Formula Comparison

ByHeart Formula vs Gerber Good Start GentlePro (2026): Which Formula Is Better?

Premium intact protein vs. proven comfort protein — comparing ByHeart's breast milk-inspired whole milk formula against Gerber GentlePro's partially hydrolyzed whey with probiotics and HMO.

By TeachToddler Editorial Team · Updated April 11, 2026 · Formula Comparison

🍼 ByHeart Formula Overview

ByHeart is a premium US-made infant formula priced at approximately $36 for a 24 oz can. It takes a "start from scratch" approach to formula design, using breast milk research to inform every ingredient decision.

Protein: Whole milk protein with minimal heat processing — preserves the native protein structure found in fresh milk, which ByHeart says makes it gentler than conventionally processed proteins
Carbohydrate: Organic lactose only — no corn syrup solids, maltodextrin, or other added sugars
Fat blend: Proprietary breast milk-inspired fat blend structured to mimic sn-2 palmitate, improving fat and calcium absorption
DHA: From algal oil (plant-based) for brain and eye development
Prebiotics: 2'-FL HMO for gut health and immune function
No probiotics included
Single stage: 0–12 months
FDA-regulated, made in the USA

👶 Gerber Good Start GentlePro Overview

Gerber Good Start GentlePro is a mainstream US formula at approximately $28 for a 20 oz container. It is Gerber's flagship "gentle" formula, specifically designed for babies who experience fussiness, gas, or mild digestive discomfort on standard formula. It is one of the most recommended formulas by US pediatricians.

Protein: 100% partially hydrolyzed whey protein — the protein is enzymatically broken into smaller peptides that are easier for immature digestive systems to process
Carbohydrate: Blend of lactose and corn maltodextrin
Fat blend: Standard vegetable oil blend including palm olein, soy oil, coconut oil, and high oleic safflower oil
DHA/ARA: Included from standard sources for brain development
Probiotic: L. reuteri — a well-studied probiotic strain shown in clinical trials to reduce crying time in colicky infants and support digestive comfort
HMO: Contains 2'-FL HMO (human milk oligosaccharide), same as ByHeart
Widely available at every US pharmacy, grocery store, and online retailer

The Core Trade-off: ByHeart offers a cleaner ingredient list with organic lactose, intact whole milk protein, and a superior fat blend — but at a premium price and without probiotics. Gerber GentlePro is designed specifically for digestive comfort with hydrolyzed protein and proven probiotic L. reuteri — at a lower price point but with corn maltodextrin in the carbohydrate blend. One is a premium "best ingredients" formula; the other is a targeted "comfort and digestion" formula.

⚖️ Detailed Ingredient Comparison

These two formulas take fundamentally different approaches to infant nutrition. Understanding what each ingredient choice means helps you match the right formula to your baby.

Protein approach — the biggest difference: ByHeart keeps whole milk protein intact with minimal processing, arguing that preserving protein structure is gentler. Gerber GentlePro partially hydrolyzes (breaks down) whey protein, making individual protein fragments smaller and easier to digest. For healthy babies with no sensitivities, ByHeart's intact protein is fine. For fussy or gassy babies, GentlePro's hydrolyzed protein provides immediate digestive relief because baby's system does less work breaking it down.
Carbohydrate quality: ByHeart uses only organic lactose — the gold standard for infant formula carbohydrates. GentlePro uses a blend of lactose and corn maltodextrin. Maltodextrin is a processed carbohydrate that provides energy but spikes blood sugar faster than lactose. This is ByHeart's clearest ingredient advantage.
Fat blend: ByHeart's breast milk-inspired sn-2 palmitate fat blend is specifically structured for optimal absorption and softer stools. GentlePro uses a conventional vegetable oil blend including palm olein, which some studies link to harder stools and reduced calcium absorption. ByHeart has a meaningful advantage here.
Probiotic support: GentlePro includes L. reuteri, which has strong clinical evidence for reducing infant colic and crying. Multiple randomized controlled trials show L. reuteri significantly decreases crying time in colicky breastfed infants, and it is now being studied in formula-fed infants with promising results. ByHeart does not include any probiotics. This is GentlePro's clearest advantage.
Prebiotics: Both formulas include 2'-FL HMO, making this category a draw. Both support gut health and immune function through the same prebiotic mechanism.
DHA source: ByHeart uses algal oil (vegan, no fish taste). GentlePro uses standard DHA sources. Both provide adequate DHA for brain development.

💰 Price, Availability, and Practical Factors

The price and availability gap between these two formulas is significant and can be a deciding factor for many families.

