Regular blood transfusions are typically used to treat the genetic anemia known as thalassemia, which can lead to an increase in the body's total iron levels. The condition of excess iron can be toxic to the body due to the formation of free radicals that are harmful and can damage cells and tissues. So the availability of free iron will form the basis of iron toxicity because it accelerates the Fenton reaction to produce an increase in the amount of ROS that cannot be suppressed so that saturation of the antioxidant system can occur. Excess iron has been known to be a risk factor for organ dysfunction and damage that results in various organ diseases such as liver, heart and kidney, diabetes mellitus, and neurodegenerative diseases. Mangiferin is an active compound has been shown to act as an iron chelating agent by forming complexes with iron. The complex formed can reduce iron accumulation in thalassemia patients who receive blood transfusions on a regular basis. Mahkota Dewa (Phaleria macrocarpa) is a well-known medicinal plant native to Papua, Indonesia, and it also includes the active ingredient mangiferin. This study aims to determine the effectiveness of the ethanolic extract of Phaleria macrocarpa fruit as an iron chelating agent observed in the kidneys in a rat model of excess iron