Diuretic given to horses to prevent exercise-induced pulmonary hemorrhage (EIPH), which is bleeding from the lungs during intense exericse. Lasix, or furosemide, is indicated by an L in the racing program. Frankie Lovato Jr. and Dr. Erika Wierman explain how and why Lasix is used in racehorses in the accompanying video. Lovato also discusses the term bleeder with Dr. Wierman and research examining the effects of Lasix on horses. Video courtesy of Jockey World, a non-profit educational organization in horse racing created by Lovato and dedicated to providing reliable information, tools, guidance and resources, that include knowledge in health and safety, to anyone who wishes to pursue a career or develop a better understanding of the horse racing industry. Lovato in 2013 vowed to create 365 racing terminology videos for every day of the year in an effort to better educate racing fans and bring awareness to Jockey World.