Similac vs Enfamil Comparison Guide

For a healthy full-term baby, the standard lines of Similac and Enfamil are nutritionally equivalent under federal infant formula rules, so buy whichever formula your baby already tolerates or is cheaper and in stock. At New Parent Picks, we read published manufacturer specifications, the FDA’s marketed-formula list, and owner reports.

Similac is made by Abbott, which positions its standard 360 Total Care line around five human milk oligosaccharide prebiotics. Enfamil is made by Mead Johnson & Company, LLC, a subsidiary of Reckitt, which positions its standard NeuroPro line around milk fat globule membrane and docosahexaenoic acid.

Switching between the two standard milk-based lines changes the brand. It does not upgrade the nutrition. The Food and Drug Administration puts it this way: “most babies will do just fine with different brands of formula, including store brands, as long as they’re the same type.” The two brands differ most in their specialty formulas for fussiness, gas, spit-up and cow’s milk protein allergy.

What Separates Similac vs Enfamil

Product Category	Similac	Enfamil	Verdict
Standard Milk-Based Line	Similac 360 Total Care	Enfamil NeuroPro	Both meet federal nutrient rules; choice comes down to shelf price
Gentle and Fussiness Line	Similac Pro-Total Comfort	Enfamil NeuroPro Gentlease	Both makers describe these as partially hydrolyzed; talk to your pediatrician before switching
Sensitive Line	Similac Sensitive	No reduced-lactose Enfamil line on our source list	Similac explicitly targets lactose sensitivity with this line
Hypoallergenic Line	Similac Alimentum	Nutramigen	Similac says Alimentum’s protein is broken down; Enfamil classifies Nutramigen as extensively hydrolyzed; use under your pediatrician’s direction
Spit-Up Line	Similac For Spit-Up	Enfamil A.R.	Both are made with rice starch; Enfamil says A.R.’s is designed to reduce spit-up or reflux
Parent Manufacturer	Abbott	Mead Johnson & Company, LLC (Reckitt)	Enfamil’s site names Reckitt as Mead Johnson’s parent company

Federal regulatory standards ensure that baseline nutrition remains consistent regardless of the container you buy. The Food and Drug Administration infant formula guidance puts it this way: “all formulas marketed in the United States must meet federal nutrient requirements.” The agency does not pre-approve infant formulas, but manufacturers must submit notification before marketing any new recipe.

Because basic macronutrient and micronutrient levels are federally mandated, neither brand holds a biological advantage for everyday feeding. So the everyday choice comes down to what your baby takes well and what you can buy reliably. If you are building a registry, our best formula for newborns picks cover more brands than these two.

For the bottle itself, see our best baby bottles picks.

Similac Product Lines and Maker Positioning

Abbott sells Similac in several lines. Its flagship recipe, Similac 360 Total Care, is positioned by Abbott as “our closest formula to breast milk.” Similac says 360 Total Care contains a blend of five HMO prebiotics structurally identical to five found in breast milk.

Similac describes Pro-Total Comfort as “a gentle formula that has partially hydrolyzed protein and 2’-FL HMO.” Similac says Sensitive is “specially designed for fussiness and gas due to lactose sensitivity.”

The FDA’s marketed-formula list includes several Similac formulas. These include Similac 360 Total Care Gentle Comfort and Similac Gentle Comfort in both powder and ready-to-feed preparations. The list also includes Similac Sensitive, Similac Alimentum Hypoallergenic and Similac For Spit-Up.

Similac makes two more specialty formulas. Similac says Alimentum’s milk protein is “broken down into tiny pieces to virtually eliminate allergic reactions in most babies who are allergic to cow’s milk protein.” Similac says For Spit-Up is made with rice starch and is “suitable for babies with lactose sensitivity.”

Similac’s labels describe what each formula is designed for, and none promises a calmer baby. Any transition between formula recipes should be discussed with your pediatrician before altering your baby’s daily feeds.

Enfamil Product Lines and Maker Positioning

Mead Johnson & Company, LLC, operating under parent company Reckitt, builds the Enfamil brand around neurodevelopmental messaging. Its primary milk-based product, Enfamil NeuroPro, features milk fat globule membrane and docosahexaenoic acid. Mead Johnson positions this specific combination of ingredients for infant brain development.

Enfamil NeuroPro Gentlease is positioned by Mead Johnson “for fussiness, crying, gas, spit-up and promoting softer stools,” with what Enfamil calls easy-to-digest proteins. On its technical resources, Enfamil classifies Gentlease as a partially hydrolyzed formula.

Mead Johnson also sells two specialty formulas meant for use under your pediatrician’s direction. Enfamil classifies Nutramigen as extensively hydrolyzed, for managing cow’s milk protein allergy. Enfamil says A.R. has “added rice starch designed to reduce baby’s spit-up or reflux.”

If gas or fussiness is why you are comparing, our best formula for a gassy newborn page covers the gentle formulas and the bottle changes to try first.

Similac vs Enfamil Price Differences

To see whether Similac or Enfamil is cheaper, work out the price per ounce. Divide the shelf price by the net ounces printed on the label. Compare powder with powder and ready-to-feed with ready-to-feed.

None of our sources publishes a price for either brand, so this page cannot name the cheaper one. Run the per-ounce math at the store or site where you actually buy formula.

Store brands are the other route. The FDA line quoted above covers them: most babies do fine on different brands “including store brands, as long as they’re the same type.” If you want to reduce feeding expenses, ask your pediatrician whether a standard store brand milk-based formula is appropriate for your baby.

