It was not all that long ago we were telling breast feeding moms to have a glass of beer when they were nursing.
My husband and I remember one of our doctors, either the pediatrician or the ob/gyn, telling me to have a glass of wine before the late afternoon nursing - the "witching hour." It was supposed to help the milk let down and make me (and the baby?) calmer. I had four kids between 1983 and 1994, not that long ago.