levothyroxine

Study Shows Thyroxine Harmful To Racing Performance, Equine Health

A study completed by Dr. Janice E. Kritchevsky at Purdue University College of Veterinary Medicine shows that the use of thyroxine as a supplement in racehorses can be detrimental to performance and cause cardiac arrhythmias. Kritchevsky noted that thyroid issues in horses are rare; bloodwork that shows thyroid hormone concentrations above the norm don’t necessarily […]

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