This study aims to determine the effect of ethanol concentration on the levels of polyphenols, flavonoids and tannins as well as the antioxidant activity of nipah (Nypa fruticans) husk extract produced. This study was conducted experimentally in the laboratory with ethanol concentration treatment consisting of 4 levels (concentrations of 50%, 60%, 70% and 80%) and repeated 3 times. The paramete…