Gulfstream Park, in Hallandale Beach, Florida, will begin third-party administration of race-day furosemide on Wednesday, Nov. 19.

The policy regulating furosemide, marketed as Salix and also known as Lasix, was announced Nov. 13. The new regulation will prohibit any private veterinarian from being in a horse's stall on race day.

By 6 a.m. (all times Eastern) of race day, horsemen will hang a red tag outside a horse's stall reading "Horse In Today." This will identify that horse for a pre-race exam and furosemide treatment by a Gulfstream regulatory veterinarian. Horses being treated must be on-site one hour prior to furosemide being administrated or by 11:30 a.m.

"Gulfstream Park has instituted this policy to keep the playing field level, keep private veterinarians out of horse's stalls on the day they race, and also to continue building the integrity of the sport," said Gulfstream president Tim Ritvo. "It's important for the betting public, the economic engine of our sport, to understand no horse can be seen by a private veterinarian on the day of a race and only a Gulfstream regulatory veterinarian can administer medication