Colomycin is not known to harm the unborn child but, like all medicines, it will only be given to a pregnant woman if it is really needed. If the patient is pregnant, thinks she may be pregnant or is planning to have a baby ask the doctor for advice before taking this medicine.
If the patient is breast-feeding, small amounts of Colomycin enter the milk. If the patient cannot stop breast-feeding while she takes Colomycin, she should watch the baby carefully for any signs of illness and tell the doctor if she notices anything wrong.