8week old baby has green poo...

[newstart2010]

My friends baby is only 8weeks old and has got green poo (like a face mask, dark green). Sometimes it is light green then goes to the darker green.

Got any ideas? baby is not vomiting, he is formula fed and has not changed the formula type.

What formula is it? Some DO make the poo a greeny colour.

Is he quite windy? I think wind can also contribute to a greeny colour poo.

Don't know what it is but we get dark green poo once in a while, like spinach. (breastfed baby) HV wasn't worried. I think it's just part of the normal range of baby poo.