Enfamil Gentlease vs Gerber Good Start GentlePro (2026): Which Formula Is Better?
The most direct competitors in the gentle formula market — both partially hydrolyzed, both for fussy babies. The differences are smaller than you'd think.
By TeachToddler Editorial Team · Updated April 11, 2026 · Formula Comparison
These Are Direct Competitors
Unlike most formula comparisons where you're choosing between different categories (gentle vs hypoallergenic, milk vs soy), Gentlease and GentlePro are nearly identical in approach. Both are partially hydrolyzed cow's milk formulas designed for fussy, gassy babies. Choosing between them comes down to smaller differences in formulation, price, and your baby's individual response.
- Enfamil Gentlease (~$30/12.4 oz) — Partially hydrolyzed nonfat milk and whey protein concentrate. Lactose reduced to 20%. No probiotics. Enfamil's flagship gentle formula and the best-selling gentle formula in the US.
- Gerber Good Start GentlePro (~$28/12.7 oz) — 100% partially hydrolyzed whey protein (Gerber's "Comfort Proteins"). Contains lactose (not as aggressively reduced as Gentlease). Includes the probiotic L. reuteri. Gerber's flagship gentle formula.
- Both formulas provide 20 cal/fl oz, include DHA/ARA, are iron-fortified, and meet all FDA requirements. For most babies, the practical difference is minimal.
Key Differences That Actually Matter
While the formulas are similar in concept, there are a few real differences worth understanding:
- Protein composition: Gentlease uses a blend of partially hydrolyzed nonfat milk and whey protein (roughly 60:40 whey-to-casein ratio). GentlePro uses 100% partially hydrolyzed whey protein — no casein. Whey is inherently faster to digest than casein, so GentlePro may have a slight edge in digestion speed.
- Lactose content: Gentlease specifically reduces lactose to about 20% of its carbohydrate blend, replacing the rest with corn syrup solids. GentlePro retains a higher proportion of lactose. If you suspect lactose is the issue, Gentlease removes more of it. If lactose isn't the problem, GentlePro's higher lactose is a nutritional advantage (better calcium absorption, brain-friendly galactose).
- Probiotic L. reuteri: GentlePro includes Lactobacillus reuteri DSM 17938, the most-studied probiotic strain in infants. Studies show it can reduce daily crying time by 30–50 minutes in some colicky babies and may support immune development. Gentlease does not include any probiotic.
- Price: GentlePro is typically ~$2–3 cheaper per can and comes in a slightly larger container (12.7 oz vs 12.4 oz). Over a year, this saves roughly $70–100.
- 2'-FL HMO: GentlePro includes 2'-fucosyllactose (2'-FL), a human milk oligosaccharide found in breast milk that supports immune and gut health. Gentlease does not include HMOs.
Honest take: either one works for most babies. If you're standing in the store agonizing over this choice, just pick one and try it for 1–2 weeks. If it works, great — stick with it. If it doesn't, switch to the other. The formulas are similar enough that the biggest variable is your individual baby's response, which no comparison article can predict.
Detailed Ingredient Comparison
For parents who want to look under the hood, here's the full ingredient breakdown:
- Protein source: Gentlease — partially hydrolyzed nonfat milk + whey protein concentrate. GentlePro — 100% whey protein concentrate hydrolysate. Both are cow's milk-derived and partially hydrolyzed.
- Carbohydrate: Gentlease — corn syrup solids (80%) + lactose (20%). GentlePro — lactose + corn maltodextrin. GentlePro leans more on lactose as its primary carb.
- Fat: Both use palm olein, soy, coconut, and high oleic sunflower/safflower oils. Both include DHA (docosahexaenoic acid) and ARA (arachidonic acid) from single-cell oil sources.
- Functional additions: GentlePro adds L. reuteri probiotic and 2'-FL HMO. Gentlease includes neither. Gerber markets these additions heavily, and they do have research support — though whether they make a noticeable difference for your specific baby varies.
- Iron: Both are iron-fortified at comparable levels (~1.8 mg per 5 fl oz serving).
Reasons to Lean Toward Gentlease
Gentlease may be the better pick if any of the following apply:
- You specifically suspect lactose is contributing to your baby's gas — Gentlease removes more of it (80% reduction vs GentlePro's smaller reduction)
- Your baby was doing okay on Enfamil Infant and you want to stay in the Enfamil family for the most similar taste profile
- Your pediatrician specifically recommended Gentlease by name
- Your baby previously didn't respond well to a Gerber formula
- The Enfamil store-brand equivalent (like Parent's Choice Sensitivity) is easier to find or cheaper in your area
Reasons to Lean Toward GentlePro
GentlePro may have the edge if these factors matter to you:
- Price: ~$2–3 cheaper per can adds up to $70–100/year in savings
- Probiotic included: L. reuteri has solid research behind it for colic reduction, and you won't need to buy a separate probiotic supplement
- 2'-FL HMO: This breast milk component supports immune function and isn't found in Gentlease
- 100% whey protein: Whey digests faster than casein — if speed of digestion is important (reflux, spit-up), the all-whey formula may help
- Higher lactose: If lactose isn't the problem, retaining more of it is nutritionally beneficial — lactose is the preferred carbohydrate for infant development
- Your baby was on a Gerber formula previously and you want a consistent taste transition
Price and Store-Brand Options
Both formulas have affordable alternatives for budget-conscious families.
- Gentlease: ~$30 for 12.4 oz. Store brands: Parent's Choice Gentle (~$18), up Gentle (~$20), Kirkland Gentle (~$20 for larger tub at Costco).
- GentlePro: ~$28 for 12.7 oz. Store brands: Similar generic gentle formulas work, though most don't include L. reuteri specifically.
- Best budget approach: If the probiotic isn't critical to you, store-brand gentle formula at ~$18–20 per can delivers the same partially hydrolyzed protein approach at 35–40% less cost. You can add a separate infant probiotic drop (~$15–20/month) if desired.
- Subscribe and save: Both Enfamil and Gerber offer subscription discounts (5–15% off) through their websites and Amazon. At formula-feeding volumes (3–4 cans/month), this is worth setting up.
Switching Between Gentlease and GentlePro
Because these formulas are so similar, switching between them is one of the easiest formula transitions you can make.
- Direct switch is usually fine: Since both are partially hydrolyzed milk formulas, most babies tolerate an immediate switch without a gradual transition period.
- If your baby is very sensitive: A quick 2–3 day gradual transition (50/50 mix for a couple of days) provides extra safety margin but usually isn't necessary.
- Give the new formula 1–2 weeks: Even with a close match, individual babies respond differently. Don't judge the new formula based on the first day — give it a proper trial.
- Watch for changes: The slightly different lactose levels and the presence/absence of probiotic may cause minor stool changes. Looser or firmer stools during the first few days of transition are normal.