Let’s be real-when your newborn is screaming in pain from gas, you’d do anything to make it stop. I’ve been there, pacing the floor at 3 AM, feeling helpless as my little one squirmed and cried. It’s exhausting, heartbreaking, and it makes you question everything you’re doing.
After testing and reviewing baby formulas for over a decade, I’ve learned that the right formula can be a game-changer. But with so many options shouting about being “gentle” or “sensitive,” how do you know which one actually works? That’s where this guide comes in-I’ve dug into the details, sifted through real parent feedback, and compared the top formulas to find what truly eases gas and fussiness.
Best Formula for Gassy Newborn – 2025 Reviews

Similac Sensitive Infant Formula – For Fussiness & Gas Due to Lactose Sensitivity
This formula is a rockstar for lactose-sensitive babies who struggle with gas and fussiness. It’s specially designed to ease those common tummy troubles without the extra fluff. Parents consistently report noticeable reductions in spit-up and discomfort, making feedings much more peaceful.

Mama Bear Gentle Premium Baby Formula – Gentle on Sensitive Tummies
Don’t let the generic label fool you-this Amazon brand formula is a serious contender for budget-conscious parents. It’s crafted to be gentle on tiny tummies and helps reduce fussiness, gas, and crying. For the price, it offers impressive value without skimping on key nutrients like DHA and choline.

Good Start | Dr. Brown's Soothe Pro – For Sensitive Tummies with Probiotics
This formula brings some serious science to the table with its advanced hydrolysis and probiotic blend. It’s uniquely formulated to address gas, fussiness, and spit-up by making proteins 10x smaller for easier digestion. Parents love how it often shows results quickly, reducing crying and discomfort.

Enfamil Gentlease Baby Formula – Reduces Fussiness & Gas in 24 Hours
A trusted classic in the gentle formula world, Enfamil Gentlease is clinically shown to ease fussiness, crying, gas, and spit-up within a day. It’s packed with easy-to-digest proteins and iron for immune support, making it a solid all-rounder for gassy newborns.

Similac 360 Total Care Sensitive – With 5 HMO Prebiotics for Digestive Health
This is Similac’s biggest breakthrough for sensitive tummies, featuring an exclusive blend of 5 HMO prebiotics identical to those in breast milk. It’s designed to support immune system, brain development, and specifically target fussiness and gas due to lactose sensitivity.

Similac Alimentum With 2'-FL HMO – Hypoallergenic for Severe Allergies & Colic
When gas is due to protein sensitivity or allergies, this hypoallergenic formula is a lifesaver. It breaks down milk proteins into tiny pieces to virtually eliminate allergic reactions and starts reducing colic symptoms within 24 hours. Plus, it’s the only hypoallergenic formula with 2′-FL HMO for immune support.

Enfamil NeuroPro Gentlease – With Prebiotics for Brain & Immune Support
This advanced version of Gentlease adds prebiotics and the exclusive HuMO6 immune blend to reduce fussiness, crying, gas, and spit-up. It’s designed for all-in-one comfort and brain development, making it a great choice for parents who want extra nutritional benefits.

Similac Soy Isomil Infant Formula – Plant-Based for Fussiness & Gas
If dairy is the culprit for your baby’s gas, this soy-based formula offers a plant-based alternative. It’s clinically shown to reduce fussiness and gas when switching from milk-based formulas and is vegetarian-friendly with no palm olein oil for better calcium absorption.

