Alcohol can be passed through to breast milk. It is safest to not drink, however if you are organised you can enjoy a glass of wine or another alcoholic beverage when breastfeeding.
As a guide, alcohol will be in your breast milk 30 to 60 minutes after you start drinking. It takes approximately 2 hours for an average woman to metabolise 1 standard alcoholic drink (10g of alcohol). The Feed Safe app (http://www.feedsafe.net/) can help you work out these times more accurately.
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