plant kingdom has been described as a reservoir of many novel biologically active molecules of medicinal value. [2] Recently there has been a surge of interest in the therapeutic potential of medicinal plants as antioxidants in reducing free radical-induced tissue injury. Alstonia scholaris belongs to the family apocyanaceae which consists of about 250 genera and 2000 species of tropical trees, shrubs and vines. [3] Almost all parts of this plant are used in medicine and the bark has antihelminthic and astringent properties. It has been used in treating chronic diarrhea, dysentery and abnormal bowel movements. [4] The objective of the present study was to screen the phytochemicals and assess the antioxidant activity of the solvent extracts of bark and leaf of Alstonia scholaris. Free radical scavenging ability of the extracts were tested using antioxidant assays, viz., DPPH assay, ABTS assay and FRAP assay. MATERIALS AND METHODS The bark and leaves of Alstonia scholaris were collected from VIT University campus, Vellore and authenticated by Plant Biotechnology division, VIT University, Vellore. The samples were washed thoroughly and dried. The dried samples were pulverized and 100g of the powered samples were refluxed with ethyl acetate, butanol and water in the ratio 1:10(w/v). The extracts were then concentrated using rotary flash