 Intestinal parasitic infections, malnutrition and iron deficiency anaemia IDA are still considered as public health problems in rural Malaysia especially among Orang Asli children. Despite intermittent control programmes, the prevalence of these problems is still high suggesting the need of other control and interventions measures. This randomized double-blind, placebo-controlled trial was carried out among Orang Asli schoolchildren from Sekolah Kebangsaan Betau in Pos Betau, Pahang 200 km northeast Kuala Lumpur to investigate the effects of vitamin A supplementation on intestinal parasitic reinfections, growth, iron status and educational achievement. 