Korean J Clin Pharm.  2022 Sep;32(3):204-214. 10.24304/kjcp.2022.32.3.204.

Real-world Adverse Events Associated with Fluconazole and Itraconazole: Analysis of Nationwide Data Using a Spontaneous Reporting System Database

Affiliations
  • 1College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gyeongnam 50834, Republic of Korea
  • 2The Korean Pharmaceutical Association for Patient and Drug Safety Regional Pharmacovigilance Center, Seoul 06708, Republic of Korea

Abstract


Objective
This study aimed to investigate the occurrence and types of the adverse events (AEs) associated with oral fluconazole and itraconazole and factors associated with specific types of AEs.
Methods
We analyzed AEs reported by community pharmacies nationwide over 10 years using the Korea Adverse Event Reporting System database. Various AE terms were categorized into 18 types, and concomitant medications were classified by drug-drug interaction (DDI) severity. The relationship between the specific type of AE and age, sex, and number of concomitant medications was investigated using multiple logistic regression analysis.
Results
A total of 879 AE reports of fluconazole and 401 reports of itraconazole were analyzed; of these reports, 321 and 83 reports of fluconazole and itraconazole, respectively, described concomitant drug administration categorized as DDI severity of contraindicated or major. Women had a higher risk of psychiatric AEs associated with fluconazole use (OR, 1.587; p=0.042). Polypharmacy increased the risk for psychiatric AEs (OR, 3.598; p<0.001 for fluconazole and OR, 2.308; p=0.046 for itraconazole). In dermatologic AEs, the mean age of patients who received itraconazole was lower than that of patients who received fluconazole (46.3±16.8 vs. 54.9±15.4; p<0.001). Co-administration of fluconazole with 1-3 drugs increased the risk of neurological AEs (OR, 1.764; p=0.028).
Conclusion
When using fluconazole and itraconazole, psychiatric AEs should be noted, particularly in women and in case of polypharmacy; moreover, when fluconazole is co-administered with other drugs, attention should be paid to the occurrence of neurological AEs.

Keyword

Adverse events; drug-drug interaction; fluconazole; itraconazole
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