Breast milk production begins during pregnancy and ramps up after delivery, but “getting” breast milk can also mean building a strong supply, obtaining donor milk, or even inducing lactation without a pregnancy. The path depends on your situation, and each one has specific, practical steps.
How Your Body Starts Making Milk
Milk production happens in two stages. The first begins during the second half of pregnancy, when the milk-producing cells in your breasts start to mature. High levels of progesterone from the placenta keep production low during this phase, though some women can express small amounts of colostrum by late pregnancy.
The second stage kicks in after delivery. Once the placenta is gone, progesterone drops sharply while prolactin (the hormone that drives milk production) stays elevated. That hormonal shift, combined with rising cortisol and insulin, triggers copious milk production. Most women notice significant breast swelling and a surge in milk volume on days two or three postpartum.
The milk itself changes over the first two weeks. During week one, you produce colostrum: a thick, yellow liquid dense with antibodies and immune cells. Between days 7 and 14, this shifts into transitional milk, a blend of colostrum and the lighter, higher-volume mature milk. After two weeks, mature milk is fully established.
Building and Maintaining Your Supply
Milk production works on a supply-and-demand system. The more frequently milk is removed from your breasts, whether by nursing or pumping, the more your body makes. In the early weeks, most exclusively breastfed babies feed 8 to 12 times in 24 hours, roughly every 1 to 3 hours. That frequent removal is what signals your body to keep producing.
If you’re separated from your baby or supplementing with formula, matching that frequency with a breast pump helps protect your supply. Aim for at least 8 pumping sessions per day in the early weeks. Skipping sessions, especially overnight when prolactin levels are naturally highest, can slow production down.
Power Pumping for Low Supply
If your supply dips, power pumping mimics the cluster feeding a baby does during growth spurts. Set aside one hour and follow this pattern: pump for 20 minutes, rest 10 minutes, pump 10 minutes, rest 10 minutes, pump 10 minutes. Done once daily for several days, this can signal your body to increase output. Results typically show up within two to three days, though some women need a full week.
Nutrition and Calorie Needs
Producing milk is energy-intensive. Lactating women need roughly 450 to 500 extra calories per day beyond their normal intake, according to the National Institute of Child Health and Human Development. That’s roughly an extra meal or two substantial snacks. Staying well hydrated matters too, since breast milk is mostly water, but drinking beyond thirst doesn’t boost supply on its own. The goal is to avoid dehydration rather than to force extra fluids.
Do Herbal Supplements Work?
Fenugreek, fennel, blessed thistle, and other herbs have been used for centuries to boost milk production, but the scientific evidence is thin. The Academy of Breastfeeding Medicine has cautioned that while the long history of use is somewhat reassuring, there is little rigorous evidence on safety or efficacy. Standardized dosing doesn’t exist outside of clinical trials, and herbal preparations can contain contaminants.
A review of ten randomized controlled trials found low-certainty evidence that a few specific preparations increased daily milk volume by roughly 80 to 150 milliliters within a week. These included barley malt combined with lemon balm, anise seed tea, and lettuce syrup. Fenugreek, the most commonly discussed supplement, had the weakest evidence: two extremely small studies produced results too uncertain to draw conclusions from. If you’re considering any herbal supplement, it’s worth knowing the evidence is preliminary at best.
Inducing Lactation Without Pregnancy
People who haven’t been pregnant, including adoptive parents and some transgender women, can sometimes induce lactation. The most widely referenced approach uses a combination of hormonal birth control and a medication called domperidone to simulate the hormonal conditions of pregnancy, followed by regular breast stimulation once the medication phase ends.
In the standard version of this protocol, the process starts about six months before the baby arrives. A hormonal birth control pill provides estrogen and progesterone to prepare breast tissue, while domperidone raises prolactin levels. When the birth control is stopped (mimicking the progesterone drop at delivery), pumping begins every two to three hours to trigger and maintain milk production. An accelerated version condenses the hormonal phase to 30 to 60 days for parents with less lead time.
Induced lactation doesn’t always produce a full supply. Many parents who go this route supplement with formula or donor milk while continuing to build volume. Working with a lactation consultant who has experience with induced lactation makes a significant difference in outcomes.
Getting Donor Milk Through a Milk Bank
If you need breast milk and can’t produce enough yourself, accredited milk banks are the safest outside source. Banks affiliated with the Human Milk Banking Association of North America (HMBANA) follow strict protocols. Donors are screened with blood tests for HIV, hepatitis B and C, HTLV, and syphilis. They’re also evaluated for drug use, tobacco use, alcohol consumption, recent tattoos or piercings, and certain medications. Vegans who don’t supplement with B12 are deferred as well.
Once collected, the milk is pasteurized using the Holder method: heating to 62.5°C (about 145°F) for 30 minutes, then rapidly cooling it. This eliminates bacteria and viruses while preserving most of the milk’s nutritional and immune properties. Donor milk from accredited banks typically requires a prescription and costs between $3 and $5 per ounce, though some insurance plans and hospital programs cover it, particularly for premature or medically fragile infants.
Risks of Informal Milk Sharing
Peer-to-peer milk sharing through social media groups or online marketplaces carries real risks. The FDA has warned that when milk is obtained directly from individuals or through the internet, the donor is unlikely to have been adequately screened. Babies can be exposed to HIV, hepatitis, illegal drugs, and certain prescription medications through unscreened milk. There’s also no way to verify how the milk was stored or handled.
Some parents mitigate these risks by requesting that a donor complete blood testing, but there’s no enforcement mechanism, and home storage conditions are impossible to verify. If you choose informal sharing, understanding these risks lets you weigh them against your alternatives.
Practical Steps Based on Your Situation
If you’ve just delivered and want to establish supply, the single most effective thing you can do is feed or pump frequently in the first two weeks, at least 8 times per day, and avoid long gaps between sessions. Skin-to-skin contact with your baby also stimulates prolactin release and helps with latch.
If your supply has dropped, check the basics first. Are you pumping or nursing often enough? Are you eating and drinking adequately? Power pumping for a few days can jumpstart things. Herbal supplements are an option, but set realistic expectations given the limited evidence.
If you need breast milk but aren’t lactating, a HMBANA-affiliated milk bank is the safest route for obtaining screened, pasteurized milk. For those who want to breastfeed without a pregnancy, an induced lactation protocol started well in advance gives the best chance of producing meaningful volume.