Can You Refrigerate Warmed Breast Milk Again?

As a new parent, it can be overwhelming to keep track of all the guidelines for storing and using breast milk. One question that often comes up is whether you can refrigerate warmed breast milk again. The answer is yes, but with some important guidelines to follow.

First, it’s important to understand why using warmed breast milk within 2 hours is recommended. When breast milk is warmed, it creates an ideal environment for bacteria to grow. The longer the milk sits at room temperature, the more bacteria can multiply, which can put your baby at risk of getting sick.

If you do not use the warmed breast milk within 2 hours, it is no longer safe to feed to your baby. Instead, you should discard it. However, if you need to refrigerate the warmed breast milk again, here’s what you need to know:

Guidelines for Storing Breast Milk

Freshly expressed breast milk can be stored in the refrigerator for up to 4 days.

Breast milk can be frozen for up to 6 months.

Thawed breast milk can be stored in the refrigerator for up to 24 hours.

Once breast milk has been warmed, it should be used within 2 hours.

Important Tips for Refrigerating Warmed Breast Milk Again

Here are some important tips to keep in mind when refrigerating warmed breast milk again:

  1. Store in a clean container

Make sure the container you use to store the breast milk is clean and has been sterilized. This can help prevent the growth of bacteria.

  1. Cool the milk quickly

Before refrigerating the warmed breast milk, cool it down quickly by placing it in a bowl of cold water or an ice bath. This can help prevent the growth of bacteria and ensure the milk stays fresh.

  1. Label the container

Label the container with the date and time the breast milk was originally expressed. This can help you keep track of how long the milk has been stored and ensure you use it within the recommended time frame.

  1. Use within 2 hours

Once the warmed breast milk has been refrigerated again, it should be used within 2 hours. If you do not use it within this time frame, discard it.

Things to Avoid

Here are some things to avoid when refrigerating warmed breast milk:

  1. Never refreeze breast milk after it has been thawed.
  2. Never put breast milk back in the fridge after your baby has taken a few sips. This can introduce bacteria from your baby’s saliva into the milk.


Refrigerating warmed breast milk again is safe as long as you follow the guidelines outlined above. It’s important to always prioritize your baby’s health and safety when it comes to feeding them breast milk. If you have any questions or concerns about storing or using breast milk, talk to your doctor or a lactation consultant.

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