Low milk supply: what helps and what's myth

Work it out for your family: Pumping plan. A pumping schedule for your goal and your hours away, with a freezer-stash target.

The short answer

Check your baby, not your breasts. Wet diapers, dirty diapers and steady weight gain are the real test [1][2]. Soft breasts and a small pump session often aren’t signs of low supply [3].
If supply is low, more frequent, effective milk removal is what works. Feed or pump more often, and get latch and pump-fit help from an IBCLC (a board-certified lactation consultant) [4][5][6].
Herbs, teas and lactation cookies: the evidence is limited. The Academy of Breastfeeding Medicine (ABM) can’t recommend any specific supply booster, herbal or prescription [4]. Medicines go through your provider.
Formula top-ups are fine. They aren’t a failure. Any amount of your milk still helps your baby [5][7].

The internet has plenty of lactation cookies to sell you. This page has none.

Worrying about supply is close to universal. The ABM notes that perceived or actual low supply is one of the most common reasons people give for stopping breastfeeding [4]. So start by finding out which one you have.

Is your supply actually low?

You can’t see ounces at the breast. You can see what comes out the other end. Signs your baby is getting enough [1][2][8][9]:

Wet diapers: 6 or more a day by 5 to 7 days old, with pale yellow or nearly colorless urine.
Dirty diapers: at least 3 to 4 yellow, loose stools a day by 5 to 7 days.
Weight: back to birth weight by about 2 weeks, then steady gains. The average newborn gains almost an ounce a day in the first month.
Swallowing: once your milk is in, you hear frequent swallowing while your baby nurses.
Content after feeds, often drowsy.

The AAP puts it simply: “A baby who is tracking along their growth curve as they should is very reassuring” [5].

Things that feel like low supply, but often aren’t

Your breasts or chest feel soft. Around 4 to 6 weeks, your body adjusts and stops feeling as full or lumpy. That doesn’t mean you don’t have milk [3].
Pump output jumps around. Time since your last session, the time of day and stress all change it. One side often makes more [3].
Your baby wants to feed all the time. Some babies feed as often as every hour at times. That’s cluster feeding, and it’s normal [8].
Your baby is fussy. Fussiness can come from colic or other things that have nothing to do with how much milk there is [5].

When to call the pediatrician

Call 911 if your baby can’t be woken, isn’t moving, or is very weak [10].

Call now if [9][10][11]:

there’s no urine in more than 8 hours, the urine is dark, or the mouth is very dry;
your baby won’t drink, or drinks very little, for more than 8 hours;
your baby is overly sleepy or has a sunken soft spot;
once your milk is in, you don’t hear your baby swallowing.

Get your baby weighed right away if they still seem hungry after most feeds, or your milk hasn’t come in after 5 days [9].

Call within 24 hours if your baby has fewer than 6 wet diapers a day (3 can be normal for a breastfed baby before day 5) [12].

Call soon if [9]:

after day 7, there are fewer than 6 wet diapers and 4 stools a day, the urine is dark yellow or specked with red, or stools are still dark;
your baby is still under birth weight at 2 weeks, or hasn’t gained at least 5 to 7 ounces a week since your milk came in.

Calling isn’t overreacting. It’s the job.

What helps

1. Remove milk more often

Milk is made to order. More frequent, thorough milk removal typically raises production, both at the next feed and over several days [4]. No supplement works without it: the ABM says boosters won’t raise supply if milk removal is infrequent or incomplete [4].

Children’s Mercy’s plan [6]:

If your baby nurses: offer the breast or chest every 2 to 3 hours, at least 8 to 12 times in 24 hours. Pump 5 to 10 minutes after feeds if you can.
If your baby doesn’t nurse: pump at least 8 times in 24 hours.
Feed or pump at night and early morning, when the milk hormone prolactin is naturally high.
Try warmth before, and gentle massage before and during, feeds or pumping. Gentle means gentle: the ABM warns that deep massage can injure tissue [18].

Exclusively pumping? Our exclusive pumping guide has the schedule, output targets and power pumping.

2. Get latch and fit help

Start with your pediatrician, who will check your baby’s growth and can help with latch and positioning. An IBCLC can look for other causes [5]. If you pump, check your flange fit and replace worn valves [5].

3. Give it a week, then ask again

If you see no increase in 7 days, call for breastfeeding help [6].

4. Look after the person making the milk

Drink water, eat well, and rest when you can [5]. We know. Rest. Ha. But it counts.

What’s weak, or myth

Lactation cookies, teas and herbs

The AAP says there are no special tricks or products needed. The foods and supplements marketed to boost milk aren’t necessary [5].

The ABM looked at the herbs most often mentioned, including fenugreek, goat’s rue, milk thistle, oats, fennel and blessed thistle. Its conclusion: there is “little or no scientific evidence for their effectiveness or safety.” It suggests the placebo effect may explain why so many people swear by them [4].

A cookie is a fine snack. It isn’t a supply plan.

