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Racehorse receiving Lasix injection from veterinarian

Lasix in Horse Racing: Science, Economics, and the 2026 HISA Turning Point

Lasix — the brand name for furosemide — is the most debated drug in American horse racing. It has been administered to racehorses before competition for decades, used primarily to control Exercise-Induced Pulmonary Hemorrhage (EIPH): the lung bleeding that affects an estimated 90% of Thoroughbreds under race conditions. It reduces that bleeding by 50–70%. It …

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A veterinarian examines a horse’s leg to diagnose lameness.

Why Racehorses Break Down—and the Hidden Warning Signs Before It Happens

Racehorses break down for several reasons. Here are the most common ones: Usually not sudden: Catastrophic injuries are often the final stage of stress injuries that built up over weeks or months before race day. Main drivers: Pre-existing stress injuries, insufficient recovery time, hard or inconsistent track surfaces, and conformational vulnerabilities that concentrate force on …

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A horse eating clean, high-quality hay from a feeder.

Feed Mistakes Cost Races: An Owner’s Real-World Guide to Racehorse Nutrition

The night before a big race, my Thoroughbred Ashton refused his feed. Watching a horse turn away from a meal he normally cleaned up reminded me of something every trainer eventually learns: racehorse nutrition isn’t just about formulas—it’s about understanding the individual horse. After more than 30 years managing Thoroughbreds, I’ve found that feeding mistakes …

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Thoroughbred horse walking in the paddock before a maiden claiming race.

Understanding Maiden Claiming Races: A Beginner’s Guide

Did you know some of horse racing’s greatest champions started in maiden claiming races? These events are more than stepping stones—they’re brimming with opportunity, strategy, and excitement. For new owners, they offer an accessible way to enter the sport, while seasoned professionals use them to uncover hidden talent and strengthen their stables. As a racehorse …

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breeders using genetic technologies to improve Thoroughbred breeding practices.

I Paid a Premium for a ‘Perfect’ Pedigree. He Never Won a Race.

Whether you’re planning a mating or shopping a yearling, the search for speed starts with the same question: what can genetics actually tell you about a racehorse’s potential — and what remains impossible to predict? Pedigree, heart size, muscle fiber type, conformation, and the mare family all shape a horse’s speed potential, but none of …

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