale and present pain intensity at the endpoint were -28.3 mm and -1.1 score, respectively. The commonly reported adverse events were dizziness, somnolence, peripheral edema and weight gain, and most of them were mild to moderate in intensity. No new adverse events were observed due to long-term pregabalin administration. CONCLUSIONS: These results suggest that long-term treatment of pregabalin may be beneficial in patients with PHN.
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