Pet Health and Wellness The Lasix Debate: New Treadmill Data Challenges Assumptions About Performance Enhancement September 14, 2026 Azzam Bilal Chamdy For decades, the use of furosemide—commonly known by its brand name, Lasix—has been the most contentious issue in North American Thoroughbred racing. Initially introduced to mitigate exercise-induced pulmonary hemorrhage (EIPH),…