Malnutrition constitutes a public health problem throughout the world and particularly in developing countries. The objective of the study is to assess the impact of an elementary integrator composed of Spiruline (Spirulina platensis) and Misola (millet, soja, peanut) produced at the Centre Medical St Camille (CMSC) of Ouagadougou, Burkina Faso, on the nutritional status of undernourished children. 550 undernourished children of less than 5 years old were enrolled in this study, 455 showed severe marasma, 57 marasma of medium severity and 38 kwashiorkor plus marasma. We divided the children randomly into four groups: 170 were given Misola (731±7 kcal/day), 170 were given Spiruline plus traditional meals (748±6 kcal/day), 170 were given Spiruline plus Misola (767±5 kcal/day). Forty children received only traditional meals (722±8 kcal/day) and functioned as the control …