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As a mother who pumps my own children and an IBCLC who has worked with thousands of parents, I know how heartbreaking it is to lose even one milk supply. That’s why this question comes up so often:
Can You Freeze Breast Milk?
The good news is, yes, sometimes you can. Yes, it is important to be careful with what you give the child, but when certain conditions are met – you can turn it off.
Here’s what you need to know:
If your milk has started to melt but you have ice crystals, can be safely returned to the refrigerator. This is especially useful during power outages or when an ice-cold cooler starts to heat up during travel.
But if the breast milk has thawed and is liquid, it should be used within 24 hours. After that, it should not be stopped or stored for feeding babies. Some people may say 48 hours, but 24 hours is recommended by professional organizations.
A quick reminder: if your baby has already eaten from the bottle, it cannot be refrozen or stored. When the baby’s saliva comes into contact with the milk, bacteria can grow rapidly. It is usually recommended that the baby consume the milk within two hours or throw it away.
What Happens When You Express Breast Milk
Freezing breast milk is not safe, but it is often safe in some cases. The main concern is that any cold exposure can partially destroy some of the milk’s protective properties and fat composition. This means your baby still gets all the calories and nutrients, but less of the immune protection that fresh milk provides.
Here’s what you need to know:
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If there is ice in the milkit is better to cool it again. The milk hasn’t thawed yet, so the bacteria don’t have time to grow.
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If the milk is completely thawedmust be used within 24 hours without refrigerating.
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Do not refreeze milk that has been left at room temperature. When milk is heated, bacteria can multiply rapidly.
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It will also freeze in case of accident. Think of it as a backup system for those “oops” times when your refrigerator door is left open, not a regular backup system.
In short, refreezing will not make your milk unsafe if done correctly, but the quality and immunity may be slightly reduced. If possible, use fresh or well-frozen milk for your baby to drink.
My Additional Tips for Safely Storing Breast Milk
Over the years, I’ve learned a few effective ways to save your hard-earned milk:
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Store milk in the back of your refrigerator, where the temperature is constant.
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Use ice packs in cold places if you know you will experience a delay (such as during a trip or an unexpected power outage).
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Freezing milk in small portions – this makes it easier to defrost what you need and reduces waste. There are some great 1-oz breast milk containers available on Amazon.
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Label each bag with the date and time so you always know what is safe to use.
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Check the parts of your pump – clean, well-maintained components help keep your milk quality and safe.
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If the freezer is out of power, don’t panic. Check for ice crystals before throwing anything away.
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Install alarms in the refrigerator to alert you of temperature changes.
Final Thoughts
Breast milk is my past, and I know how much time and energy goes into every ounce. Although freezing is not something you should rely on every day, it can be a useful tool in the right situations.
If you don’t know, it’s best to trust your gut and discard the suspicious bag. Your child’s safety is always our top priority. For more information on the instructions on to store breast milksee this article to find out Tips for Storing Breast Milk.
Need more help on your breastfeeding journey? Consider booking a actual application with our expert team of lactation consultants!