Barringtonia acutangula or indian oak is a type of tree that are found in many swamps and river banks in Sumatera Selatan region. Determination of total phenolic content, total flavonoid content, antioxidant activity and toxicity of indian oak (Barringtonia acutangula) leaves extract was carried out. Extraction process was carried out by using increasing polarity maceration with n-hexane, ethyl…