 The aim of this study is to compare the efficacy and nutritional impact of two drug treatments against intestinal helminths from a rural area of Guatemala. The helminths that will be analyzed in this study are Ascaris lumbricoides, Trichuris trichiura, and hookworm. Because of the manifestations of these helminths infections, nutritional status can deteriorate in infected persons. According to the World Bank, these helminths are one of the top causes of childhood morbidity in many areas of the developing world The World Bank, 1993. 