Fenugreek

LactMed, the National Library of Medicine’s drugs-in-breastfeeding database, says the evidence is mixed: one meta-analysis found a mild effect, and another found no good evidence it works. Any effect may be mainly psychological [13]. It also lists side effects [13]:

stomach upset, including diarrhea, nausea and vomiting;
allergic reactions and worse asthma, with possible cross-reaction to chickpeas, peanuts and other legumes;
reported liver damage, alone or in herbal mixes;
interaction with warfarin, and caution if you have diabetes.

In one US survey, 45% of the 85 people who’d used it reported a side effect [13]. Supplements don’t need to be proven safe or effective before they’re sold, and labels don’t always match what’s inside [13].

LactMed says supply boosters should never replace a check of the things you can change, like how often and how well milk is removed [13]. If you’re still thinking of trying fenugreek or any other herb, ask your provider or pharmacist first.

Beer

Some cultures use beer to boost supply. The ABM says any effect seems to come from the hops or barley, while the alcohol itself may reduce milk production [4].

Prescription medicines

Some prescription drugs are used off-label to boost supply. The ABM says the research is still inconclusive, every option has side effects, and it can’t recommend any of them [4]. The FDA has recommended against domperidone for raising milk supply [4]. This is a conversation for your provider, after the basics above.

Why supply can drop suddenly

If your supply was fine and then dropped, look at these:

Illness or infection. Infections can affect your ability to make milk [5].
Your period coming back. The return of your cycle can affect supply [5].
Pregnancy can lower supply [4].
Some medicines. A single dose of pseudoephedrine, a common decongestant, can cut milk production. Repeated use seems to interfere with it. LactMed says to avoid it if your supply is new or already low [14]. Birth control with estrogen can lower supply, especially if it’s started before about 6 weeks [15][16]. Ask your provider or pharmacist before you stop or start anything.
Thyroid problems [5], stress [6], and skipped or short sessions, the most common reason supply dips at work [17].

Part of your breast or chest turning red, hot, swollen or tender, or a fever or flu-like symptoms, can mean mastitis. Call your provider [20]. Don’t pump extra or massage hard to clear it. The ABM warns that extra pumping drives oversupply and inflammation, and deep massage can damage tissue [18].

Formula top-ups are fine

If your baby needs more than you’re making right now, give it. The AAP’s advice for supplementing: offer your milk first, then formula as needed [5]. That’s a plan, not a failure. Any amount of your milk greatly benefits your baby [7].

And if feeding is wearing you down, that matters too. The AAP says a parent shouldn’t feel guilty choosing another way to feed if breastfeeding is adding to depression symptoms [19]. A fed baby and a parent who’s coping are both the point.

Sources

HealthyChildren.org (AAP), “How to Tell if Baby is Getting Enough Milk.” healthychildren.org
HealthyChildren.org (AAP), “Your Baby’s First Month: Physical Appearance and Growth.” healthychildren.org
Seattle Children’s, “Pumping to Maintain a Full Milk Supply” (PE3855). seattlechildrens.org
Academy of Breastfeeding Medicine, “ABM Clinical Protocol #9: Use of Galactogogues in Initiating or Augmenting Maternal Milk Production, Second Revision 2018,” Breastfeeding Medicine 2018;13(5):307–314. doi.org
HealthyChildren.org (AAP), “Low Breast Milk Supply: 5 Steps That Can Help.” healthychildren.org
Children’s Mercy Kansas City, “How to Make More Milk.” childrensmercy.org
Seattle Children’s, “Pumping to Start and Establish a Full Milk Supply” (PE2037). seattlechildrens.org
CDC, “How Much and How Often to Breastfeed.” cdc.gov
HealthyChildren.org (AAP), “Warning Signs of Breastfeeding Problems.” healthychildren.org
Seattle Children’s, “Bottle-Feeding (Formula) Questions.” seattlechildrens.org
HealthyChildren.org (AAP), “Choose Water for Healthy Hydration.” healthychildren.org
Seattle Children’s, “Jaundiced Newborn.” seattlechildrens.org
LactMed (National Library of Medicine), “Fenugreek.” ncbi.nlm.nih.gov
LactMed (National Library of Medicine), “Pseudoephedrine.” ncbi.nlm.nih.gov
LactMed (National Library of Medicine), “Ethinyl Estradiol.” ncbi.nlm.nih.gov
American College of Obstetricians and Gynecologists, “Postpartum Birth Control.” acog.org
HealthyChildren.org (AAP), “Expressing Breast Milk at Work.” healthychildren.org
Academy of Breastfeeding Medicine, “Clinical Protocol #36: The Mastitis Spectrum, Revised 2022,” Breastfeeding Medicine 2022;17(5):360–376. doi.org
HealthyChildren.org (AAP), “Postpartum Depression & Breastfeeding.” healthychildren.org
MedlinePlus (National Library of Medicine), “Breast infection.” medlineplus.gov

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