@PinochetsCommieCopter it is legit breast milk, the drug that he/she uses is domoeridone aka motilium, you can only get it with prescription in the states or buy in bulk at:
https://www.inhousepharmacy.vu/p-17-motilium.aspx
Drug is very safe and many breastfeeding women use it to induce lactation when they adopt a newborn baby or to increase milk supply.