ByHeart: ~$36 per 24 oz (~$1.50/oz). Available at byheart.com, Amazon, and Target. Subscription discounts available.
Gerber GentlePro: ~$28 per 20 oz (~$1.40/oz). Available at essentially every US retailer — Walmart, Target, CVS, Walgreens, Amazon, grocery stores. Often available with manufacturer coupons, store sales, and WIC coverage in most states.
Annual cost difference: ByHeart ~$1,800–$2,200/year | GentlePro ~$1,500–$1,800/year. The difference of $300–$600 per year is meaningful for many families, especially when you factor in GentlePro's frequent sales and coupon availability.
Emergency access: If you run out of GentlePro at 2 AM, you can find it at any 24-hour pharmacy or Walmart. ByHeart requires online ordering or a trip to Target. For peace of mind, GentlePro's ubiquity is a real advantage.
WIC coverage: Gerber GentlePro is covered by WIC in most states. ByHeart is not WIC-eligible. This is a critical factor for eligible families.
Pediatrician familiarity: Nearly every US pediatrician knows GentlePro and can advise on it. ByHeart is newer and less well-known in clinical settings, though it is gaining recognition.

🏆 Which Formula Should You Choose?

This comparison is less about "which is better" and more about "which is right for your specific baby." These formulas serve different needs.

Choose ByHeart if: Your baby is healthy with no digestive issues, you want the cleanest possible ingredient list (organic lactose only, no maltodextrin), you value a breast milk-inspired fat blend for optimal nutrition and softer stools, you are willing to pay a premium for ingredient quality, and your baby does not need hydrolyzed protein.
Choose Gerber GentlePro if: Your baby is fussy, gassy, or colicky on standard formula — GentlePro's partially hydrolyzed protein and L. reuteri probiotic are specifically designed for these issues. Also choose GentlePro if budget matters (it is $8+ cheaper per container), you want maximum availability (every store carries it), you need WIC coverage, or your pediatrician recommends a gentle formula.
For fussy babies — try GentlePro first: If your baby has digestive discomfort, GentlePro is the more targeted solution at a lower price. Its hydrolyzed protein and clinically studied probiotic directly address fussiness and gas. If GentlePro resolves the issues, there may be no reason to pay more for ByHeart.
For healthy babies wanting premium: If your baby is thriving and you want the most nutritionally optimized formula available, ByHeart's intact protein, organic lactose, and engineered fat blend represent the premium choice. You are paying for ingredient purity and advanced nutritional science.

Practical Recommendation: If you are a first-time parent and unsure where to start, Gerber GentlePro is a safe, affordable, widely available option that works well for most babies — including those with mild digestive sensitivity. If you want to start premium and your baby has no digestive concerns, ByHeart is an excellent choice. You can always switch if needed.

📋 Quick Comparison Summary

Price: ByHeart ~$36/24 oz | GentlePro ~$28/20 oz
Protein: ByHeart intact whole milk (minimally processed) | GentlePro partially hydrolyzed whey (broken down)
Carbs: ByHeart organic lactose only | GentlePro lactose + corn maltodextrin
Fat: ByHeart breast milk-inspired blend (no palm oil) | GentlePro standard vegetable oils (includes palm olein)
Probiotics: ByHeart — none | GentlePro — L. reuteri (clinically proven for colic)
Prebiotics: Both include 2'-FL HMO
DHA: ByHeart algal oil | GentlePro standard sources
Availability: ByHeart online + select stores | GentlePro everywhere
WIC eligible: ByHeart no | GentlePro yes (most states)
Best for: ByHeart = healthy babies, premium ingredients | GentlePro = fussy/gassy babies, budget-conscious families

🍼 ByHeart Formula Overview

Protein: Whole milk protein with minimal heat processing — preserves the native protein structure found in fresh milk, which ByHeart says makes it gentler than conventionally processed proteins

Carbohydrate: Organic lactose only — no corn syrup solids, maltodextrin, or other added sugars

Fat blend: Proprietary breast milk-inspired fat blend structured to mimic sn-2 palmitate, improving fat and calcium absorption

DHA: From algal oil (plant-based) for brain and eye development

Prebiotics: 2'-FL HMO for gut health and immune function

No probiotics included

Single stage: 0–12 months

FDA-regulated, made in the USA

👶 Gerber Good Start GentlePro Overview

Protein: 100% partially hydrolyzed whey protein — the protein is enzymatically broken into smaller peptides that are easier for immature digestive systems to process

Carbohydrate: Blend of lactose and corn maltodextrin

Fat blend: Standard vegetable oil blend including palm olein, soy oil, coconut oil, and high oleic safflower oil

DHA/ARA: Included from standard sources for brain development

Probiotic: L. reuteri — a well-studied probiotic strain shown in clinical trials to reduce crying time in colicky infants and support digestive comfort

HMO: Contains 2'-FL HMO (human milk oligosaccharide), same as ByHeart

Widely available at every US pharmacy, grocery store, and online retailer

⚖️ Detailed Ingredient Comparison

These two formulas take fundamentally different approaches to infant nutrition. Understanding what each ingredient choice means helps you match the right formula to your baby.

