If you have nipple trush, you can be pretty sure that bub will have an imbalance in their gut too, so treating your gut first. Inner health plus (or similar) is good, homemade yogurt is best - yogurt because it makes it through into the lower intestine, homemade because it is higher in the good bacteria and lower in sugar. Sugar is counter-productive to trush treatment as it feeds it. You could even put some of the yogurt on your nipples if you want. Also, a little bit of sun on them (being careful not to get burned of course) will do wonders.