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How to Increase Milk Supply: A Lactation Consultant’s Guide to What Actually Works

Watching your pump output shrink, or feeling like your baby is suddenly hungrier than what you can produce, is stressful. It can make you question everything you’re doing. As a lactation consultant, how to increase milk supply is the question I get more than any other, and there are real, research-backed answers. A dip after an illness, a growth spurt, a stressful season, or heading back to work does not mean your breastfeeding journey is over.

To increase milk supply, remove milk from the breast more often and more thoroughly. Feed on demand, add pumping or hand expression after or between feedings, try hands-on pumping, and check your flange size and latch. Supplements and lactation cookies rarely help without frequent, effective milk removal.

Before we dive in, grab my free Feeding Cues cheat sheet so you can catch every hunger cue your baby gives you.

Milk Supply Runs on Supply and Demand

If you’ve been around my page for a while, you’ve heard me describe breastfeeding as a supply and demand relationship. Milk production runs on a complex system of hormones involving the mammary glands, the thyroid, and the brain. But when you boil it all down, the takeaway is simple. When you remove milk from the body, your body responds by making more milk.

Every time you remove more milk, you are essentially placing an order for a bigger supply. So at the root of it, the best way to increase your milk supply is to remove more milk, more often.

Start by following your baby’s feeding cues and feeding on demand. This matters most in the early days postpartum while your supply is being established. Breastfed newborns should eat around 8 to 12 times in 24 hours. Older babies typically eat 6 to 8 times in 24 hours.

How to Increase Milk Supply When Pumping

Once you’re feeding on demand, you can boost your supply further by adding extra stimulation. Here are the four ways I recommend to my own clients.

Pump or hand express after a feeding

Your breasts are never truly empty. Pumping after a feeding tells your body to increase production to keep up with the extra output.

Pump or hand express between feedings

If there is a time of day when your baby takes a longer stretch between feedings, typically the evening or nighttime for most babies, that is a great window to add a pumping session.

Pump or collect milk from the other breast

If your baby only took one side, the other breast is an easy opportunity. This is a great time to use a milk collector, such as a Haakaa silicone pump or Boon Trove. They are designed to be worn on the opposite breast during feeding to collect your letdown, so they’re especially useful if your baby tends to nurse on one side.

Try power pumping

Power pumping mimics cluster feeding to signal your body to make more milk. Pump for 10 minutes, rest for 10 minutes, and alternate that pattern for one hour. Do this once a day for 3 to 7 days until you see your supply respond.

Use your hands while you pump or nurse

This one is backed by some of my favorite research. Gentle breast massage during pumping stimulates oxytocin release, and research on hands-on pumping published in the Journal of Perinatology found that mothers who combined hand techniques with electric pumping significantly increased their daily milk volume. Follow-up work from the same research team also linked hand techniques to higher calorie and fat content. A hands-free pumping bra makes it much easier to massage while you pump.

Check Your Flange Size and Pump Parts

An incorrect flange size can quietly sabotage your supply. An ill-fitting flange can cause pain, soreness, clogged ducts, and restricted milk flow. A flange that is too large draws in too much of the areola, which can become red and uncomfortable from rubbing. A flange that is too small creates excess friction on the nipple itself. With a correct fit, your nipple moves freely within the flange tunnel and only a small amount of areola is drawn in.

How to measure your flange size:

1. Grab your measuring tool. You can use a measuring tape at home, this nipple ruler, or this free printable measuring tool.
2. Measure the diameter of your nipple, the width across in millimeters. Do not include your areola, the larger area around your nipple.
3. Add 1 to 3mm to your diameter to get your flange size.

For step-by-step help, download my free Flange Sizing Cheat Sheet so the how-to is right at your fingertips when you need it.

And don’t forget your pump parts. Worn out valves and membranes cause a drop in suction, which decreases your pump’s effectiveness and, over time, your supply. Follow the manufacturer guidelines for replacement. On average, plan to replace parts around every 90 days, though this varies with how often you pump. Need replacements? You can find all my recommended pump replacement parts here.

