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Aims: To investigate interstitial lung disease (ILD) in men with prostate cancer receiving hormone therapy. Methods: We gathered cases diagnosed with prostate cancer based on the United States Food and Drug Administration Adverse Event Reporting System (FAERS) database from 2004 to 2020. We divided the included cases into 3 groups based on the primary suspected drugs: a hormone therapy group, a positive control group (taxanes), and a negative control group. We employed reporting odds ratio, a disproportionality method, to detect the association between ILD events and target drugs. Results: We finally included a total of 85 403 cases, 69 894 cases (628 ILD event cases) in the hormone therapy group, 2302 cases (158 ILD event cases) in the positive control group and 13 207 cases (72 ILD event cases) in the negative control group. There were 394 ILD event cases (62.74%) in the hormone therapy group in Japan; 78.68% of the ILD events occurred within the first year after hormone treatment. Disproportionality analysis indicated that ILD events were significantly associated with nilutamide, flutamide, bicalutamide, goserelin, degarelix and apalutamide; the reporting odds ratios (95% confidence interval) were 32.14 (11.03–93.63), 9.93 (3.62–27.21), 8.19 (6.01–11.16), 3.74 (2.61–5.37), 2.41 (1.55–3.75) and 1.94 (1.01–3.75), respectively. Conclusion: Based on this FAERS pharmacovigilance analysis, the association between ILD events and hormone therapy drugs, including bicalutamide, flutamide, nilutamide, goserelin, degarelix and apalutamide, should not be ignored, especially in the Japanese population. Lung function of prostate cancer patients should be monitored when receiving the hormone therapy drugs mentioned above, especially for the first year post medication. [ABSTRACT FROM AUTHOR]