Your weekly cost also depends on how much your baby drinks. You can consult our reference guide on how much formula does a newborn need to estimate how many cans your household will go through each week.

Who Should Pick Similac vs Enfamil

Pick Similac if:

• Your pediatrician points you to a lactose-sensitivity formula like Similac Sensitive for fussiness and gas linked to lactose sensitivity.
• You want a standard formula built with five human milk oligosaccharide prebiotics, such as Similac 360 Total Care.
• Similac costs less per ounce than Enfamil at the store where you shop.

Pick Enfamil if:

• Your pediatrician points you to a partially hydrolyzed formula marketed for fussiness, gas, and softer stools, such as Enfamil NeuroPro Gentlease.
• You want Enfamil NeuroPro, which Mead Johnson positions for brain development with MFGM and DHA.
• Your pediatrician points you to Enfamil A.R., which Enfamil says has “added rice starch designed to reduce baby’s spit-up or reflux.”

Skip both standard lines if your baby has a diagnosed cow’s milk protein allergy. For that allergy, Similac sells Alimentum and Enfamil classifies Nutramigen as extensively hydrolyzed, and the choice between them belongs with your pediatrician. If an organic formula is your priority, see our organic baby formula picks or our Bobbie vs Kendamil comparison.

What Would Change This Answer

Our verdict on formula parity would shift if federal regulatory authorities altered standard nutrient requirements or if either manufacturer modified its baseline recipes.

A sustained supply disruption affecting one manufacturer would also alter this advice. If regional shortages make Similac or Enfamil difficult to locate, the practical choice is immediately whichever formula on the FDA’s marketed-formula list is on your store’s shelf. Keeping your baby fed matters more than the brand.

Your pediatrician can also change the answer for your baby. The American Academy of Pediatrics HealthyChildren symptom checker puts it this way: “Switching from one milk-based formula to another is not helpful for any symptom. It is also not harmful.” Any symptom that worries you belongs with your baby’s pediatrician.

Frequently Asked Questions

What is the healthiest baby formula brand?

No single commercial formula brand is objectively healthier than another under federal law. Every infant formula sold in the United States must meet strict federal nutrient requirements established by regulatory authorities. Both Similac and Enfamil sell standard formulas that meet those requirements. The healthiest choice for your household is the standard formula that your baby drinks comfortably, that fits your family budget, and that remains reliably in stock at your local stores.

Why do hospitals hand out Similac?

Hospitals and pediatrician offices tend to stock whichever formula brand supplied them. A hospital handing out Similac reflects its supply. It is not a medical endorsement of that formula. If your baby starts on Similac in the hospital and does well on it, you can keep using it at home. Switching to another standard milk-based formula is also an option to discuss with your pediatrician.

Why do hospitals hand out Enfamil?

Hospitals and pediatrician offices tend to stock whichever formula brand supplied them. A hospital handing out Enfamil reflects its supply. It is not a medical endorsement of Enfamil over other brands. If your baby takes Enfamil well after birth, you can keep using it at home or ask your pediatrician about other standard formulas at the first checkup.

Is it okay to switch from Enfamil to Similac?

Switching from Enfamil to Similac is a brand change between two formulas of the same type. The FDA’s parent page keeps that point: most babies do fine on different brands of the same type, with any substitution supervised by the pediatrician. However, the American Academy of Pediatrics puts it this way: “switching formulas for frequent crying, spitting up or gas is rarely helpful.” If you plan to switch brands to address gastrointestinal discomfort, consult your pediatrician before changing what goes into your baby’s bottle.

Is Similac or Enfamil easier to digest?

Our sources show no digestion difference between the two standard lines. Enfamil says Gentlease has “easy-to-digest proteins,” and both Enfamil NeuroPro Gentlease and Similac Pro-Total Comfort are described by their makers as partially hydrolyzed. The AAP puts it this way: “Switching formulas for frequent crying, spitting up or gas is rarely helpful.” Talk to your pediatrician before you switch for digestion reasons.

Is Enfamil better than Similac?

Enfamil is not inherently better than Similac, as both brands manufacture formulas that fulfill identical federal nutritional mandates. Enfamil emphasizes neurodevelopmental ingredients such as milk fat globule membrane and docosahexaenoic acid, while Similac focuses marketing on its five human milk oligosaccharide prebiotics. Neither recipe has been established as superior for standard infant development. The better formula is whichever brand your child accepts without difficulty and your family can purchase consistently without financial strain.

Before making any change to your baby’s diet, consult your pediatrician, and verify current pricing and ingredient lists directly on Similac’s website and Enfamil’s website.

Sources

1. Similac's website (similac.com)
2. Enfamil's website (enfamil.com)
3. FDA's marketed-formula list (fda.gov)
4. Food and Drug Administration (fda.gov)
5. Similac 360 Total Care (similac.com)
6. Enfamil NeuroPro (enfamil.com)
7. Similac Pro-Total Comfort (similac.com)
8. Enfamil NeuroPro Gentlease (enfamil.com)
9. Similac Sensitive (similac.com)
10. Similac Alimentum (similac.com)
11. Nutramigen (enfamil.com)
12. Similac For Spit-Up (similac.com)
13. Enfamil A.R. (enfamil.com)
14. Food and Drug Administration infant formula guidance (fda.gov)
15. American Academy of Pediatrics HealthyChildren symptom checker (healthychildren.org)