Best Baby Formula for Colic (2026): What Actually Works
Exhausted from endless crying? The right formula can help—here's what pediatricians and parents who've been through it recommend.
🎯 Quick Answer
Similac Alimentum and Enfamil Nutramigen are the gold standard for colic—hypoallergenic formulas that reduce crying in most babies within 48 hours. For milder colic, try Enfamil Gentlease or Similac Total Comfort (partially hydrolyzed proteins).
📋 Key Takeaways
- Similac Alimentum and Enfamil Nutramigen are gold standard for severe colic (hypoallergenic—reduce crying in most babies within 48 hours)
- For milder colic: Enfamil Gentlease or Similac Total Comfort (partially hydrolyzed proteins)
- Colic follows Rule of 3s: 3+ hours crying, 3+ days/week, 3+ weeks; usually resolves by 3-4 months
- Up to 30% of colic may be linked to cow's milk protein allergy—hypoallergenic formula can help
- Beyond formula: white noise, swaddling, rocking, and anti-colic bottles also reduce crying
- See your pediatrician if crying persists after trying 2 formulas, or if blood in stool, poor weight gain, or rash appear
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🛒 Where to Buy: Best Prices
Similac Alimentum Infant Formula
- Hypoallergenic
- Works in 48 hours
- No palm oil
- Expensive
- Strong smell/taste
Enfamil Nutramigen Hypoallergenic
- LGG probiotic
- 48-hour relief claim
- Clinically proven
- Expensive
- Distinct smell
Enfamil NeuroPro Gentlease
- 24-hour relief claim
- Partially hydrolyzed
- MFGM + DHA
- Contains palm oil
- Some lactose
Similac Pro-Total Comfort
- 100% hydrolyzed whey
- 2'-FL HMO
- No palm oil
- Some babies dislike taste
- Higher price
📊 Colic Formula Comparison Table
| Formula | Protein Type | Lactose | Palm Oil | Probiotic | Price | Best For |
|---|---|---|---|---|---|---|
| Similac Alimentum | Extensively hydrolyzed | Lactose-free | No | No | ~$49 | Severe colic, CMPA |
| Enfamil Nutramigen | Extensively hydrolyzed | Lactose-free | Yes | LGG | ~$48 | Severe colic, CMPA |
| Enfamil Gentlease | Partially hydrolyzed | 80% less | Yes | No | ~$37 | Mild colic, fussiness |
| Similac Pro-Total Comfort | Partially hydrolyzed | Reduced | No | No | ~$32 | Mild colic, sensitive tummies |
| Kendamil Goat | Goat milk | Yes | No | No | ~$45 | Cow milk sensitivity (not CMPA) |
| Gerber Good Start SoothePro | 100% whey (comfort) | Reduced | Yes | L. reuteri | ~$28 | Colic, crying (probiotic) |
😭 Understanding Colic: The Rule of 3s
Colic is one of those words that sounds simple until you're living it. Doctors define it as crying for at least 3 hours a day, 3+ days a week, for 3+ weeks—in an otherwise healthy baby. It usually starts around 2 weeks, peaks at 6 weeks, and typically resolves by 3-4 months.
Nobody knows exactly why some babies get colic and others don't. Immature digestive systems, gas, temperament, and sometimes cow's milk protein allergy (CMPA) can all play a role. What we do know: formula can help when the cause is digestive.
Parent reality check: Colic is exhausting and isolating. You're not doing anything wrong. And yes—switching formula can make a real difference for many babies. It's worth trying.
🏥 Hypoallergenic Formulas for Severe Colic
When colic is linked to cow's milk protein allergy, standard formula won't cut it. Similac Alimentum and Enfamil Nutramigen use extensively hydrolyzed proteins—broken down so small they don't trigger allergic reactions. Both are lactose-free.
Similac Alimentum
Alimentum has no palm oil (can mean less constipation for some babies) and no probiotics. Parents report improvement within 48 hours when CMPA is the cause. The taste and smell are strong—many babies need a day or two to accept it.
Enfamil Nutramigen
Nutramigen contains the LGG probiotic, which may help babies build tolerance to milk over time. It's clinically proven to reduce colic due to CMPA in 48 hours. Also has a distinct smell; most babies adjust quickly when they're hungry.
Important: Hypoallergenic formula is expensive ($45-55/can). If your pediatrician suspects CMPA, they may recommend a trial—improvement in 48-72 hours supports the diagnosis. WIC and some insurance plans cover it with documentation.
🍼 Gentle Formulas for Mild Colic
Not every colicky baby has a milk allergy. For milder colic—fussiness, gas, evening crying—partially hydrolyzed formulas are often enough. These break down proteins for easier digestion without going full hypoallergenic.
