Prolactin is considered a key hormone for lactation, yet our knowledge has been surprisingly sparse. It’s necessary for pubertal and pregnancy mammary development as well as milk synthesis. While prolactin levels don’t correlate directly to milk production, lactation fails without it. This talk will take a closer look at current research and what we do and do not yet understand about prolactin, especially in the face of undetermined milk supply problems. We will then examine specific cases and discuss the process of elimination, as well as possible strategies for affected clients.