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  • Writer's pictureJosephine

Storing and Freezing Formula: Guidelines for Convenience and Safety

Baby bottles and powdered baby formula in a scoop on top of the table.
Storing Baby Formula

Parents often rely on infant formula to provide proper nutrition for their babies. However, storing and freezing formula correctly is crucial to maintain its quality and ensure the safety of your baby's food. This article provides guidelines for storing and freezing formulas effectively.

Understanding Formula Storage

1. Types of Formula

Infant formula comes in different forms, such as ready-to-use liquid, powdered, and concentrated liquid. Each type requires specific storage considerations to maintain its integrity.

2. Importance of Proper Storage

Proper storage of formula is vital to prevent spoilage, bacterial growth, and nutrient degradation. Following the guidelines will help preserve the quality and safety of the formula.

Storing Formula at Room Temperature

Unopened cans or bottles of formula can be safely stored at room temperature in a cool, dry place. However, once opened, the formula must be refrigerated promptly to prevent bacterial growth. Always check the manufacturer's instructions for specific storage recommendations.

Refrigerating Formula

Refrigeration is the most common method of storing formula once it has been opened. Here are some key points to remember:

  • Transfer the unused formula to a clean, airtight container.

  • Store the formula in the main section of the refrigerator, away from the door.

  • Keep the temperature of the refrigerator at 40°F (4°C) or below.

  • Use refrigerated formula within 24 hours.

  • Discard any leftover formula after 24 hours.

Freezing Formula

Freezing formula can be a convenient option for parents who want to store larger quantities. However, it's essential to follow these guidelines to maintain its quality:

1. Guidelines for Freezing

  • Choose a freezer-safe container or storage bag specifically designed for breast milk or formula.

  • Leave enough headspace in the container to allow the formula to expand as it freezes.

  • Label the container with the date of freezing.

  • Keep the freezer temperature at 0°F (-18°C) or below.

  • Use frozen formula within one to two months for optimal quality.

2. Thawing Frozen Formula

Thawing frozen formula should be done with care to preserve its nutritional value:

  • Move the frozen formula to the refrigerator and thaw it slowly.

  • Alternatively, place the container in a bowl of warm water to speed up the thawing process.

  • Once thawed, gently swirl the container to mix the formula thoroughly.

  • Use thawed formula within 24 hours and discard any leftovers.

Tips for Formula Storage

  • Always check the expiration date before using the formula.

  • Avoid storing formula in direct sunlight or near heat sources.

  • Regularly clean and sanitize storage containers to maintain hygiene.

  • Follow the specific guidelines provided by the formula manufacturer for optimal storage practices.


Proper storage and freezing of infant formula are essential to ensure the safety and quality of your baby's food. By following the guidelines outlined in this article, you can confidently store formula at room temperature, refrigerate opened formula, and freeze formula for later use. Remember to always prioritize the well-being of your baby and adhere to the manufacturer's instructions for the specific formula you are using.


1. Can I freeze powdered formula?

Yes, powdered formula can be frozen following the same guidelines mentioned in this article. However, it's important to note that the texture of the formula may change slightly after thawing.

2. How long can formula be stored in the refrigerator?

Opened formula can be safely stored in the refrigerator for up to 24 hours. After that, it should be discarded.

3. Can I refreeze thawed formula?

No, it is not safe to refreeze formula that has been previously thawed. Once thawed, use the formula within 24 hours or discard any leftovers.

4. Is it safe to store formula in glass containers?

Yes, it is safe to store formula in glass containers. Make sure the containers are clean and airtight to maintain the quality of the formula.

5. Can I mix breast milk and formula before freezing?

It is generally not recommended to mix breast milk and formula before freezing. Breast milk and formula have different storage requirements, and mixing them may affect their quality and safety. It's best to freeze them separately in appropriate containers.

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