400 iu daily is maintenance dose. If deficiency is severe then higher dose is needed. Calcirol sachet can also be given.60000 iu weekly at least 4 wk.

THis dose of vitmain D is given is there is deficiency of vitamin D and signs suggestive of Rickets. If you want to be 100% sure, better to get blood test (calcium, phosporus, ALP) and vitamin D level) done along with wrist X ray. this much high dose can be given safely.. you can follow your doctor advice, he must have seen signs of rickets on examination. you can also like and follow my facebook page for updates regarding general health issues of children. https://www.facebook.com/mayaclinic.in Website: http://mayaclinic.in/wpsite/ (copy paste the link in browser to read on)