Many plants possess antioxidant ingredients that provided efficacy by additive or synergistic activities. Present article highlights an antioxidant activity of a red listed medicinal plant Aphanamixis polystachya bark which has a strong astringent power. It is used for the treatment of rheumatism, tumours, liver and spleen diseases. Antioxidant activity of the crude extracts of A. polystachya (bark) were assessed using DPPH and FRAP assays. The alcohol, aqueous methanol and petroleum ether extracts exhibited potent antioxidant activity compared to known antioxidants. Due to its natural origin and potent free-radical scavenging ability A. Polystachya could be used as a potential preventive action taken to improve free radical-mediated diseases.