Best Formula for Sensitive Tummy and Constipation (2021 Reviews)

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Is your baby suffering from gaseous stomach and constipation?

Formula-fed newborns or breastfed babies who are allergic to a certain composition of the mom’s food are typically vulnerable to this. On the other hand, your baby may be suffering from constipation because it may be too soon for the formula food.

The good thing is- there are formula foods that are purposively designed for gas, constipation and sensitive tummies. Though there are other amazing brands, we highly recommend a careful mummy to choose from Enfamil or Similac.

To a rookie mom, identifying the best formula for sensitive tummy and constipation can be stressful and a pain in all the wrong places.

Because babies are different, it is important you have a list of several baby formulas you can choose from, so that you’re able to have options if one formula does not work for your baby.

Best Formula for Sensitive Stomach and Constipation 

1. Gerber Good Start Gentle Infant Formula

Gerber Good Start Gentle Infant Formula is modelled with ingredients that do not cause constipation, stomach issues or any kind of sensitivity. Ingredients present include omega 3 DHA and ARA that plays a major role in the development of the brain, eyes and the nervous system. This formula does not include any genetically modified ingredient.

Together with these are essential oils derived naturally from plants, carefully added in appropriate doses to closely resemble the breast milk. The plant oils help in the absorption of soluble vitamins like vitamin D, E and A for body energy.

Lactose obtained from cows without rBST is also added to act as source of energy just like the human milk in the form of whey and casein.

Good thing is all the vitamins and minerals present are FDA and USDA approved as without artificial growth hormones, pesticides, corn syrup or other synthetic ingredients.

For fussy babies, the company incorporates proteins that are easily digested by the sensitive tummies of babies.


  • Ingredients present do not cause constipation or stomach issues
  • Leads to soft stools
  • Tastes good


  • Only appropriate to babies under 12-months

2. Gerber Good Start Infant Formula

Gerber brand is another leading company in baby formula production so you can be sure the product is safe based on the many years’ worth of use by parents.

First off, the formula does not include milk from animals treated with artificial hormones. Plus, there are no GMO ingredients thus the formula is suitable for babies with sensitive tummies.

Rather, it includes HMO, an ingredient that’s present in breast milk to promote a heathy digestive and immune system.

Additionally, it is comprised of comfort proteins for easy digestion by the sensitive tummies and DHA that supports the development of brain and eyes. Easy digestion promotes soft stools that’s easy to pass by the tiny babies.

Inside also there are probiotics that are proven to reduce, fussiness, gas and crying time by up to 50% in colicky babies. For other moms, it’s a great supplement for babies with acid reflux, congestion and spit up babies. It is modelled to be a complete nutrition for use throughout the first year of a baby’s life.


  • Probiotics help soothe and reduce crying time
  • Ingredients easy to digest


  • Only suitable for babies in first year

3. Enfamil Nutramigen Baby Formula

If your infant is allergic to cow’s milk, then you can opt for Enfamil Nutramigen since the formula is made with extensively hydrolyzed proteins for colic and allergy relief.

The hydrolyzed proteins work together with LGG probiotics to promote a healthy digestive and immune system that is capable of fighting allergies and other diseases in future. These proteins are easy to digest for a consistent soft stool and your baby will not experience constipation.

The infant formula is nutritionally balanced and does not contain GMO ingredients, sucrose and Lactose. Instead, the ingredients encompass omega-3 ARA, DHA, choline and LGG that are nutritious like the breast milk.

It has been proven to work wonders in promoting a healthy skin and reducing excessive crying within a maximum of 48-hours. Babies who consume the formula are able to overcome eczema, asthma, urticaria and rhino-conjunctivitis that attacks babies at the age of 3-years.


  • Hydrolyzed proteins are easy to digest
  • No sucrose and lactose for intolerant babies


  • Pricier

4. Earth’s Best  Infant Formula

Earth’s Best Organic is very popular among moms because of a plethora of reasons. This infant formula for sensitive stomach takes the place of breast milk and is comprised of all the nutrients that are present in milk.

