Abstract
A dermal patch containing a high (8%) capsaicin concentration (hereafter referred to as the capsaicin 8% dermal patch) [Qutenza®] is a useful option for the treatment of peripheral neuropathic pain (PNP). The patch, referred to as Qutenza 179 mg cutaneous patch in the EU summary of product characteristics, is indicated in the EU for the treatment of PNP in adults, either alone or in combination with other medicinal products for pain. Prolonged exposure to capsaicin (the main pungent component in hot chilli peppers) appears to engender analgesia/pain relief by inducing cutaneous nociceptor ‘defunctionalisation’ [i.e. a cascade of events, including a reduction in TRPV1 (transient receptor potential vanilloid-1) receptor sensitivity to various painful or noxious stimuli, resulting in impaired local nociceptor function for an extended period]. Across clinical and real-world studies in patients with painful diabetic peripheral neuropathy (PDPN) or non-diabetic PNP, including post-herpetic neuralgia (PHN) and HIV-associated neuropathy, single applications of the capsaicin 8% dermal patch generally relieved pain and improved health-related quality of life, patient status and/or treatment satisfaction. Pain relief was at least sustained following repeated applications for ≤ 52 weeks. As the capsaicin 8% dermal patch is associated with minimal systemic absorption, its use is expected to result in few systemic adverse events or drug–drug interactions.
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Acknowledgements
The article was updated from Drugs 2018;78(14):1489–1500 [9], and was reviewed by: A.R.T.S. Araújo, Department of Pharmacy, School of Health Sciences, Polytechnic Institute of Guarda, Guarda, Portugal; F. Araujo, Department of Pharmacy, Virgen del Rocio Hospital, Seville, Spain; G. Hans, Multidisciplinary Pain Center, Antwerp University Hospital, Edegem, Belgium; F. Rustemi, Department of Pharmacy, Albanian University, Tirane, Albania. During the peer review process, Grünenthal, the marketing-authorization holder of the capsaicin 8% dermal patch, was also offered an opportunity to provide a scientific accuracy review of their data. Changes resulting from comments received were made on the basis of scientific and editorial merit.
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Sheridan M. Hoy is an employee of Adis International Ltd./Springer Nature, is responsible for the article content and declares no conflicts of interest.
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Additional information for this Adis Drug Q&A can be found at https://doi.org/10.6084/m9.figshare.11099882.
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Hoy, S.M. Capsaicin 8% dermal patch in peripheral neuropathic pain: a profile of its use. Drugs Ther Perspect 36, 47–56 (2020). https://doi.org/10.1007/s40267-019-00701-0
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DOI: https://doi.org/10.1007/s40267-019-00701-0