Lactose-Free Milk

Food · Dairy · Food, Typed Supps

Identical to milk in every respect except one enzyme added at the factory.

Stage by stage

Sweeter (Taste): Glucose and galactose taste sweeter than lactose — no sugar was added.
Already split (Small intestine): The lactase did in the carton what the gut enzyme would have done.
Unchanged (Skeleton): 110 mg calcium, 3.1 g protein and 28 mcg iodine — the same as ordinary milk.
Not an allergy (Immune system): The milk protein is untouched, so this is no help in cow’s milk protein allergy.

Timing

Ordinary milk taken with food is better tolerated than the same amount alone, which is often enough to avoid needing this at all.

Time to effect

Immediate: No lactose remains to cause symptoms.
~12 g lactose: What most lactose-intolerant people tolerate in one sitting.

Allergens

Contains: Milk. Derived from what this food is, not from a product label.

Eating patterns

Fits: Vegetarian, Pescatarian, Halal, Kosher, Keto, Low-FODMAP, Gluten-free.

Satiety

130 on the satiety index, where white bread is 100 — moderate. Modelled from the Holt et al. (1995) measurements.

Environmental footprint

3.2 kg CO2e and 628 litres of freshwater per kg, matched to "Milk" in Poore & Nemecek (2018), Science 360.

Cost band

Cheap — roughly £2.5 per kg, as a band midpoint rather than a price.

Key nutrients

Calcium
Iodine
Protein

Nutrition per 100g

Calories: 59
Protein: 3.1g
Carbohydrate: 4.7g
of which sugars: 4.5g
Fat: 3.1g
of which saturated: 2.1g
Sodium: 35mg

Food vs. supplement

Lactase tablets and lactose-free milk are the same intervention delivered at different points — one adds the enzyme to the carton, the other adds it to you. The tablets are more useful when you cannot choose the milk.

Kitchen tip

You probably do not need to avoid all dairy. Most people manage around a cup of milk at a time, especially alongside food.

Common myth

“I’m allergic to dairy, so I drink lactose-free milk.” In reality: These are two different conditions. Lactose intolerance is a missing enzyme, and lactose-free milk solves it entirely. Cow’s milk protein allergy is an immune reaction to the protein, which lactose-free milk contains in full — it is no help at all and could be dangerous. Worth being certain which one applies.

In the glossary

Enzyme