The Furosemide reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Furosemide

Furosemide is a drug used as a diuretic in human patients, and is also used to prevent thoroughbred race horses from bleeding through the nose during races. It is most commonly marketed under the brand name Lasix.

Apparently, sometime in the early 1970s, furosemide's ability to prevent or at least greatly reduce the incidence of bleeding by horses during races was discovered accidentally. Clinical trials followed, and by decade's end, racing commissions in some states began legalizing its use on race horses. On September 1, 1995, New York became the last state in the United States to approve such use, after years of refusing to consider doing so. Its use for this purpose is still prohibited in many other countries, however.

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