Lactaid 100% Lactose Free Whole Milk: Full Nutrition, Labelgrade B (78/100)
B 78 / 100 — Nutritionally identical to regular whole milk, just lactose-free. Zero added sugar (the 12g is all naturally-occurring milk sugar) and low sodium; the 5g of saturated fat and modest protein density are what hold it at a B.
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Lactaid 100% Lactose-Free Whole Milk is regular whole milk with one addition: the lactase enzyme, which splits the milk sugar before you drink it so a lactose-intolerant gut never has to. Everything on the nutrition panel is identical to the whole milk beside it on the shelf — 8g of protein and 160 calories per 1 cup (240 ml) (USDA FDC 2756898), with 8g of fat (5g saturated), 12g of sugar (zero added), and 300mg of calcium. The Labelgrade is B (78 / 100). The point of this product isn’t better nutrition — it’s digestibility. The lactase doesn’t add protein, cut fat, or remove sugar; it just makes the sugar that’s already there absorbable.
Why the B
| Dimension | Grade | Score | Why |
|---|---|---|---|
| Protein density | C- | 55 / 100 | 8g per cup, 3.3g per 100mL — exactly regular whole milk. A solid 16% of the daily target per glass, but milk is mostly water, so it’s not a dense protein source |
| Ingredient quality | B+ | 83 / 100 | Three things: milk, lactase enzyme, vitamin D3. The lactase is the lactose-free mechanism; the D3 is standard for US milk. No gums, no stabilizers, nothing a regular carton lacks |
| Saturated fat load | A- | 87 / 100 | 5g per cup, about 25% of the FDA’s 20g daily limit. The grade rewards the low per-100mL density (2.1g); per serving it’s the main weight on the overall score |
| Sodium load | A+ | 100 / 100 | 125mg per cup, roughly 5% of the daily limit — genuinely low. Nothing here concentrates the minerals, so sodium sits where plain milk sits |
| Sugar load | A+ | 100 / 100 | 12g per cup, every gram naturally-occurring milk sugar — zero added. In Lactaid that sugar is pre-split into glucose and galactose, which is why it digests without symptoms but still reads as “sugars” |
| Fiber | F | 30 / 100 | 0g, as expected for any milk |
| Overall | B | 77 / 100 | Protein density and saturated fat hold it at a B; everything else is top-marks. A clean, honest whole milk whose lactose-free trait is the entire reason to choose it |
The lactose-free trick: same sugar, different digestion
The most common confusion this milk creates is right on its own label: it says “100% lactose-free” and “12g sugar” in the same breath. Both are true, and the reason is worth understanding. Lactose is a disaccharide — one glucose molecule bonded to one galactose. To absorb it, your small intestine needs the enzyme lactase to snap that bond. People with lactose intolerance make too little lactase, so undigested lactose travels to the colon where gut bacteria ferment it, producing the bloating, gas, and cramps.
Lactaid does the enzyme’s job in the carton. Added lactase pre-splits the lactose into its two simple sugars before you ever drink it, so your body absorbs them directly — no lactase required. But splitting a sugar doesn’t make it disappear: the glucose and galactose still register on the nutrition panel as 12g of “sugars,” the same number a regular whole milk shows. That’s also why lactose-free milk tastes faintly sweeter than regular milk — free glucose and galactose are sweeter on the tongue than the intact lactose they came from.
What the enzyme does not change
It’s easy to read “lactose-free” as a health upgrade. It isn’t one, and Lactaid doesn’t claim it is. The lactase enzyme is a pair of molecular scissors — it cuts one bond in the sugar and does nothing else. The protein is untouched at 8g (the casein and whey are identical to regular milk). The fat is untouched at 8g, including the 5g of saturated fat that is simply what comes with whole milk. The calcium is untouched at 300mg, about 25% of a day’s worth. Calories are untouched at 160.
The practical takeaway: if you drink regular milk without trouble, this carton offers you nothing nutritionally and costs more. Lactaid earns its premium only for the roughly 30–35% of adults with reduced lactase, for whom it converts a milk that causes symptoms into one that doesn’t — same glass of milk, minus the stomachache.
If you want more protein, or less fat
Lactaid whole milk is a faithful copy of regular whole milk, which means its two soft spots — modest protein density and 5g of saturated fat — are whole milk’s soft spots, not Lactaid’s. Two honest off-ramps:
- For more protein per glass, an ultra-filtered milk does more. Fairlife’s ultra-filtered 2% carries about 13g of protein per cup versus Lactaid’s 8g — its filtration concentrates the protein and minerals — and it’s also lactose-free. The trade-off is that Fairlife doesn’t sell a true full-fat whole version, so you give up the whole-milk fat and mouthfeel.
