Several foods have a long traditional reputation for boosting breast milk, though the scientific evidence behind most of them is modest. The strongest factor in milk production is frequent, effective breastfeeding or pumping, but certain foods may offer additional support, particularly when combined with adequate calories and hydration. Here’s what the research actually shows about specific foods and what matters most for supply.
Why Supply Starts With Demand, Not Diet
Breast milk production runs on a supply-and-demand system. The more milk your baby removes, the more your body makes. No single food can override this basic mechanism, which is why frequent nursing or pumping is the most reliable way to increase output. That said, your body needs fuel to manufacture milk. The CDC recommends an additional 330 to 400 calories per day for breastfeeding mothers compared to what they ate before pregnancy. Falling short on calories or fluids can quietly limit what your body is able to produce.
Staying well-hydrated matters too, though drinking extra water beyond thirst won’t further boost supply. The goal is simply to avoid dehydration, which can slow things down. Keep a water bottle within reach during feeding sessions and drink when you’re thirsty.
Oats and Whole Grains
Oats are one of the most commonly recommended foods among lactation consultants and nursing mothers. They contain beta-glucan, a type of soluble fiber that some researchers believe may influence prolactin, the hormone responsible for milk production. A clinical trial (the BLOOM study) has been designed to test whether beta-glucan supplements genuinely increase supply in mothers of preterm infants, but definitive results aren’t yet available. In the meantime, oats are a solid choice simply because they’re calorie-dense, rich in iron, and easy to prepare. A bowl of oatmeal or overnight oats offers a quick, nutrient-packed meal during a time when cooking feels like a luxury.
Moringa Leaves
Moringa is one of the few foods with clinical trial data showing a measurable effect on milk volume. A systematic review found that moringa leaf supplementation was associated with roughly a 30% increase in daily breast milk volume. The leaves are rich in iron, calcium, and vitamins A and C. In many parts of Asia and Africa, moringa powder is stirred into soups or smoothies. If you want to try it, moringa leaf powder is widely available and generally well tolerated.
Fenugreek
Fenugreek seeds are probably the most well-known herbal galactagogue worldwide. Dosages typically used to increase milk supply range from 1 to 6 grams daily. In a survey of 188 nursing mothers in the United States, 54% of those who tried fenugreek felt it increased their supply. However, 45% also reported side effects.
The most distinctive side effect is a maple syrup odor in your urine, sweat, and sometimes your breast milk, caused by a compound called sotolon in the seeds. Some mothers also noticed increased gassiness in their babies or an oversupply of milk. One study using 7.5 grams daily for seven days found that infants in the fenugreek group urinated more frequently, suggesting they were getting more milk. Fenugreek is not recommended for people with peanut or chickpea allergies, as it belongs to the same plant family.
Fennel
Fennel seeds contain anethole, a plant-based compound that mimics estrogen in the body. Anethole does pass into breast milk. Fennel has been used traditionally in teas and cooking to support lactation, though large clinical trials are limited. Fennel tea or crushed fennel seeds added to food are the most common ways nursing mothers use it. Some mothers find fennel tea soothing and easy to work into a daily routine.
Green Papaya
Unripe (green) papaya is a traditional galactagogue in India, Indonesia, and parts of Africa and the Pacific Islands. It’s typically eaten cooked, not raw. A small study found that papaya leaf extract at 800 mg daily raised prolactin levels after eight days of use. In one trial, mothers who consumed a galactagogue mixture containing papaya leaves produced noticeably more milk by the third week postpartum (801 mL per day versus 656 mL in the control group) and the gap widened by week four. However, these studies used papaya as part of herbal mixtures rather than on its own, so it’s hard to isolate papaya’s individual contribution. Green papaya soup is a popular preparation in Southeast Asian cuisines and is worth trying if you enjoy the flavor.
Brewer’s Yeast
Brewer’s yeast is a common ingredient in lactation cookies and supplements. It’s rich in B vitamins and chromium. While animal studies suggest it may support milk production, researchers attribute this to improved overall nutrition rather than any direct effect on lactation hormones. If your diet is already well-balanced, brewer’s yeast is unlikely to offer a dramatic boost, but it can help fill nutritional gaps, particularly for B vitamins, which nursing mothers need in higher amounts.
Do Lactation Cookies Actually Work?
Lactation cookies typically combine oats, brewer’s yeast, and flaxseed into a convenient snack. They’re widely marketed to nursing mothers, but a randomized controlled trial of 176 participants found no measurable difference in milk production between mothers who ate lactation cookies daily for a month and those who didn’t. Both groups saw similar, modest increases in output over time. The researchers concluded that recommending lactation cookies “may deliver false hope and unnecessary financial costs at a vulnerable time.”
This doesn’t mean the individual ingredients are worthless. It does suggest that packaging them into a cookie at typical serving sizes isn’t enough to move the needle. You’re better off eating a full bowl of oatmeal or taking a targeted supplement like moringa than relying on a specialty cookie.
Foods That May Reduce Supply
Just as some foods are believed to help, a few are traditionally used to suppress milk production. Sage and parsley are both considered anti-galactagogues. Parsley is believed to lower prolactin levels, and sage has historically been used to help with weaning or to manage oversupply. Neither herb has been tested in rigorous human clinical trials, but the traditional use is widespread enough that many lactation professionals advise nursing mothers to avoid consuming large amounts of either herb (small amounts in cooking are generally not a concern).
Peppermint oil is another commonly cited supply reducer, particularly in concentrated forms like peppermint tea consumed in large quantities. Again, the evidence is traditional rather than clinical, but it’s worth being aware of if you notice a dip in supply.
Alcohol and the Beer Myth
You may have heard that beer increases milk supply. It doesn’t. More than moderate alcohol consumption actively interferes with the milk ejection reflex (letdown), and excessive intake over time can shorten breastfeeding duration by decreasing production. Alcohol from a single standard drink (about 12 ounces of 5% beer) can be detected in breast milk for two to three hours. Two drinks extend that window to four to five hours, and three drinks to six to eight hours. The polysaccharides in barley may have some theoretical benefit, but any effect is far outweighed by alcohol’s negative impact on the hormones that release milk.
What Matters Most in Practice
The most effective strategy for increasing breast milk combines frequent milk removal with adequate nutrition. Eat enough total calories, stay hydrated, and nurse or pump at least 8 to 12 times per day in the early weeks. If you want to add galactagogue foods, moringa has the strongest clinical evidence, fenugreek has the longest track record (with some side effects to watch for), and oats are the easiest to incorporate daily. Green papaya and fennel round out the traditional options with some supporting data.
Keep in mind that perceived low supply is more common than actual low supply. If your baby is gaining weight appropriately and producing enough wet and dirty diapers, your supply is likely fine even if it doesn’t feel that way. When supply genuinely falls short, working with a lactation consultant to address latch, positioning, or feeding frequency will almost always have a bigger impact than any dietary change alone.