While it is true that a component in beer increases prolactin levels, there is not enough research to support recommending that the mother drink in order to increase milk production. Maternal alcohol consumption should generally be discouraged during lactation/breastfeeding. A small but potentially significant amount of alcohol transfers into breast milk. Evidence suggests that regular or heavy drinking may be harmful to the breastfeeding infant. A small amount of alcohol consumption may be safe. Experts suggest 0.5g of alcohol per kg body weight. Breastfeeding should take place two hours before or after alcohol consumption.