Furosemide

Furosemide (INN) or frusemide (former BAN) is a loop diuretic used in the treatment of congestive heart failure and edema. It is most commonly marketed by Sanofi-Aventis under the brand name Lasix, and also under the brand name Frumex. It has also been used to prevent Thoroughbred and Standardbred race horses from bleeding through the nose during races.