- Enfamil Gentlease: 80% less lactose, partially hydrolyzed proteins. Claims to reduce fussiness within 24 hours. Widely recommended by pediatricians for gas and colic.
- Similac Pro-Total Comfort: 100% partially hydrolyzed whey, 2'-FL HMO, no palm oil. Gentler option that works for many sensitive babies.
- Gerber Good Start SoothePro: Comfort proteins plus L. reuteri probiotic. Some studies show probiotics reduce colic crying. Budget-friendly.
🔗 The CMPA Connection
Up to 30% of colic may be linked to cow's milk protein allergy. Signs that point to CMPA: blood or mucus in stool, severe eczema, vomiting, poor weight gain, or colic that doesn't improve with soothing. In those cases, hypoallergenic formula isn't optional—it's the fix.
If your baby "just" cries a lot with no allergy signs, start with gentle formulas for gassy babies. If no improvement in 2 weeks, talk to your pediatrician about trying hypoallergenic.
🤱 Beyond Formula: Soothing Techniques
Formula changes aren't the only tool. Many colicky babies calm with:
- White noise: Shushing, vacuum, or dedicated sound machine
- Movement: Rocking, baby-wearing, car rides, or a swing
- Swaddling: Snug wrap can reduce startle and overstimulation
- Anti-colic bottles: Reduce air swallowing—see our gassy baby guide for bottle tips
- Frequent burping: Every 1-2 oz during feeds
Combine formula changes with these techniques. Sometimes the combo is what finally brings relief.
⚠️ When to See Your Pediatrician
Colic is usually benign, but some symptoms need immediate attention. See your doctor if:
- Blood or mucus in stool
- Poor weight gain or feeding refusal
- Severe rash, hives, or swelling
- Fever, lethargy, or dehydration signs
- No improvement after trying 2 different formulas for 2 weeks each
🏆 Final Verdict
Our Recommendation:
- Severe colic / suspected CMPA: Similac Alimentum or Enfamil Nutramigen (try one; switch if no improvement in 48-72 hours)
- Mild colic / fussiness: Enfamil Gentlease or Similac Pro-Total Comfort
- Colic + probiotic preference: Gerber Good Start SoothePro or Nutramigen
Bottom line: Hypoallergenic formulas are the gold standard when CMPA is driving colic. For everything else, start with gentle formulas and give them 1-2 weeks. And remember—colic usually goes away on its own by 3-4 months. You'll get through this.
📚 Related Formula Guides
❓ Frequently Asked Questions
What is colic in babies?
Colic is defined as unexplained crying in an otherwise healthy baby for at least 3 hours a day, 3+ days a week, for 3+ weeks (the 'Rule of 3s'). It typically starts around 2 weeks, peaks at 6 weeks, and usually resolves by 3-4 months.
Can formula cause colic?
Yes. Some babies develop colic due to difficulty digesting milk protein or lactose in standard formula. Switching to hypoallergenic formula (Similac Alimentum, Enfamil Nutramigen) or gentle formula (Enfamil Gentlease, Similac Total Comfort) can reduce crying in many colicky babies.
How quickly does switching formula help colic?
Hypoallergenic formulas like Alimentum and Nutramigen often show improvement within 48 hours. Gentler options like Gentlease typically take 3-5 days. Give any new formula at least 1-2 weeks before deciding it doesn't work.
Is hypoallergenic formula necessary for colic?
Not always. Hypoallergenic formula is for colic linked to cow's milk protein allergy (CMPA). For milder colic without allergy signs, try Enfamil Gentlease or Similac Total Comfort first. If no improvement in 2 weeks, your pediatrician may recommend hypoallergenic formula.
What is the difference between colic and milk allergy?
Colic is prolonged crying without a clear cause. Milk allergy (CMPA) has specific symptoms: bloody or mucousy stools, severe eczema, vomiting, poor weight gain, or diarrhea. Colic from CMPA improves on hypoallergenic formula within 48 hours. Non-allergy colic may not.
When does colic go away?
Colic typically resolves on its own by 3-4 months, regardless of cause. About 90% of colicky babies are over it by 4 months. Until then, formula changes and soothing techniques (white noise, swaddling, movement) can help.
Is Alimentum or Nutramigen better for colic?
Both are equally effective for colic caused by cow's milk protein allergy. Nutramigen contains LGG probiotic; Alimentum has no palm oil. Try one—if baby doesn't improve in 48-72 hours or refuses it, switch to the other. Pediatrician guidance is recommended.
TeachToddler Editorial Team
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