Protein approach — the biggest difference: ByHeart keeps whole milk protein intact with minimal processing, arguing that preserving protein structure is gentler. Gerber GentlePro partially hydrolyzes (breaks down) whey protein, making individual protein fragments smaller and easier to digest. For healthy babies with no sensitivities, ByHeart's intact protein is fine. For fussy or gassy babies, GentlePro's hydrolyzed protein provides immediate digestive relief because baby's system does less work breaking it down.

Carbohydrate quality: ByHeart uses only organic lactose — the gold standard for infant formula carbohydrates. GentlePro uses a blend of lactose and corn maltodextrin. Maltodextrin is a processed carbohydrate that provides energy but spikes blood sugar faster than lactose. This is ByHeart's clearest ingredient advantage.

Fat blend: ByHeart's breast milk-inspired sn-2 palmitate fat blend is specifically structured for optimal absorption and softer stools. GentlePro uses a conventional vegetable oil blend including palm olein, which some studies link to harder stools and reduced calcium absorption. ByHeart has a meaningful advantage here.

Probiotic support: GentlePro includes L. reuteri, which has strong clinical evidence for reducing infant colic and crying. Multiple randomized controlled trials show L. reuteri significantly decreases crying time in colicky breastfed infants, and it is now being studied in formula-fed infants with promising results. ByHeart does not include any probiotics. This is GentlePro's clearest advantage.

Prebiotics: Both formulas include 2'-FL HMO, making this category a draw. Both support gut health and immune function through the same prebiotic mechanism.

DHA source: ByHeart uses algal oil (vegan, no fish taste). GentlePro uses standard DHA sources. Both provide adequate DHA for brain development.

💰 Price, Availability, and Practical Factors

The price and availability gap between these two formulas is significant and can be a deciding factor for many families.

ByHeart: ~$36 per 24 oz (~$1.50/oz). Available at byheart.com, Amazon, and Target. Subscription discounts available.

Gerber GentlePro: ~$28 per 20 oz (~$1.40/oz). Available at essentially every US retailer — Walmart, Target, CVS, Walgreens, Amazon, grocery stores. Often available with manufacturer coupons, store sales, and WIC coverage in most states.

Annual cost difference: ByHeart ~$1,800–$2,200/year | GentlePro ~$1,500–$1,800/year. The difference of $300–$600 per year is meaningful for many families, especially when you factor in GentlePro's frequent sales and coupon availability.

Emergency access: If you run out of GentlePro at 2 AM, you can find it at any 24-hour pharmacy or Walmart. ByHeart requires online ordering or a trip to Target. For peace of mind, GentlePro's ubiquity is a real advantage.

WIC coverage: Gerber GentlePro is covered by WIC in most states. ByHeart is not WIC-eligible. This is a critical factor for eligible families.

Pediatrician familiarity: Nearly every US pediatrician knows GentlePro and can advise on it. ByHeart is newer and less well-known in clinical settings, though it is gaining recognition.

🏆 Which Formula Should You Choose?

This comparison is less about "which is better" and more about "which is right for your specific baby." These formulas serve different needs.

Choose ByHeart if: Your baby is healthy with no digestive issues, you want the cleanest possible ingredient list (organic lactose only, no maltodextrin), you value a breast milk-inspired fat blend for optimal nutrition and softer stools, you are willing to pay a premium for ingredient quality, and your baby does not need hydrolyzed protein.

Choose Gerber GentlePro if: Your baby is fussy, gassy, or colicky on standard formula — GentlePro's partially hydrolyzed protein and L. reuteri probiotic are specifically designed for these issues. Also choose GentlePro if budget matters (it is $8+ cheaper per container), you want maximum availability (every store carries it), you need WIC coverage, or your pediatrician recommends a gentle formula.

For fussy babies — try GentlePro first: If your baby has digestive discomfort, GentlePro is the more targeted solution at a lower price. Its hydrolyzed protein and clinically studied probiotic directly address fussiness and gas. If GentlePro resolves the issues, there may be no reason to pay more for ByHeart.

For healthy babies wanting premium: If your baby is thriving and you want the most nutritionally optimized formula available, ByHeart's intact protein, organic lactose, and engineered fat blend represent the premium choice. You are paying for ingredient purity and advanced nutritional science.

📋 Quick Comparison Summary

Price: ByHeart ~$36/24 oz | GentlePro ~$28/20 oz

Protein: ByHeart intact whole milk (minimally processed) | GentlePro partially hydrolyzed whey (broken down)

Carbs: ByHeart organic lactose only | GentlePro lactose + corn maltodextrin

Fat: ByHeart breast milk-inspired blend (no palm oil) | GentlePro standard vegetable oils (includes palm olein)

Probiotics: ByHeart — none | GentlePro — L. reuteri (clinically proven for colic)

Prebiotics: Both include 2'-FL HMO

DHA: ByHeart algal oil | GentlePro standard sources

Availability: ByHeart online + select stores | GentlePro everywhere

WIC eligible: ByHeart no | GentlePro yes (most states)

Best for: ByHeart = healthy babies, premium ingredients | GentlePro = fussy/gassy babies, budget-conscious families