Enfamil Sensitive vs Similac Sensitive: Which Lactose-Free Formula Is Better? (2026)
Both formulas claim to help lactose-sensitive babies — but they work differently. Here's the honest comparison.
Quick Answer
Similac Sensitive is completely lactose-free and has no palm oil (less constipation). Enfamil Sensitive has trace lactose but higher DHA for brain development. Choose Similac for true lactose intolerance or constipation concerns. Choose Enfamil for better DHA content.
Key Takeaways
- Both target lactose sensitivity, but Similac Sensitive is fully lactose-FREE while Enfamil Sensitive has trace lactose
- Similac Sensitive: no palm oil = softer stools, better calcium absorption
- Enfamil Sensitive: higher DHA levels for brain development
- Winner for constipation: Similac Sensitive (no palm oil)
- Winner for DHA: Enfamil Sensitive
- Both are ~$0.15-0.18/oz prepared — similar pricing
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Enfamil Sensitive
Reduced Lactose
Higher DHA
Similac Sensitive
Lactose-FREE
No Palm Oil
Where to Buy: Best Prices
Enfamil Sensitive Infant Formula
- Higher DHA levels
- Trusted brand
- Good taste acceptance
- Contains palm olein oil
- Trace lactose remains
Similac Sensitive Infant Formula
- 100% lactose-free
- No palm oil
- Less constipation
- Uses corn syrup solids
- Lower DHA
Head-to-Head Comparison Chart
| Feature | Enfamil Sensitive | Similac Sensitive | Winner |
|---|---|---|---|
| Lactose Content | Trace amount remains | 100% lactose-free | Similac |
| Palm Oil | Contains palm olein | No palm oil | Similac |
| DHA Level | Higher DHA per serving | Standard DHA | Enfamil |
| Constipation Risk | Higher (palm oil) | Lower (no palm oil) | Similac |
| Calcium Absorption | Standard | Better (no palm oil) | Similac |
| Carb Source | Corn syrup solids | Corn syrup solids | Tie |
| Price per oz | ~$0.16/oz prepared | ~$0.15/oz prepared | Similac |
| Protein Source | Milk protein concentrate | Milk protein isolate | Tie |
The Lactose Difference Explained
Similac Sensitive: Zero Lactose
Similac Sensitive removes all lactose and replaces it with corn syrup solids as the carbohydrate source. This makes it the go-to choice for babies with confirmed lactose intolerance or severe lactose sensitivity.
Enfamil Sensitive: Reduced Lactose
Enfamil Sensitive significantly reduces lactose but retains a small amount. The idea is that most babies with lactose sensitivity can still handle a little lactose, and maintaining some helps with flavor and nutrient absorption. However, for babies who react to any lactose, this may not be enough.
Which Should You Choose?
- Confirmed lactose intolerance: Similac Sensitive (zero lactose)
- Mild sensitivity with gas: Either formula works; try Enfamil for higher DHA
- Constipation on current formula: Similac Sensitive (no palm oil)
- Brain development priority: Enfamil Sensitive (more DHA)
Palm Oil: Why It Matters
Enfamil Sensitive contains palm olein oil. Studies show palm oil in infant formula can form insoluble calcium soaps in the gut, leading to firmer stools and reduced calcium absorption.
Similac Sensitive uses a palm-oil-free fat blend (high oleic safflower oil, soy oil, and coconut oil). This leads to softer stools similar to breastfed babies and better calcium and fat absorption.
If your baby is constipated on Enfamil Sensitive, palm oil may be the culprit. Switching to Similac Sensitive often resolves constipation within a few days.
DHA and Brain Development
Enfamil Sensitive provides more DHA per serving than Similac Sensitive. DHA (docosahexaenoic acid) is an omega-3 fatty acid critical for brain and eye development in the first year of life.
If your baby tolerates both formulas equally well, Enfamil Sensitive's DHA advantage may make it the better choice for cognitive development. However, both formulas meet AAP nutritional standards.
What Parents Say
Enfamil Sensitive Reviews:
- + "Gas improved within days of switching"
- + "Baby accepted the taste right away"
- + "Love the higher DHA for brain development"
- - "Caused constipation for my baby" (palm oil)
Similac Sensitive Reviews:
- + "Finally no more constipation!"
- + "Completely resolved lactose issues"
- + "Softer stools — much happier baby"
- - "Corn syrup solids as first ingredient concerns me"
Final Verdict
- Best for true lactose intolerance: Similac Sensitive (zero lactose)
- Best for constipation: Similac Sensitive (no palm oil)
- Best for DHA/brain development: Enfamil Sensitive
- Best overall value: Similac Sensitive (slightly cheaper, more benefits)
Bottom line: For most lactose-sensitive babies, Similac Sensitive edges out Enfamil Sensitive thanks to being fully lactose-free with no palm oil. Choose Enfamil Sensitive if DHA content is your top priority and your baby isn't constipated.
More Formula Comparisons
Frequently Asked Questions
Is Enfamil Sensitive the same as Similac Sensitive?
No. Both are designed for lactose sensitivity, but they differ in protein source and additives. Enfamil Sensitive uses milk protein concentrate and still contains a small amount of lactose, while Similac Sensitive uses milk protein isolate and is completely lactose-free. Similac Sensitive also avoids palm oil.
Which is better for lactose intolerance: Enfamil Sensitive or Similac Sensitive?
Similac Sensitive is better for true lactose intolerance because it is completely lactose-free. Enfamil Sensitive still contains a trace amount of lactose. If your baby has confirmed lactose intolerance, Similac Sensitive is the safer choice.
Does Enfamil Sensitive cause more constipation than Similac Sensitive?
Enfamil Sensitive contains palm olein oil, which can form insoluble calcium soaps in the gut and lead to firmer stools. Similac Sensitive uses a no-palm-oil fat blend (high oleic safflower, soy, and coconut oils), which is associated with softer stools and better calcium absorption.
Can I switch between Enfamil Sensitive and Similac Sensitive?
Yes. Both formulas are designed for lactose sensitivity and have similar overall nutrition. Transition gradually over 5-7 days by mixing increasing ratios of new formula with old. Watch for changes in stool, gas, or fussiness.
Which sensitive formula has better DHA levels?
Enfamil Sensitive typically provides more DHA per serving than Similac Sensitive. DHA supports brain and eye development. If DHA content is a priority, Enfamil Sensitive has an edge.
Are Enfamil Sensitive and Similac Sensitive safe for newborns?
Yes. Both are FDA-regulated, iron-fortified infant formulas suitable from birth. However, true lactose intolerance in newborns is rare. Consult your pediatrician before switching to a sensitive formula.
Which sensitive formula is cheaper?
Prices vary by retailer, but both cost approximately $0.15-0.18 per prepared ounce. Similac Sensitive is often slightly cheaper at Walmart and Target. Both brands offer Subscribe & Save discounts on Amazon.
TeachToddler Editorial Team
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