Lactation cookies are snacks made with specific ingredients thought to promote breast milk production. The three most consistent ingredients across recipes and commercial brands are oats, brewer’s yeast, and flaxseed, though formulations vary widely. Some also include fenugreek. These ingredients fall under the umbrella of galactagogues, a term for any substance believed to help increase milk supply.
What’s Inside Them
At their core, lactation cookies are regular cookies (butter, sugar, flour, eggs) with a few additions that have a long history of use among breastfeeding mothers. The “big three” ingredients you’ll find in nearly every recipe are:
- Oats: Whole rolled oats or oat flour form the base of most lactation cookies. Oats contain natural plant compounds called saponins, which have shown prolactin-like activity in animal tissue studies. Prolactin is the primary hormone responsible for milk production.
- Brewer’s yeast: A nutritional yeast rich in B vitamins, beta-glucan, and bioavailable chromium. The B vitamins may support postnatal mood, which in turn can influence oxytocin release and milk flow. The chromium may play a role in milk production through its effect on growth factors related to insulin.
- Flaxseed: Ground flaxseed adds omega-3 fatty acids and phytoestrogens. It’s included for its potential hormonal influence, though direct evidence for milk supply benefits is limited.
Some commercial versions also add fenugreek, a seed that’s one of the most widely used herbal galactagogues worldwide. Recipes and store-bought brands vary significantly in how much of each ingredient they contain, so two different lactation cookies can have very different nutritional profiles.
Do They Actually Work?
This is where things get complicated. The individual ingredients have some theoretical basis for supporting milk production, but the evidence for lactation cookies as a finished product is thin. In a randomized controlled trial of 176 participants, women ate either lactation cookies containing oatmeal, brewer’s yeast, flaxseed, and fenugreek, or conventional cookies that matched the lactation cookies in weight, calories, and appearance but lacked those galactagogue ingredients. The study ran for one month of daily intake.
The biological plausibility is there in pieces. Saponins from oats triggered prolactin-like effects in mouse mammary tissue, with peak response occurring two to four hours after exposure. But that same research found that at higher concentrations, saponins actually impaired the normal hormonal stimulation of milk protein and fat production. In other words, more isn’t necessarily better, and lab findings in animal tissue don’t automatically translate to eating a cookie.
Brewer’s yeast supplementation has been studied primarily for its selenium content and its effect on breast milk composition rather than volume. The proposed mechanisms, like improved mood from B vitamins leading to better oxytocin release, are plausible but remain largely theoretical in the context of cookies.
Many women report feeling like their supply increased after eating lactation cookies. That perceived boost is real and worth acknowledging, but it’s hard to separate from other factors: the extra calories, the increased hydration that often comes with snacking, the placebo effect, and the simple confidence boost of feeling like you’re doing something proactive.
Nutritional Considerations
Lactation cookies are still cookies. Most commercial versions contain significant amounts of sugar and butter alongside their galactagogue ingredients. A typical serving runs around 56 grams (roughly two cookies), and the calorie count is comparable to any other homemade or packaged cookie of that size. If you’re eating several per day, those calories add up.
That’s not inherently a problem. Breastfeeding burns roughly 300 to 500 extra calories per day, so the additional energy from a cookie or two fits within most nursing mothers’ needs. But if you’re choosing lactation cookies over more nutrient-dense snacks like whole grains, nuts, or fruits, you could be missing out on a broader range of vitamins and minerals that support both your health and your milk quality.
What Reliably Increases Milk Supply
The single most effective way to increase milk production is frequent, effective milk removal. Your body operates on a supply-and-demand system: the more milk that’s removed from the breast, the more your body produces to replace it. In the early weeks, this means feeding 8 to 12 times every 24 hours, offering both breasts at each feeding, and making sure your baby has a good latch.
Feeding on demand rather than on a fixed schedule is key. Letting your baby set the pace sends consistent signals to your body about how much milk to make. If you’re pumping, the same principle applies: more frequent sessions with thorough emptying will do more for your supply than any food or supplement.
Adequate hydration, sufficient calorie intake, and rest also play supporting roles. Stress and exhaustion can suppress oxytocin, which is the hormone responsible for the let-down reflex that releases milk. So anything that reduces stress, including the ritual of sitting down with a cookie and a glass of water, has indirect value.
Are They Worth Trying?
Lactation cookies are safe for most people and their ingredients are ordinary foods. If you enjoy them and they give you a morale boost during a challenging phase of breastfeeding, there’s no strong reason to avoid them. The ingredients aren’t harmful, and the act of prioritizing a snack and some hydration is genuinely helpful.
Where they become a concern is when they replace more effective strategies. If your supply is genuinely low, cookies alone are unlikely to solve the problem. Frequent nursing or pumping, a good latch, and adequate nutrition are the foundation. Lactation cookies can sit alongside those strategies as a supplemental comfort, but they shouldn’t be the first or only thing you reach for when supply feels low.