7 Important Things to Do When Formula Feeding

7 Important Things to Do When Formula Feeding

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Decide which formula is right for your baby and learn how to serve it safely to your infant.

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JUL. 13, 2021  4 MIN. READ

Once you've decided that formula feeding is in your postpartum plan, you might be overwhelmed with the variety of options. Given the number of formulas available, it's difficult to know which to choose. Additionally, learning the dos and don'ts of preparing formula for your baby can be a challenging postpartum task in and of itself. Here's how to decide which formula is right for your baby and how to feed your infant safely.

Choosing the Right Formula for Your Baby

For guidance, always start with a recommendation from your baby’s health care professional – who knows you and your baby well. Several types of formula are available. The most widely recommended variety is a cow's milk-based formula with iron. Fortunately, all formulas provide vitamins and minerals for your baby's development. For babies with lactose sensitivity, a sensitive infant formula that includes carbohydrates, such as maltodextrins, instead of lactose may be best. If a sensitive formula still makes your baby gassy, try a partially hydrolyzed formula, which uses whey protein.

Soy formulas are plant-based formulas available to vegetarian families or babies who can't tolerate dairy. There are also specialized formulas for those with dairy and soy allergies.

When choosing a formula for your baby, consider the ingredients and the way in which the formula is prepared. Generally, there are three forms of formula: powdered, concentrated liquid and ready-to-feed. The type you choose depends on your baby's preference and your budget. Powdered formulas tend to be the most affordable but require more measuring and mixing, while ready-to-feed formulas are the most expensive but don't require any preparation.

With all the options available, you'll need to weigh your baby's needs, your budget, and your desired ease of use. Use the Similac Formula Finder to help determine the formula that's right for your baby.

What to Consider When Preparing Formula

Now that you've decided on a formula, follow these guidelines to ensure feeding time goes smoothly.

1. Don't let the formula sit out.

If possible, prepare a bottle of formula immediately before feeding your baby. If you do have to mix a few bottles ahead of time refrigerate immediately. This is a good food-safety practice to minimize any potential microbial growth. Refrigerate any bottle you won't use immediately and serve it within 24 hours – or according to the refrigerated storage time on the product label.

2. Throw away any of the formula left in a bottle after a feeding.

Discard any formula left in the bottle as leftover formula has now been exposed to baby’s mouth and the environment and could spoil.

3. Know how much formula to prepare.

Since any excess formula will go to waste, it's best to measure the proper amount. For the first 6 months of life, a baby needs about 2 to 2.5 ounces of formula per pound per day. If your baby is 10 pounds, that's about 20 to 25 ounces per day. That said, each baby will eat a different amount. Look for cues to assess whether your child is full. They may turn their head to the side or stop sucking.

4. Don't microwave the formula.

Heating up formula doesn't offer advantages or health benefits. If your baby will take a cold bottle, don't heat it up. If they do prefer warm formula, use a bottle warmer or submerge the bottle in warm water, rather than using the microwave. One of the concerns in using a microwave oven for heating is the difficulty in temperature regulation; high temperatures may be reached very quickly. It is important to check the temperature of the prepared formula just prior to feeding.

5. Measure the water carefully.

Although it may be enticing to eyeball the amount of water you add to the formula, it's important to carefully follow the instructions on the container.  Measure the water first, and then add powder or concentrate. Too much water will dilute the nutrients in the formula.

6. Store the formula properly.

Follow the storage instructions on the label. Prepared formula should be refrigerated after opening or preparing.  Unopened formulas should be stored in a cool, dry place.

7. Check the "use by" date.

Most powdered formulas need to be used within one month of opening the container. If it takes you a while to finish a container of formula, write the date that you opened it directly on the container. Check the label for any specific instructions or a "use by" date, and don't serve the formula after that time.

Formula feeding doesn't have to be hard. By assessing your baby's feeding needs and following the best practices for preparing a bottle, you can help your infant grow properly and stay healthy.

How to Safely Prepare Powder Baby Formula

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Parents smile at baby as they make a baby bottle of formula.


How to Safely Prepare Powder Baby Formula


Key Takeaways:

• Parents and caregivers have so much to juggle with a new baby. Whether learning for the first time or refreshing your knowledge, knowing how to safely prepare powder baby formula is essential.

• A January 2024 article in Consumer Reports raised concerns about the accuracy of automated baby formula makers in delivering the correct formula-to-water ratios.

• When preparing baby formula manually, follow the label instructions on the container to ensure proper handling and preparation each time. With the right preparation, you can help ensure a nutritionally complete bottle for your baby.

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First Solid Foods for Baby: Developmental Signs and Milestones to Look For

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A man feeds solid foods to a baby sitting in a highchair.


One of the most exciting parts of caring for your baby is watching them grow and reach new milestones right before your eyes. They'll develop an appetite for and interest in solid foods during their first year of life. Your job, during this exciting journey together, is not only to guide their nutrition but also to decode their unique language of cues — a symphony of expressions, gestures and coos in reaction to these new sensations.

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