You have two options for treating thrush on your nipples while breastfeeding. The first option is to apply Canesten™ after each feeding for the next 10 days. This is the recommended option. The second option is to apply a small amount of the prescribed product for your baby on your nipples, but there is a risk of running out of product for both of you if you choose this option. Either way, make sure to apply the treatment 4 times a day.