Abstract
ABSTRACT Background Angiotensin receptor blockers (ARBs) are widely used for treating hypertension and heart failure. Angioedema has been reported as a controversial adverse effect of ARBs and the evidence on individual ARB risks is limited. This study aimed to assess signals of angioedema with different ARBs using the US FDA Adverse Event Reporting System (AERS) database. Research design and methods Reports of angioedema from 2004 to 2024 in AERS with an ARB as the primary suspect were extracted using Medical Dictionary for Regulatory Activities queries. Disproportionality analyses including reporting odds ratio, proportional reporting ratio, Bayesian confidence propagation neural network and multi-item gamma Poisson shrinker were conducted to identify safety signals for individual ARBs. Results A total of 3,683 unique reports met the selection criteria. Irbesartan and losartan generated signals in all statistical measures, followed by telmisartan and candesartan in some measures. Valsartan had the highest report count. Most reports reported hospitalization, prolonged hospitalization or life-threatening outcomes consequent to angioedema. Conclusion This pharmacovigilance study using AERS highlights potential higher risks of angioedema with losartan and irbesartan compared to other ARBs, warranting validation through prospective epidemiological studies to characterize individual ARB safety profiles.
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