Jengkol (Archidendron jiringa) is one of the medicinal plants that can be used as traditional medicine. The ethanol extract content of jengkol leaves is reported to have many pharmacological activities such as anti-inflammatory, anti-hyperuricemia, anti-hyperlipidemia and immunostimulant. However, the level of safety of using this plant is not yet known. This study aims to determine the nature …