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Calcirol sachets have very high vitamin D3
It should be used only when there is proved vitamin D deficiency (or low levels in blood)
Most of the infant foods and milk formula are fortified with daily requirements needed for the baby.
Moreover high vit D in the body also can cause problems.
It has to be just right!!!
So do not give it to baby without advice from your doctors and examination of the baby.
All the best