Furosemide, sold under the brand name Lasix among others, is a medication used to treat fluid build-up due to heart failure, liver scarring, or kidney disease. It may also be used for the treatment of high blood pressure. It is on the World Health Organization's List of Essential Medicines, which lists the most effective and safe medicines needed in a health system. The wholesale price in the developing world is between US$0.004 and US$0.02 per day. In the United States, it is available as a generic medication and costs about US$0.15 per day. It is on the World Anti-Doping Agency's banned drug list due to concerns that it may mask other drugs. It has also been used in race horses for the treatment and prevention of exercise-induced pulmonary hemorrhage.