This information was shared on Lactnet in the past.  I did not originate it,
but share my interpretation of it:

Breast milk alcohol levels and blood alcohol levels are the same.  If a
person is legally drunk at 0.1% blood alcohol level, that is how much
alcohol is in her milk.

If you take one ounce (30 cc.) of breast milk and divide it into 100 parts,
then take one of the 100 parts and divide it into 10 parts, one of those 10
parts would be alcohol in a legally drunk person.  How much less would
appear in someone who had one glass of wine?

As the alcohol is broken down and eliminated from her blood, it is reduced
from her milk at the same time.  Once it is out of her blood, it is out of
her milk.  There is no need to pump and dump.

A baby of a legally drunk women is in much more danger of being dropped,
than of harm from the alcohol in her milk IMHO.

Barb Berges BS, RN, IBCLC
Rochester, New York

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