1. Oxidant Activity (Free Radicals) Different Type Of Free Radicals Involvement of Free Radicals in Human Diseases2. Antioxidant Defense Against Free Radicals - Antioxidants List of Plants uses as an Antioxidant: Amla,Bach, Rasna, Gokhru, Methi, Garlic,Tulsi, Giloya, Jamun, Karala, Neem, Satawari, Sitaphal, Turmeric, Mulethi, Kalmegh, Black pipper, Lemon, Orange, Ashawagandha, Carrot, Spinach, Maidenhair tree, Ginseng, Babchi3. In-Vitro Methods Of Antioxidant Activity 4. In-Vitro Methods of Antioxidant Activity 5. References