Reevaluate Your Latch and Positioning

A poor latch is one of the most common causes of ineffective milk removal, which directly lowers supply over time. A good latch should be comfortable and pain free, and it is a foundational piece of a successful breastfeeding journey. There is a lot to cover on this topic, which is why I wrote a whole post on getting a deep, pain-free latch. I recommend starting there if supply has you worried.

The Truth About Galactagogues and Foods That Increase Milk Supply

Galactagogues are medications, foods, and herbs believed to increase milk supply, and they are rarely the quick fix social media makes them out to be. Most are either poorly researched or show inconclusive, conflicting evidence. Lactation cookies and sports drinks are popular for a reason, they feel like an easy win on a hard day. But used alone, without frequent and effective milk removal, they will likely not move the needle.

The evidence backs this up. The Academy of Breastfeeding Medicine’s clinical protocol on galactogogues reviewed the research and concluded that current studies on both pharmaceutical and herbal galactagogues are inconclusive, and that no specific galactagogue can be recommended. Fennel and fenugreek have some mixed, limited findings behind them, while milk thistle, brewer’s yeast, oats, and spirulina lack conclusive evidence for increasing supply.

There is often little harm in trialing a galactagogue, but treat it as a supporting player, never the main strategy. And as with any supplement or medication while breastfeeding, talk with a healthcare professional before starting something new.

Everyday Habits That Protect Your Milk Supply

Avoid pacifier overuse. Especially before breastfeeding is well established, usually around 3 to 4 weeks, a pacifier can mask hunger cues. Missed cues lead to fewer feedings, and fewer feedings lead to a lower supply.

Practice frequent skin-to-skin. Skin-to-skin contact supports milk production and keeps baby close to the breast, making responsive feeding more likely. It does not have to be reserved for right after birth. It can help weeks or even months later.

Take care of yourself. Stress and anxiety can inhibit your letdown, so try to feed or pump in a calm environment, practice some deep breathing, or take a warm bath. And remember hydration and nutrition. Your body needs fuel to feed your baby, so your needs count too.

FAQ: Increasing Milk Supply

How can I increase my milk supply fast?

Remove more milk, more often. Feed on demand, then add pumping or hand expression after or between feedings. There is no true overnight fix, but your body typically responds to increased removal within several days.

Does power pumping really increase milk supply?

For many moms, yes. Power pumping mimics cluster feeding. Pump 10 minutes, rest 10 minutes, and repeat for one hour, once daily for 3 to 7 days, and watch for your supply to respond.

What foods increase milk supply?

No food is proven to reliably increase supply. Oats, brewer’s yeast, and lactation cookies lack conclusive evidence. Focus on frequent milk removal, balanced nutrition, and hydration instead.

How often should I nurse or pump to increase milk supply?

Newborns should eat 8 to 12 times in 24 hours, and older babies 6 to 8 times. To build supply, add pumping sessions on top of that baseline rather than spacing feedings out.

Can the wrong flange size decrease milk supply?

Yes. A flange that is too big or too small can cause pain, clogged ducts, and restricted milk flow, all of which reduce how much milk is removed. Measure your nipple diameter and add 1 to 3mm to find your size.

What Matters Most: Milk removal is the engine behind your supply, so start there before you spend a dime on supplements. And please hear this. The number of ounces you produce has zero connection to your worth as a mom.

Increasing your supply usually takes patience and time, and it rarely feels easy in the middle of it. You are showing up for your baby by even reading this, and that already says a lot about the kind of mom you are. Take one or two strategies from this post and start there. Small, consistent changes to how often you remove milk will do more than any cookie or tea ever could.

If you’re struggling with low supply and want a rock-solid plan, my Low Milk Supply Guide walks you through getting to the root cause with research-based strategies, practical tips, and the deeper explanations I couldn’t fit here.

Looking for more?

• Breastfeeding Latch 101: How to Get a Deep, Pain-Free Latch
• Colostrum Harvesting: How to Hand Express Colostrum Before Baby Arrives

Happy feeding, friend.