• A&A practice · Jul 2018

    Case Reports

    Treatment of Postherpetic Neuralgia With Intravenous Administration of Zinc Sulfate: A Case Report.

    • Yao-Tsung Lin, Kuo-Mao Lan, Li-Kai Wang, and Jen-Yin Chen.
    • From the Department of Anesthesiology, Chi Mei Medical Center, Tainan, Taiwan.
    • A A Pract. 2018 Jul 1; 11 (1): 8-10.

    AbstractGabapentinoids (gabapentin and pregabalin) are first-line drugs for postherpetic neuralgia (PHN), but some PHN patients have inadequate therapeutic response. Zinc deficiency has been identified as a risk factor for PHN. Zinc can alleviate pain through binding to Ca(v)3.2 T-channels and N-methyl-D-aspartate receptors. Mechanisms of gabapentinoids on neuropathic pain include inhibiting N-methyl-D-aspartate receptors and calcium channels. The aforementioned findings provide a molecular pain-relieving basis for zinc supplements as an add-on therapy to pregabalin. We report 2 zinc-deficient PHN patients who received zinc sulfate intravenously as an add-on therapy to pregabalin and responded well.

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