Tawfik, K., Barazi, M.A.-, Bashir, M., Marzouq, W.A.-, AlSoufi, R. and Kharsa, H. 2015. A COMPARATIVE STUDY OF ANTIOXIDANT ACTIVITIES OF ZIZIPHUS AND COLOCYNTH FROM SAUDI ARABIA DESERTS AND PROPOSED PHARMACEUTICAL PRODUCTS . International Research Journal of Pharmaceutical and Applied Sciences. 5, 5 (Oct. 2015), 1-6.