Study Connects Thyro-L Supplement to Cardiac Arrhythmia

A study done on six Standardbred racehorses associated the use of supplemental thyroxine with cardiac arrhythmia and concluded the supplement also could be a contributing factor to bone fractures.

The results of this study appear in the May 2022 issue of the Equine Veterinary Journal. Janice Kritchevsky, Carla Olave, Stacy Tinkler, Melissa Tropf, Kathleen Ivester, and Laurent Couetil with the Department of Veterinary Clinical Sciences at Purdue University and Lauren Forsythe at the Davis School of Veterinary Medicine at the University of California-Davis conducted the study with funding from the Equine Guelph Centre in Ontario. They initially released the results

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