It is well documented that flavonoids possess significant antioxidant potential due the presence of phenolic hydroxyl groups . Our results show that the extract of the aerial parts of TS possesses strong antioxidant potential and high quantity of TPC (91.66%, 115.55 mg GAE/g dw) as compared to roots (86.34%, 104.9 mg GAE/g dw) which might be due to the presence of high quantity of total phenolic contents and flavonoids. Moreover phytochemical screening of METS has also shown the presence of flavonoids. Many studies are available which relate analgesic, anti-inflammatory and antioxidant activities with flavonoids by interacting with prostaglandins and superoxides .