Tridax procumbens Linn belongs to the family asteraceae. The extracts of Tridax procumbens have been used as indigenous medicine for a variety of ailments. It has been extensively used in Indian traditional medicine for wound healing, as anticoagulant, antifungal and insect repellent, in diarrhea and dysentery. Leaf extracts are used to treat infectious skin diseases in folk medicines. It is also dispensed as ‘Bhringraj’ which is well known ayurvedic medicine for liver disorders. Antioxidant, antimicrobial, anti-inflammatory and immune modulatory properties have also been demonstrated. Plants have strong ability to synthesize aromatic substances, most of which are phenols or their oxygen substituted derivatives which are mostly secondary metabolites. At least 12,000 have been isolated, a number estimated to be less than 10% of the total. These substances serve as plant defense mechanisms against predation by microbes, insects, herbivores. Some terpenoids are plant pigment, some are plant flavoring agents and some are having medicinal properties.