Pros And Cons Of Mixing Breastmilk And Formula
Parenting Toddler Safety

Pros And Cons Of Mixing Breastmilk And Formula

What are the pros and cons of mixing breastmilk and formula? 

Surprisingly babies are natural adapters! But are you concerned about whether the baby is not full post- nursing?

If yes, are you wondering about mixing breastmilk with other solids to help your baby feel more satisfied?

Most working women find it difficult, or almost impossible, to express breastmilk at work.

That’s why a number of them choose formula-based nutrition for babies. Another option they tend to choose is to use donor milk.

Complementation of breast milk with formula should be monitored and not just offered based on will or feelings of necessity.

Gradually altering your nursing sessions as you begin incorporating formula into your feeding plans will make the transition from solely breastfeeding to combo feeding easier for you and your child. 

Formula milk will never be equal to breast milk if your child is still at a very tender age, so please verify your child is ready for formula.

Before introducing formula to your baby’s diet, do some research or talk with a medical professional or lactation consultant. 

They can assist you in determining how much formula to give at each feeding or throughout 24 hours.

Little tummies require more effort and longer time to absorb formula. 

Pros And Cons Of Mixing Breastmilk And Formula

Parents can then begin introducing solid foods while still breastfeeding for at least a year. “Exclusive nursing” refers to an infant who solely receives breastmilk.

Other liquids or solids, including water, are not provided. Breastfeeding may be both wonderfully rewarding and incredibly difficult. 

Breastfeeding parents may find the formula a wonderful alternative because it meets their nutritional needs while also allowing them to address and adjust to their own needs.

It doesn’t have to be an all-or-nothing situation for breastfeeding.

1. Is It Possible To Combine Nursing And Formula Feeding?

Sure, it is possible to formula-feed and nurse simultaneously if you’re wondering if you can mix breast milk and formula in the same bottle, yes!

You can mix the breastmilk and formula out of necessity with a low breast milk supply.

Or if the baby is not getting enough nutrition or sustenance to gain weight during their early days. 

There’s no arguing that breast milk has numerous advantages.

A mother’s milk adapts to suit the changing nutritional needs of her baby, provides antibodies that guard against illness, and may even lessen the incidence of sudden infant death syndrome.

While the American Academy of Pediatrics and the World Health Organization advocate exclusively breastfeeding for the first six months of a child’s life, parents understand that this isn’t always possible.

This unyielding expectation might lead to nursing burnout and premature cessation in mothers.

One small trial found that combining early restricted formulas with nursing for newborns had no detrimental effects on breastfeeding.

The formula contains the vitamins, minerals, carbs, lipids, and protein that a newborn needs to survive and flourish.

2. Nursing Tips

While nursing should be done whenever feasible, remember that partial breastfeeding is preferable to none, and you can find a happy medium that works for you and your family.

Breast milk is used for some feeds, and the formula is used for others in combination feeding.

It still provides you and your baby with the incredible health benefits of nursing, but it also provides an option when medical or other situations prevent you from exclusively breastfeeding.

However, there are some instances where the hazards of mixed feeding must be weighed against the benefits.

3. Pros

  • It is easier for babies to eat enough when fed in various ways. A baby’s ability to thrive depends on their ability to consume enough milk. Supplementing a baby’s diet if he isn’t getting enough from his mother is good. It’s crucial to determine whether your baby is getting enough breastmilk on its own. There are also techniques to help raise your milk production if it is low.


  • Breastfeeding mothers can take a break with mixed feeding. Keep in mind that even if you don’t want to feed your kid formula, you might be able to get donor milk for your infant.


  • Breastfeeding may last longer if you mix it up. It is not necessary to feed a newborn simply formula or breastmilk. Even a modest bit of breastmilk can be useful to a baby. Mixed-fed babies will tend to breastfeed for longer than babies who are only fed formula.

4. Cons

  • Mixed feeding necessitates extra effort. There’s no need to buy formula, mix it up, or clean bottles when a baby is exclusively breastfed. These activities can take a long time, especially if you’re juggling many other things.
  • It’s possible that mixed feeding will reduce supplies. Breast Milk supply is based on “supply equals demand.” Formula-fed babies may have a lower need for breastmilk.
  • Mixed feeding can aggravate inflammatory breast disorders. Breastfeeding your child regularly reduces your chances of experiencing sore or infected breasts. Engorgement, clogged ducts, and mastitis are examples of inflammatory breast illnesses that can be painful and make breastfeeding difficult. 
  • Breast refusal can be exacerbated by mixed feeding. When a baby is fed by combining breastfeeding with bottle feeding, there is a greater chance that the baby will acquire a preference for the bottle. Breastfeeding can become more difficult for mixed-fed babies, and they may even refuse to breastfeed. 


Now, you know about the pros and cons of mixing breastmilk and formula. Formula and breast milk don’t have to be mutually exclusive.

Breast milk, formula, or both can help a baby’s growth and development. Separate, mix, nurse, pump, and determine what works best for you and your child.

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Frequently Asked Questions

Why Shouldn’t Formula And Breastmilk Be Mixed?

Combining breastmilk and formula, for example, could result in breastmilk waste if the baby does not finish the milk (since the formula needs to be discarded).

Giving your pumped milk to your baby first and alone ensures that your “liquid gold” is swallowed completely and that less is wasted.

Why Isn’t Mixed Feeding A Good Idea?

Regular mixed feeding may make breastfeeding more difficult to maintain since it can interfere with maintaining a sufficient supply of breastmilk.

There’s no arguing that breast milk has numerous advantages and meets the baby’s nutritional needs.

It offers antibodies that protect against disease and may even reduce the chance of SIDS.

Breastfeeding is also beneficial to a new parent. It can hasten recovery, aid in treating postpartum depression and lower the incidence of some malignancies.

Is It Possible To Combine Breast Milk From Separate Pumps?

Yes, mixing breast milk from different pumping sessions is acceptable as long as the milk is at the same temperature before mixing.

Breastfeeding may be both wonderfully rewarding and incredibly difficult. It can be both a source of enormous joy and physical discomfort.

The good news is that you can have it both ways if you’re a tired parent. Breast milk and formula can both be fed to your infant successfully.



Iesha Mulla

Iesha is a loving mother of 2 beautiful children. She's an active parent who enjoys indoor and outdoor adventures with her family. Her mission is to share practical and realistic parenting advice to help the parenting community becoming stronger.

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