Parents sometimes find varying shades of green in their baby’s nappy. Breast-fed babies can produce bright, frothy green poo, usually because they are getting too much foremilk or because mum is swapping from breast to breast during feeds. Try feeding from just one breast at a time until the breast is drained to make sure your baby is also getting the rich hindmilk. If your formula-fed baby’s poo is green, it could just mean they are getting a lot of iron in their feed. Check the formula to see if it contains an iron supplement and speak to your child health nurse or doctor about possibly adjusting which formula you use.