In countries with high rates of food insecurity, prophylactic supplements of vitamin A palmitate in oil 200, 000 units (60, 000 retinol activity equivalent [RAE]) orally every 6 months are advised for all children between 1 and 5 years of age; infants < 6 months can be given a one-time dose of 50, 000 units (15, 000 RAE), and those aged 6 to 12 months can be given a one-time dose of 100, 000 units (30, 000 RAE).