Canrenone, also known as eplerenone, is a medication used to treat several health conditions, including heart failure and hypertension. It is a synthetic steroid and an aldosterone antagonist that reduces the levels of aldosterone in the body. This medication is part of a group of drugs called potassium-sparing diuretics. Canrenone works by decreasing the amount of water and sodium retained by the body, which helps to regulate blood pressure. Some common synonyms for canrenone include spironolactone, potassium canrenoate, and 7α-(acetylsulfanyl)-3α,5β-tetrahydro-3-hydroxy-7-isopropylspiro[4,5]decan-1-one. These alternative names are often used interchangeably in scientific literature and medical settings.