A practice that has become quite popular in some
Brazilian regions is the use of tea bags for the treatment
of sore nipple. This practice is not supported in the
literature, since there are at least two studies that show
that the use of tea bags is as effective as the use of warm
moist compresses.These compresses, because of
vasodilation, may bring some relief to mothers with sore
nipples. Tannic acid found in tea may actually cause
damage to the nipples.