Iron deficiency anaemia is a major public health problem worldwide, especially in developing countries. Infants and young children of up to 2 years of age and pregnant women are the most vulnerable group. Although iron intervention programmes, such as iron-folate tablets, have been instituted for pregnant women at the national level in many countries, a suitable effective strategy for infants and young children is still lacking. Recently, researchers at the Hospital for Sick Children and the University of Toronto in Canada developed “Sprinkles”, an innovative iron ‘home-fortification’ strategy. Sprinkles consist of lipid microencapsulated ferrous fumarate in powder form that is packed into single serve sachets which are to be sprinkled onto any kind of weaning food and mixed just before feeding. The efficacy and effectiveness of Sprinkles in improving anaemia status of young children were tested in several countries including Canada, Ghana, China and Mongolia. The results of these studies were encouraging. In view of the high prevalence of anaemia among infants (>80%) and 12-24 months old children (>60%) in Bangladesh as revealed by recent surveys, it was necessary to conduct a similar study in this country. The present study is a community-based single blinded Randomized Controlled Trial (RCT) conducted in rural Bangladesh to compare the efficacy of a daily vs. weekly intervention of Sprinkles in improving the anaemia status of young children aged 12-24 months.