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Retrospective analysis of 41,775 reports identifies signals for cognitive disorders with 50 medications including finasteride and diltiazemAnalysis of 50 drugs shows statistical links to cognitive issues in vulnerable groups

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Key Takeaway
Note statistical associations for cognitive disorders with 50 drugs; 74% lacked warnings; results indicate associations, not causality.

This retrospective disproportionality analysis evaluated 41,775 reports from the FDA Adverse Event Reporting System (2004–2024), Japanese Adverse Drug Event Report (JADER), and World Health Organization (WHO) VigiAccess databases. The investigation focused on 50 medications, including finasteride, diltiazem, carbidopa/levodopa, antiepileptics, and other neurologic agents, within vulnerable populations such as children and seniors.

The primary outcome assessed signals for drug-related cognitive disorders. Significant signals were identified for these disorders across the 50 medications analyzed. Cross-database validation demonstrated consistent signals for 92% of the primary drug-event pairs. Additionally, 74% of the 50 medications lacked existing FDA label warnings regarding cognitive disorders.

Safety analysis highlighted cognitive disorders as the adverse events of interest. The study design relies on spontaneous reporting systems, meaning absolute numbers of discontinuations or serious adverse events were not reported. Limitations include the inherent nature of statistical associations rather than causal links.

Practice relevance suggests a need for further research, potential label updates, and increased clinical awareness, particularly in high-risk groups. Clinicians should interpret these findings as statistical associations and not causal links, noting that results indicate statistical associations, not causal links.

This study examined data from the FDA, Japanese, and WHO databases covering reports from 2004 to 2024. Researchers looked at 50 different medications, including finasteride and diltiazem, to see if they were linked to cognitive disorders in vulnerable populations like children and seniors. They found significant signals for these issues across the board. Importantly, 74% of these 50 medications did not currently have warnings on their FDA labels regarding cognitive disorders. The findings were consistent across all three different international databases for 92% of the drug-event pairs checked.

The study focused on statistical associations found in adverse event reports, not on proving that these drugs cause these problems directly. Factors like early reporting patterns or random failures were also considered when looking at the data. The main reason to be careful is that many patients in high-risk groups might not have current warnings for these potential side effects. This gap between the data and existing labels suggests a need for further research and possible updates to drug information.

Readers should understand that this study shows a link based on reporting patterns, not a confirmed cause-and-effect relationship. The results indicate a need for increased clinical awareness, especially when treating children and older adults. Further research is required before any definitive conclusions about safety can be drawn. Patients should talk to their healthcare providers about any concerns regarding their medications.

What this means for you:
Study shows statistical links between 50 drugs and cognitive issues in vulnerable groups, but more research is needed.

Study Details

Study typeCohort
EvidenceLevel 3
PublishedApr 2026
View Original Abstract ↓
ObjectiveThe clinical risk of cognitive disorders linked to various drugs is not well-defined. This study aimed to identify medications with notable signals for drug-related cognitive disorders and evaluate whether their US Food and Drug Administration (FDA)-approved labels include relevant safety warnings.MethodsA retrospective disproportionality analysis using FDA Adverse Event Reporting System data (2004–2024) employed four algorithms—Reporting Odds Ratio (ROR), Proportional Reporting Ratio (PRR), Bayesian Confidence Propagation Neural Network (BCPNN) and Multi-Item Gamma Poisson Shrinker (MGPS)—for signal detection. To confirm the results, a cross-database consistency check was performed with the Japanese Adverse Drug Event Report (JADER) and World Health Organization (WHO) VigiAccess databases.ResultsAn analysis of 41,775 reports on drug-related cognitive disorders found significant signals for 50 medications using four algorithms. Notably, 74% of these drugs, including finasteride, diltiazem, and carbidopa/levodopa, lacked cognitive disorder warnings in FDA labels. Reporting patterns were classified into early or random failure types. Subgroup analyses showed certain drugs were disproportionately reported in vulnerable groups, such as antiepileptics in children and neurologic agents in seniors. The U.S. had the most reports. Multivariate analysis identified 43 factors linked to higher reporting odds, including conditions like depression and the use of specific drugs. Cross-database validation confirmed consistent signals for 92% of primary drug-event pairs.ConclusionThis pharmacovigilance analysis uncovers significant, previously unrecognized signals of drug-related cognitive disorders in various medications, most lacking label warnings. These findings highlight the need for further research, potential label updates, and increased clinical awareness, particularly in high-risk groups. Importantly, these results indicate statistical associations, not causal links, between the drugs and cognitive disorders.
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