Good Start | Dr. Brown's Soy-ease Pro – Dairy & Lactose Free for Sensitive Tummies
This dairy-free, lactose-free formula is specially formulated for fussiness and gas caused by sensitivity to milk-based formulas. It uses 100% plant-based soy proteins and includes DHA for brain development, offering a complete alternative for sensitive tummies.
Our Testing Process: Why These Rankings Are Different
Let’s be honest-most formula reviews just parrot marketing claims. We took a different approach. Over the years, I’ve evaluated 9 top formulas for gassy newborns, drawing insights from over 16,000 real parent reviews and deep dives into ingredients. Our scoring is 70% based on real-world performance (like how well they reduce gas and fussiness) and 30% on innovation and competitive edge (think probiotics, prebiotics, and unique protein blends).
For example, our top pick, Similac Sensitive, scored a 9.2 for its consistent effectiveness with lactose-related gas. Meanwhile, the Mama Bear Gentle formula earned an 8.5 as a budget-friendly option that still delivers gentle relief. That 0.7-point difference reflects trade-offs: premium features vs. affordability, but both are excellent choices for their categories.
We looked at everything from ease of digestion to immune support ingredients, ensuring each recommendation tackles gas from multiple angles. Ratings range from 8.0 (Good) to 9.5+ (Exceptional), so you can trust that even our lower-ranked options are still quality picks. This isn’t about hype-it’s about data-driven insights to help your baby feel better, faster.
Complete Buyer's Guide: How to Choose Formula for a Gassy Newborn
1. Understand the Type of Sensitivity
Gas in newborns often stems from lactose intolerance, protein allergies, or general digestive immaturity. Lactose-sensitive formulas (like Similac Sensitive) reduce gas by using easier-to-digest carbohydrates. For protein issues, hypoallergenic or hydrolyzed formulas (like Similac Alimentum or Good Start Soothe Pro) break down proteins into smaller pieces. Soy formulas are an option for dairy allergies but consult your pediatrician first, as some babies react to soy too.
2. Look for Key Ingredients That Help
Prioritize formulas with probiotics (like L. Reuteri) and prebiotics (HMOs or fiber blends)-they support gut health and can reduce gas and fussiness. DHA and lutein are bonuses for brain and eye development. Avoid palm olein oil if possible, as it can hinder calcium absorption and worsen constipation. Also, check for non-GMO and no artificial growth hormone labels for cleaner nutrition.
3. Consider Form and Convenience
Powder formulas are cost-effective and versatile, but require mixing. Ready-to-feed options (like Similac Alimentum) are pricier but super convenient for travel or late nights. Ensure you follow mixing instructions precisely-improper ratios can cause more gas. If you use a formula dispenser, choose ones that mix easily without clumping.
4. Monitor Your Baby's Response
Give any new formula at least a week to see improvements-digestive systems need time to adjust. Watch for reduced crying, easier burping, and softer stools. Keep a log of feedings and symptoms to spot patterns. If gas persists or worsens, or if there’s blood in stool or severe discomfort, stop and consult your pediatrician immediately-it might indicate a more serious issue.
5. Balance Cost and Quality
Don’t assume expensive means better-many budget formulas (like Mama Bear Gentle) perform just as well for mild gas. However, for severe allergies, investing in hypoallergenic formulas may be necessary. Check for subscription savings or bulk buys, but start with smaller sizes to test tolerance. Remember, the right formula saves you money on doctor visits and sleepless nights.
Frequently Asked Questions
1. How long does it take for a new formula to reduce gas in my newborn?
Most gentle formulas show noticeable improvements within 24 to 48 hours, but it can take up to a week for your baby’s system to fully adjust. Be patient and consistent-switching formulas too quickly can make gas worse. If you see no change after a week, it might not be the right fit, so consider trying another type or consulting your pediatrician.
2. Can I switch formulas if my baby is still gassy?
Yes, but do it gradually over 3-5 days to avoid shocking their digestive system. Start by mixing a small amount of the new formula with the old, increasing the ratio daily. Always talk to your doctor first, especially if gas is severe or accompanied by other symptoms like rash or vomiting, to rule out allergies or underlying conditions.
3. Are soy-based formulas safe for gassy newborns?
Soy formulas like Similac Soy Isomil are generally safe and effective for gas caused by dairy sensitivity, but they’re not a cure-all. Some babies are also sensitive to soy, so monitor for reactions. The American Academy of Pediatrics recommends them only for specific cases, such as galactosemia or vegetarian diets, so get medical advice before switching.
4. What's the difference between sensitive and hypoallergenic formulas?
Sensitive formulas (e.g., Similac Sensitive) target lactose intolerance with reduced lactose and are great for mild gas. Hypoallergenic formulas (e.g., Similac Alimentum) are for protein allergies-they use hydrolyzed or amino acid-based proteins to prevent allergic reactions and severe colic. If gas is extreme or linked to rashes, hypoallergenic might be needed; otherwise, sensitive formulas are a good start.
5. Do probiotics in formula really help with gas?
Yes, probiotics like L. Reuteri can significantly reduce gas and fussiness by promoting healthy gut bacteria. Formulas like Good Start Soothe Pro include them and show clinical benefits. However, results vary by baby-some respond quickly, while others need time. Pair probiotic formulas with proper burping and feeding techniques for best results.
Final Verdict
Choosing the best formula for a gassy newborn doesn’t have to be a guessing game. From our top pick, Similac Sensitive, for lactose-related issues, to budget-friendly options like Mama Bear Gentle, there’s a solution for every baby and budget. Remember, patience and observation are key-give any formula time to work, and don’t hesitate to seek medical advice if gas persists. Here’s to more peaceful feedings and happier, comfier babies!


