Hi doctor, my baby's poop/potty is always in green color. Is this because of vit D 3? Is it normal? Baby is on less breastfeed and more on formula milk. Please suggest something on it

A. Babies who are formula fed, have the tendency to pass green, dark or grey colored poop. This is due to the iron content present in formula and it is completely normal as long as baby poops regularly and with ease. There is no need to be concerned.