The antioxidant activity of two plants - Hadjod i.e. Cissus quadrangularis (CQ) and Hingot i.e. Balanites aegyptiaca (BA) was determined by the thiocyanate method. The antioxidant activity of both the plants increased with increasing amount of extract (200µg-1000µg) added to the linoleic emulsion. The ethanolic extract of CQ was more effective than the other. Like antioxidant activity, the reducing power was also dependent upon the concentration. The ethanolic extract of BA shows more reducing power than the other. The result obtained in the present study indicates that the both the plants are potential source of natural antioxidants. In addition, we could suggest that although the reducing power of a substance may be an indicator of its po-tential antioxidant activity, there is not necessarily a linear correlation between these two activities.