How to increase milk supply, and how to tell if it is low

No. Pump output does not reliably show how much milk your baby removes at the breast. Some babies remove milk better than a pump does. A low pumping session by itself does not mean your supply is low.

Not usually. Softer breasts are often part of normal regulation, especially after the early weeks. The key is whether your baby’s diapers and weight are on track. Softer breasts with fewer diapers, slower weight gain, or a very sleepy baby should be checked.

“Keep feeding” can be reasonable general advice, but it does not explain what is happening when feeds are not working or your baby is not growing well. If something still feels off, the next step is an assessment. We look at what your baby is actually transferring and whether something is limiting your supply, so the plan is based on what is happening instead of more waiting.

It depends on why supply is low. Supplements, teas, herbs, and foods are not all the same, and they are not right for every parent. We treat them as education, not a blanket recommendation, and we do not point you to a specific product or dose here. The foundation is still effective milk removal, once we know milk removal is the issue.

Sometimes, but medication is not a fix-all. The prescription options used for supply, metoclopramide, often called Reglan, and domperidone, work mainly by raising prolactin, the hormone involved in milk production. They tend to help only when low prolactin is part of the problem. If supply is limited by milk transfer or another cause, raising prolactin may not solve it. Using either medication for supply is off-label, and domperidone is not available in the United States.

Both medications carry risks that should be discussed with your doctor. Metoclopramide can worsen or contribute to depression, which matters especially after birth. Domperidone can affect heart rhythm, with greater concern for people with a long QT interval, so it is worth asking your doctor whether an EKG makes sense before considering it. Side effects can be greater at higher doses and with longer use. Stopping or tapering these medications should be done under your doctor’s guidance, because coming off them can bring mood or other psychiatric symptoms for some people.

Before starting either medication, it is also worth asking your prescriber whether labs make sense first, such as prolactin, thyroid, iron, and markers of insulin resistance or hormonal imbalance. Those results can sometimes point to a cause that is more treatable than the medication can reach. We are not against these medications. When they are used, they work best when the feeding side and the medical side are both being addressed.

Sometimes supplementing is the right call, and sometimes it is necessary. That decision should be made with your pediatrician and your lactation support. When supplementing is needed, it can often be done in a way that also protects your supply. Feeding your baby and working on supply belong in the same plan.

Donor breast milk can be an option while you are working on supply. The safest source is screened, pasteurized milk from an accredited milk bank. In our area, that is the Mothers’ Milk Bank at Austin, which screens donors and pasteurizes milk. (Our Magnolia office is one of their milk drop-off locations, so parents with extra milk to donate can bring it there.) Bank milk usually requires a prescription and is prioritized for babies with medical need, so availability varies. This is something to talk through with your pediatrician.

Some parents also use milk shared directly by another parent when no money changes hands. This is often called peer-to-peer sharing. Shared milk is not screened or pasteurized the way milk bank milk is, so it carries risks, including infection and exposure to medications or other substances. Those risks can be reduced, but not erased. A widely used framework for sharing milk more safely is the Four Pillars of Safe Breast Milk Sharing: making an informed choice, screening your donor, handling milk safely, and home-pasteurizing milk before use. Home pasteurization can reduce the risk of passing on some infections, and there are step-by-step instructions for doing it at home. Eats on Feets is one network parents use to find local donors and follow these principles.

We do warn against buying breast milk online. Buying milk is different from milk sharing when no money changes hands. When milk is sold by a stranger online, anonymity and financial incentive work against safety. In one study, most breast milk bought over the internet was contaminated with bacteria that can cause illness, often from poor collection, storage, or shipping (2013 study). In a follow-up study, about one in ten purchased samples had enough cow’s milk added to rule out accidental contamination, which can be dangerous for a baby with cow’s milk allergy or intolerance (2015 study). There is no reliable way to know whether milk bought from a stranger has been handled safely, tampered with, or exposed to medications or other substances, so we do not consider purchased milk a safe option for your baby.

Whichever route you are weighing, we can help you think through the feeding side and the risk questions alongside your pediatrician, especially if your baby is premature or has any health concerns.

It depends on the cause and on where you are starting. Some changes take time. Most supply-building steps need at least four days of consistency before you can fairly judge whether they are helping. The goal is to find the cause, build a realistic plan, and adjust based on how your body and your baby respond.

Yes, there is not just one path in breastfeeding. Some parents can increase supply and return to full breastfeeding. Some continue breastfeeding while also using formula or donor milk. Some choose to pump and bottle feed, and some use devices such as an at-breast supplementer to provide additional formula or milk to the baby while feeding at the breast. The thing to remember is that any amount of breast milk has value. Our goal is to support safe feeding while helping you understand what is possible in your situation.