For babies with milk formula issues, you can choose to get solar based; partially hydrolyzed proteins for babies who are faced with fussiness and gas or digestible formula that is a composition of digestible proteins. The composition of lactose is little for your infant’s sensitive tummy to digest. 

Earth’s Best contains ARA, DHA and two fatty acids that are present in milk for your baby’s brain and eye’s health. Plus, it is fortified with iron for the development of red blood cells, lutein for eyes and prebiotic fiber for the reinforcement of your baby’s immunity.

This formula is easy to digest, with iron that is certified by FDA as appropriate for infant for the first 12 months after birth. It is Non-GMO and does not contain artificial flavors or synthetic fertilizers and pesticides.


  • Affordable price
  • Easily digestible


  • Taste not good although pleasant some users

5. Similac Pro-Sensitive Non -GMO Infant Formula

Similac Pro-Sensitive is specifically designed for fussy and gassy baby’s because it does not contain lactose that causes tummy sensitivity. Instead, it contains important nutrients that are also found in breast milk that nourishes and supports the development of your baby’s immune system.

Although Similac Pro-Sensitive contains cow milk, it contains carbohydrate that reduces the intensity of gas in babies. So, if your baby is sensitive to lactose or is often a victim of gaseous stomach, then this brand is great for them.

It contains important components like DHA, vitamin E and lutein, nutrients that are also contained in breast milk and aid in your baby’s eye and brain development. Because of this, the brand is highly recommended by pediatricians and moms.

Similac for sensitive stomachs is a complete diet, enough for your baby’s growth for the first year as it contains all important nutrients for your overall baby’s growth. It is easy to digest and will not be hard for your baby.


  • Good price
  • The taste is great
  • No digestion issues


  • May be foamy to some users 

6. Similac Pro-Sensitive Non-GMO Infant Formula With Iron

Like other formula brands, Similac Pro-Sensitive is a complete nutrition to your baby for the first year. It does not contain GMOs and is not genetically engineered.

Similac Pro-Sensitive contains 2′-FL that circulates to all body parts and fosters the development of your baby’s immune system.

If your baby throws up food, then this will be a great solution for them. It is ideal for babies with gaseous tummy, fussy eating and baby’s sensitive to lactose hence restoring your piece of mind. However, it is not ideal to babies who are suffering from galactosemia.

This infant formula contains important nutrients that are found in breastfed milk like lutein, DHA and vitamin E which is important in cell development. DHA fosters the development of the baby’s eye, brain and the general normal growth. It is nutritious, high in quality and is highly recommended by moms and pediatricians.


  • The pricing is great
  • Easy packing
  • Easy to digest


  • The formula may be foamy

7. Similac Pro Advance Non-GMO Infant Formula

Like popular infant formulas from Similac, this too does not contain artificial growth hormones. It contains special nutrients that are also present in milk and are important in the development of your baby’s immune system.

The blend contains DHA for brain development, vitamin E for cells development and lutein for eyes health.

Similac Pro Advance Non-GMO Infant Formula is easy to prepare, you only need to use the enclosed scoop to combine water and powder and mix well in a clean bottle.

This formula reduces fussiness, spit-up and gassiness within one day of use, and that’s why Similac Pro infant formula is recommended by moms and pediatricians.


  • Extra-large tubs
  • No-GMO


  • May be expensive to some users

8. Enfamil Prosobee soy-based infant formula

Enfamil Prosobee is another best infant formula for sensitive babies and does not contain cow’s milk or lactose. It is a soya- based formula and this makes it appropriate to babies who cannot digest cow’s milk.

This blend is appropriate to baby’s who are sensitive to lactose and other milk-based formulas. It is popular in reducing gaseous stomach to some baby’s although it may not be ideal to all baby’s depending on the body.

For the first 12 months, Enfamil Prosobee will meet all the nutritional needs of your growing child, as it is designed with all the required nutrients like choline and DHA that are important for your baby’s cognitive development.

