. marmelos, A. indica, T. ammi and H. antidysenterica; chloroform extract of A. catechu, A. indica and T. ammi; and methanol extract of A. catechu, A. nilotica, A. marmelos and T. ammi (MIC, d" 50 ì g/ml) followed by petroleum ether extract of O. basilicum and chloroform extract of A. nilotica, A. marmelos and H. antidysenterica (MIC, 50-100 ì g/ml). These preliminary results will be helpful in rationalizing the use of plants based traditional medicines in modern systems of health care.