Adverse tumor events induced by ranitidine: an analysis based on the FAERS database.

Background: Ranitidine induced tumor adverse events remains a contradictory clinical question, due to the limited evidence of tumor risk associated with ranitidine in the real world. The purpose of this study was to evaluate the association of ranitidine with all types of tumors through the FAERS database and to provide a reference for clinical use.

Research design and methods: Cancer cases associated with ranitidine in the FAERS database from the first quarter of 2004 to the fourth quarter of 2023 were extracted to analyze demographic characteristics, and a disproportion analysis was performed.

Result: A total of 662,998 ranitidine-related cancer cases were screened, and the 50-59 and 60-69 groups accounted for the largest proportion. In PT signal detection, ranitidine was associated with 98 PT, including penal cancer stage II, gastric cancer stage II, et al. In terms of outcome events, adverse events were higher in men (20.65%) than in women (18.47%).

Conclusions: Ranitidine may induce various tumor-related adverse reactions, especially in long-term users and elderly patients. For these patients, tumor screening should be strengthened, and long-term use of ranitidine should be avoided. Since this study cannot prove causality, further evidence is needed for prospective studies with a larger sample size.