I have used Demal 200 for the last 2 years as prophilaxy and I have been very happy: despite my long stays in malaria-endemic countries in fact, up to now, no attacks..and hope it continues! I also used it to clear my body of possible strains of malaria experienced 7 years before and again can only say I am very happy about it. I cannot guarantee it works 100% but for me up to now it has and above all, considering the long periods I spend in endemic areas, it is much gentler with my body than allopatic treatments… I cannot deny though that in my bag I also carry a “traditional” medicine in case of a bad attack, just for extra safety. Thanks Blue Turtle!