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Eperisone-Induced Anaphylaxis: Pharmacovigilance Data and Results of Allergy Testing

 Kyung Hee Park  ;  Sang Chul Lee  ;  Ji Eun Yuk  ;  Sung-Ryeol Kim  ;  Jae-Hyun Lee  ;  Jung-Won Park 
 ALLERGY ASTHMA & IMMUNOLOGY RESEARCH, Vol.11(2) : 231-240, 2019 
Journal Title
Issue Date
Adverse drug reaction ; anaphylaxis ; eperisone ; hypersensitivity ; non-steroidal anti-inflammatory agents
PURPOSE: Eperisone is an oral muscle relaxant used in musculoskeletal disorders causing muscle spasm and pain. For more effective pain control, eperisone is usually prescribed together with nonsteroidal anti-inflammatory drugs (NSAIDs). As such, eperisone may have been overlooked as the cause of anaphylaxis compared with NSAIDs. This study aimed to analyze the adverse drug reaction (ADR) reported in Korea and suggest an appropriate diagnostic approach for eperisone-induced anaphylaxis.

METHODS: We reviewed eperisone-related pharmacovigilance data (Korea Institute of Drug Safety-Korea Adverse Event Reporting System [KIDS-KAERS]) reported in Korea from 2010 to 2015. ADRs with causal relationship were selected. Clinical manifestations, severity, outcomes, and re-exposure information were analyzed. For further investigation, 7-year ADR data reported in a single center were also reviewed. Oral provocation test (OPT), skin prick test (SPT) and basophil activation test (BAT) were performed in this center.

RESULTS: During the study period, 207 patients had adverse reactions to eperisone. The most common ADRs were cutaneous hypersensitive reactions (30.4%) such as urticaria, itchiness or angioedema. Fifth common reported ADR was anaphylaxis. There were 35 patients with anaphylaxis, comprising 16.9% of the eperisone-related ADRs. In the single center study, there were 11 patients with eperisone-induced anaphylaxis. All the patients underwent OPT and all the provoked patients showed a positive reaction. Four of the 11 patients with anaphylaxis also underwent SPT and BAT, which were all negative.

CONCLUSIONS: Incidence of eperisone-induced anaphylaxis calculated from the KIDS-KAERS database was 0.001%. Eperisone can cause hypersensitive reactions, including anaphylaxis, possibly by inducing non-immunoglobulin E-mediated immediate hypersensitivity.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Ryeol(김성렬) ORCID logo https://orcid.org/0000-0001-7418-0049
Park, Kyung Hee(박경희) ORCID logo https://orcid.org/0000-0003-3605-5364
Park, Jung Won(박중원) ORCID logo https://orcid.org/0000-0003-0249-8749
Lee, Sang Chul(이상철)
Lee, Jae Hyun(이재현) ORCID logo https://orcid.org/0000-0002-0760-0071
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