It is widely recommended by pediatricians and contains a blend of vitamins that enhances the development of your baby’s immune system.


  • It is Non-GMO
  • No digestion issues


  • It is expensive when compared to other formulas

9. Similac Sensitive Infant Formula

Similac Sensitive Infant Formula is a complete infant formula designed with all the amount of nutrients that are important for a baby’s healthy growth. It is designed purposefully for baby’s with sensitive tummies.

This sensitive stomach baby formula is reinforced by iron to ensure constant supply of iron for your baby’s healthy growth. 

It contains nutrients like DHA, OptiGRO and vitamins that aid in the development of your baby’s brain, eye, the immune system and the baby’s overall growth.

For babies with fussy and gaseous stomach, this formula will help in addressing the problem. It is also a great solution to babies with frequent poops or baby’s who throw up their food.

It tastes well and will not have any unwanted side effects. As a mom, you’ll love the liquid bottles that come together with the formula and you can use them on the go or in the house.

Unfortunately, this formula is not ideal for babies suffering from galactosemia. Plus, the tub is smaller when compared to other baby formulas. However, its still a great buy courtesy of its great nutritional value.


  • Great price
  • Good taste
  • Friendly to the stomach


  • Tub size is small when compared to other formulas

10. Efamil NeuroPro Gentlease Infant Formula

There are two brain nourishing formulas that make Enfamil Premium outstanding when compared to other baby formulas in our reviews- inositol and DHA. This formula come with the same amount of these two nutrients that are also contained in breast milk.

Medically, this formula is proven to reduce gaseous stomach, fussiness of babies and is comprised of digestible proteins.

Enfamil Premium is a composition of 30 different nutrients important for your baby’s optimal health. 

Plus, unlike other infant formulas, this one contains two times the amount of Omega-3 DHA. DHA is very crucial as it enhances cognitive development of your baby up to when your baby is five years.

Also, this formula comes with a blend of other important minerals and vitamins that supports the growth of your baby’s immune system for their overall health. Plus, it comes with a user easy-to-pour bottle that comes in handy when you want to nourish your baby.


  • Less expensive
  • The bottle’s shape makes pouring easy


  • It may be bitter to some users

Things to Look for in the Best Infant Formula for Sensitive Stomach

1. Digesting is Easy

Your baby’s digestive system is weak, so it’s important you look for the formula that is a blend of digestible ingredients. Otherwise, it’s going to be tough for their digestive system.

2. Presence of Essential Nutrients and Vitamins

Because it may not be possible to nurse your baby with the nutritious breast milk, the infant formula for sensitive tummies you pick should resemble or imitate the breast milk in terms of available nutrients.

Important nutrients include ARA, DHA and vitamins. They are available in breastfed milk and are vital in the growth and development of your baby’s cognitive abilities, eye, brain and immunity development, and the general body growth.

3. Little or No Lactose

You know your baby well. So, if your baby is lactose intolerant, choose a formula with little or no lactose.

Ingredients to Look in Infant Formulas for Sensitive Babies

  • HMO (Human milk oligosaccharide): leads to a health digestive and immune system
  • Hydrolyzed (comfort) proteins or soy: they are easy to break down by sensitive stomachs
  • Probiotics: promotes a healthy immune and digestive system
  • Omega 3, DHA and ARA: leads to heathy brain, eyes and other parts of the nervous system
  • If there’s cow’s milk, it should be obtained from animals not treated with rBST. There should be no genetically engineered ingredients

These ingredients are certified by prominent bodies like USDA and FDA. Further, they’re friendly to sensitive babies and do not cause the baby to be gases, colic or have any kind of sensitivity.

Symptoms of Formula Intolerance

To tell if a baby is allergic or sensitive to a particular formula consider the following symptoms.

