Bangladesh has a high prevalence of undernutrition and micronutrient deficiencies among pregnant and lactating women and infants and young children. This study was carried out to assess the acceptability of lipid-based nutrient supplements among pregnant and lactating women and infants and young children, and micronutrient powders among infants and young children. Researchers also sought to understand perceptions about malnutrition and nutrient supplements prior to implementing an effectiveness study.