ICMR has come out with new regulatory guidelines saying that Indian children should have a daily intake of 400 to 1000 IU and 600 to 1000 IU of vitamin D for children less than a year and u to 18 years respectively.But as per Indian experts similar oral dosing of vitamin D concentration has not had the desired effect on the Indian children.In India oral doses of up to 2000 IU per day are barely able to maintain vitamin D sufficiency. A dose of 60,000 IU achieved vitamin D sufficient status in only 47 per cent girls at the end of one year.