Disclosed is a composition comprising scirpusin A and scirpusin B and anti-obesity potential thereof. Also disclosed are methods of inhibiting adipogenesis using a composition comprising scirpusin A and scirpusin B. The present invention also disclosed methods of therapeutically managing obesity in mammals using a composition comprising scirpusin A and scirpusin B. Still further, the present invention also relates to a method of obtaining compositions comprising A. scirpusin A and scirpusin B and B. piceatannol and its dimers scirpusin A and scirpusin B through bioactivity guided fractionation of the rhizomes of