- For less saturated fat while keeping the lactose-free benefit, stay in the Lactaid line: the 2% carton drops to about 3g of saturated fat (130 cal) and the fat-free to 0g (about 80 cal), both with the protein unchanged at 8g.
If neither of those is your goal — you just want real whole milk that won’t turn on your stomach — this is the right carton, and the grade reflects an honest whole milk doing exactly that.
Ingredients
Milk, Lactase Enzyme (Ingredient Not in Regular Milk), Vitamin D3. Contains Milk. (Verbatim from the USDA Branded Foods entry, FDC 2756898. The lactase enzyme is the only line item not found in a regular carton of milk; the vitamin D3 is standard fortification for nearly all US milk.)
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Quick Facts
Per serving · 1 cup (240 ml)
See how this fits your day — protein calculator · macro calculator
Full nutrition facts
| Nutrient | Per Serving (1 cup (240 ml)) |
|---|---|
| Calories | 160 |
| Protein | 8g |
| Total Fat | 8g |
| Saturated Fat | 5g |
| Trans Fat | 0g |
| Total Carbohydrates | 13g |
| Dietary Fiber | 0g |
| Total Sugars | 12g |
| Added Sugars | 0g |
| Sodium | 125mg |
| Cholesterol | 35mg |
| Calcium | 300mg |
| Potassium | 400mg |
Scope: This page applies specifically to Lactaid 100% Lactose Free Whole Milk · UPC 00041383090363. Other sizes, flavors, or formulations may differ.
How this fits each diet
Each score is computed from the same USDA nutrition + ingredient data, against the published rules of each diet. They tell you "does this food fit this diet" — not whether the diet is right for you.
contains animal-derived ingredients
contains no listed meat or fish
no wheat, barley, rye, or malt detected in USDA ingredient list
Frequently Asked Questions
How much protein is in Lactaid 100% Lactose Free Whole Milk?
8 grams per 1 cup (240 ml), the same as any regular whole milk (USDA FDC 2756898). That works out to 3.3g per 100mL, or about 1g per fl oz. The lactase enzyme that makes it lactose-free doesn't touch the protein — casein and whey are untouched.
Is Lactaid whole milk healthier than regular whole milk?
No, and it isn't meant to be. The macros are identical: same 8g protein, 8g fat, 5g saturated fat, 12g sugar, 160 calories, 300mg calcium. The single difference is the added lactase enzyme, which pre-digests the milk sugar for people who can't. If you tolerate regular milk fine, Lactaid is the same drink at a higher price — you're paying for an enzyme you don't need.
If it's lactose-free, why does the label still say 12g of sugar?
Because lactose-free isn't sugar-free. Lactase splits each lactose molecule into glucose and galactose — two simple sugars your body absorbs without needing lactase of its own. Those still count as 'sugars' on the panel, so a lactose-free milk reads the same 12g as the regular carton. None of it is added; it's the milk's own sugar, just pre-split.
Is Lactaid whole milk safe for a milk allergy?
No. Lactose intolerance and milk allergy are different problems. Lactaid removes the lactose, but it still contains all of milk's proteins — casein and whey — which are exactly what a milk allergy reacts to. Lactaid is for lactose intolerance (a digestive enzyme shortage), not for allergy. If you have a diagnosed milk allergy, this is not a safe product.
How does Lactaid whole milk compare to Fairlife for protein?
Fairlife's ultra-filtration concentrates the protein: its 2% carton runs about 13g per cup versus Lactaid's 8g, and both are lactose-free. If more protein per glass is the goal, Fairlife wins. If you specifically want full-fat whole milk that tastes like regular milk and just won't upset your stomach, Lactaid whole is the closer match — Fairlife doesn't sell a true whole-milk version.
Why does whole milk hold the grade at a B instead of an A?
Two reasons, both structural to whole milk. The protein density is modest (8g in a cup that's mostly water scores a C-), and the 5g of saturated fat is about a quarter of the FDA's 20g daily limit. Everything else scores top marks — zero added sugar, low sodium. Dropping to Lactaid's 2% or fat-free carton keeps the lactose-free benefit and trims the saturated fat.
Does Lactaid 100% Lactose Free Whole Milk qualify as a 'good source of protein'?
Yes. 8g per serving is 16% of the FDA's 50g Daily Value, clearing the 10% threshold for a 'good source of protein' claim. It's short of the 20% needed for 'high in protein' — normal for milk. Two cups would clear that bar.
When was this data last verified?
2026-05-31. We re-verify top-traffic pages monthly and update within 7 days when a manufacturer reformulates. The USDA FDC source ID for this product is 2756898.