Jon Faldasz: Ondansetron May Have Cardiotoxicity Risk Among 5-HT3RAs Due to High Concentration in Cardiac Tissues
Jon Faldasz, Senior Director of Product and Customer Experience at InsightRX, posted on LinkedIn:
”Just dropped: Ondansetron may have outstanding cardiotoxicity risk among 5-HT3RAs due to high concentration in cardiac tissues
Published today in Nature Scientific Reports, Cai et al used the FDA’s Adverse Event Reporting System (FAERS) to review records of cardiotoxicity associated with 5-HT3RA use. They found:
– The different 5-HT3RAs exhibit varying degrees and types of cardiotoxicity
– QT prolongation was most common for ondansetron (granisetron was least common)
– In a subsequent PBPK model extrapolation they estimated that ondansetron concentrations in cardiac tissue were 2.3x higher than plasma.
They suggested that providers might “prioritize low cardiac toxicity 5-HT3RAs” (read: avoid ondansetron) in patients with heart disease.
For my part, FAERS seems like an untapped resource for this type of work, now I’m thinking on what other investigations could make use of it.
Article reference here.”
Title: Cardiotoxicity of different 5-HT3 receptor antagonists analyzed using the FAERS database and pharmacokinetic study
Authors: Yijun Cai, Shaohong Luo, Shen Lin, Xiaoting Huang, Xiangzhen Wang, Lijing Yang, Xiongwei Xu, Xiuhua Weng
Stay updated with Hemostasis Today.
-
Jan 9, 2026, 09:25Emma Groarke Shares A Comprehensive Review on VEXAS Syndrome
-
Jan 9, 2026, 09:13Anirban Sen Gupta Presents PlateChek
-
Jan 9, 2026, 08:58Oscar Pena Shares KDIGO 2026 Update: 5 Critical Changes for Anemia in CKD Management
-
Jan 9, 2026, 07:38Bartosz Hudzik on Subacute Coronary Occlusions: Navigating the Gray Zone in CAD Care
-
Jan 9, 2026, 07:27Gregory Piazza on The Role of D-Dimer in VTE Evaluation
-
Jan 9, 2026, 07:19Emmanuel J Favaloro Shares the 1st Article in a VWD Series Marking the 100-Year Anniversary
-
Jan 9, 2026, 07:07Taylor Robichaux on Recombinant ADAMTS13 Therapy in cTTP
-
Jan 9, 2026, 06:25Sara Ng: VTE Continues to Plague Modern Oncology
-
Jan 9, 2026, 06:12James Caldwell on The Hidden Culprit in Perimesencephalic SAH