  • Baby gets gassy, spits up or vomit after feeding
  • The baby cries excessively and gets cranky for hours. In such a case, the baby is allergic to protein-based formulas that cause the baby to have the painful stomach cramps
  • Skin rash
  • Baby diarrheas or passes watery poops than normal
  • Wheezing and trouble in breathing, runny nose, nasal congestion and other respiratory symptoms
  • Baby refuses to feed and throws around. Sometimes looking uncomfortable while feeding
  • Baby refuses or have trouble when sleeping keeping you upset after feedings

Formula intolerance happens when the formula ingredients irritate the digestive tract and the immune system. In most cases, a baby will show these signs from a few weeks to 2-months of using a particular formula. This though will depend on the sensitivity of the baby to the specific ingredients.

What Causes Constipation?

Poor choice of baby formula maybe what is causing the baby to constipate. For example, a formula rich in daily products is a red flag. Babies who are allergic or sensitive to cow’s milk should be given formulas with other ingredients like soy or hydrolyzed proteins.

On the other hand, breastfed babies have little or no chance of constipation because the available nutrients are digestible, unless you consumed something that was allergic to them. Formula fed babies are susceptible to constipation because the available nutrients are hard for them to digest.

Additionally, your baby may get constipated if:

  • You do not fix the formula correctly by sacrificing the amount of fluid
  • You scooped or mixed the formula without following instructions.

However, it could be that other issues and conditions are causing your baby to constipate. Below are some of the major reasons.

1. Dehydration

Even though your baby is breastfeeding, he/she is likely to lose a lot of water through sweat just like adults do. This may lead to constipation.

2. Introduction of Solid Foods

Introducing your baby to solid foods is another primary cause because studies indicate rare or zero chances of constipation to breast-fed babies. Your baby’s digestive system is weak for solid foods and this may lead to constipation according to studies.

To reduce the chances, incorporate fiber rich foods like vegetables, fruits or prune juice. A pediatrician may also recommend diluted juice, one ounce per day to hydrate your baby.

3. Medical issues

It’s always advisable to consult a medical expert if the condition is severe, as there are other conditions that may be making your little one to constipate.

How to Know Your Baby is Experiencing Constipation

As I have mentioned, because babies are different, you’ll need to figure out what is causing constipation before finding the best baby formula for constipation. As a mom who is new into parenting, you may not even be sure if your baby is experiencing constipation. Below are the major signs

1. Hard Poop and Discomfort When Pooping

Your baby’s poop should be soft. So, if your baby is experiencing difficulties when passing stool, this is a red flag. Sometimes the hard pop is accompanied by blood stains when the situation is severe and that should be a high time you look for the best milk formula for babies with constipation.

In other instances, you’ll find your baby crying before they poop, and this discomfort may be a sign of constipation. Other times a baby will appear to stain or red on face when passing stool.

2. Doesn’t Poop for Between 5 and 7 Days

If the baby stays for such a long period without pooping, chances are they are experiencing constipation.

3. Hard Belly

Rookie moms may be oblivious of this, but if you apply some gentle pressure on the belly and find it harder than usual, that’s a sign of constipation.

Consistency of how hard or soft the poop is depends on what you feed the baby. Typically, breastfed babies will produce lose poops while formula fed babies will have harder poops.

Note that breastfed babies may not poop quite often which is normal as the body may absorb most of breast for body processes leaving only little for excretion. So, it’s normal for breastfed babies to poop once in 7-days.

Constipation is rarely a serious health condition unless your baby constipated without cause or convey another illness together with constipation. Visit a doctor if constipation persists beyond to weeks or if it is accompanied by-;

  • Weight loss
  • Abdominal swelling
  • Fever
  • Baby refusing to eat
  • Blood traces on stool
  • Painful gesture when passing stool

Wrap Up

Similac brand is the best baby formula for sensitive stomach in our opinion. They are globally pointed out to serve well without disappointment.

Unfortunately, even the best formula for sensitive stomach may not work on every baby because of the diversity in digestive issues. Some babies will be allergic to specific components in specific formulas and others will not.

The best thing is to Identify the real cause of gas, constipation or sensitive tummy, then find the best formula for sensitive tummies that will work for your angel.