Lactation Cookies and Galactagogue Foods: What the Evidence Says
Lactation cookies, Mother's Milk tea, brewer's yeast, oatmeal, fenugreek — the list of foods and supplements claimed to boost milk supply is long, confidently shared, and mostly unsupported by rigorous evidence. That doesn't mean none of them work. It means the picture is more complicated than the packaging suggests.
What a Galactagogue Actually Is
A galactagogue is any substance believed to promote or increase milk production. They fall into two broad categories: herbal (fenugreek, blessed thistle, moringa, shatavari, fennel, goat's rue) and pharmaceutical (domperidone, metoclopramide). This post is about the food and herbal side — for pharmaceutical galactagogues, see our dedicated article.
The herbal and food-based galactagogues are deeply embedded in breastfeeding culture. Every lactation community has its favourite recipes. Every new mother gets told to eat oatmeal. Every ANR forum has a thread about fenugreek. The conviction behind these recommendations is genuine — people believe they work because they took them and their supply increased.
The problem is that correlation isn't causation, and supply naturally fluctuates for reasons that have nothing to do with what you ate.
The Evidence, Such As It Is
Fenugreek is the most commonly recommended herbal galactagogue and the most studied. A handful of small trials suggest it may modestly increase supply in some women, but the studies are poorly controlled, sample sizes are small, and results are inconsistent. The Academy of Breastfeeding Medicine's 2018 clinical protocol on galactagogues concluded that there is insufficient evidence to recommend fenugreek for increasing milk supply. It also noted potential side effects including gastrointestinal distress, a maple syrup odour in sweat and urine, and possible interactions with blood-thinning medications.
Brewer's yeast is a staple ingredient in lactation cookies. There is essentially no clinical evidence that it increases milk production. It's a source of B vitamins and chromium, both of which are beneficial generally, but the specific claim that it boosts supply has no scientific backing.
Oatmeal is recommended so universally that it feels like settled science. It isn't. There are no clinical studies demonstrating that oats increase milk production. The proposed mechanism — that the iron and fibre content supports general health, which supports lactation — is plausible but unproven as a direct cause-and-effect relationship. Oatmeal is good food. Whether it specifically helps you make more milk is unknown.
Moringa has somewhat better evidence than the others. A few small randomised controlled trials in the Philippines found that moringa leaf supplementation increased milk volume in postpartum mothers. The effect was modest, and the studies had limitations, but moringa is currently the herbal galactagogue with the most promising (if still preliminary) clinical data.
Fennel, blessed thistle, goat's rue, shatavari — all widely recommended, all with minimal to no clinical evidence. Traditional use in various cultures is extensive, but traditional use and clinical effectiveness are not the same thing.
Why People Believe They Work
Three things conspire to make galactagogues seem effective when they may not be:
First, supply naturally increases over time during the inducing process. If you start taking fenugreek in week four and your supply increases in week five, it's tempting to credit the fenugreek — but supply was going to increase anyway if you were nursing or pumping consistently. The fenugreek just happened to be there.
Second, the ritual matters. Making lactation cookies, brewing special tea, taking supplements — these are acts of intention and commitment. They remind you to think about your supply, to stay consistent with sessions, to take the process seriously. The psychological effect of doing something proactive is real, even if the specific substance isn't the active ingredient.
Third, hydration and nutrition genuinely affect supply. Many galactagogue foods are consumed alongside increased water intake and better overall nutrition. If someone who was dehydrated and eating poorly starts drinking Mother's Milk tea and eating oatmeal cookies, their supply may well improve — because of the fluids and calories, not the specific ingredients.
So Should You Bother?
This is where I give you the unsexy, honest answer: maybe.
If eating oatmeal and drinking lactation tea makes you feel good, keeps you hydrated, gives you a sense of agency in the process, and doesn't cost you a fortune — there's no harm in it. The foods themselves are nutritious. The ritual of making them can be a meaningful part of your nursing practice.
What I'd caution against is spending significant money on supplements with unproven claims, relying on galactagogues as a substitute for frequent nursing or pumping (which is what actually drives supply), or blaming yourself for "not taking the right things" when supply is slow to come in.
The single most effective galactagogue is consistent, frequent breast stimulation. Everything else is a supporting player at best. If your supply isn't where you want it, the answer is almost always more nursing or pumping before it's more supplements.
For more on the pharmaceutical side of supply support, see pharmaceutical galactagogues and herbal galactagogues: a detailed look. For the bigger picture of what drives milk production, start with the mechanics of making milk.
