Breastfeeding can use gentamycin, gentamycin ophthalmic ointment is a topical drug, can not be oral gentamycin tablets or capsules, topical gentamycin ophthalmic ointment or ointment can be used, breastfeeding medication principle is to try to minimize the use or not use. The reason why you can’t use drugs during breastfeeding: firstly, you are afraid of affecting the growth and development of the baby. Secondly, it is afraid to return to the milk. Internal medication will have a greater impact, external medication is not affected, if the use of gentamycin ointment, topical medication will not lead to breast milk and will not affect the growth and development of the baby. The use of drugs for breastfeeding women should be more cautious, can be used to improve the diet to ease the symptoms as much as possible to improve the diet of the main, it is best to check the instructions before using the drug, in accordance with the instructions for use.