Milk supply is the number one reason mothers quit breastfeeding early or supplement with infant formula. The first line of defense for maintaining or increasing supply is establishing breastfeeding early and frequently breastfeeding or pumping. For many mothers, this is easier said than done. Get tips on what you can do to establish breastfeeding in the first few days and weeks and how to gauge your supply accurately. Learn the evidence on galactagogues and lactogenic pharmaceuticals, foods, and herbs to increase milk supply. Plus, information on oversupply and substances that can decrease the amount of milk you make.