Aldosterone wani hormone ne da glandar adrenal ke samarwa wanda ke daidaita ma'aunin electrolytes da ruwa a cikin jiki. Babban aikinsa shi ne ƙara sake dawo da ions sodium da kuma fitar da ions na potassium daga kodan, wanda ke taimakawa wajen kiyaye hawan jini da daidaiton ruwa a cikin jiki. Aldosterone kuma yana motsa ruwa a cikin koda, wanda ke taimakawa wajen kiyaye yawan jini da hawan jini.