Fiber, probiotics & enzymes

Lactase

The enzyme that splits milk sugar (lactose). Taken with dairy, it helps people who don’t make enough of it themselves.

15 products from US online stores, sorted by what one serving costs – as the label defines it, not by the price per pack.

7.8¢Lowest cost
per serving

Prices checked Nov 1, 2026, US
No paid placements

Why per serving?

These products don’t share one ingredient amount we could compare by – many are mixes, others list units like FCC. So we compare the price of one serving as the label defines it. A serving can be 1 tablet or 4 capsules and hold more or less – check the label before you buy.

50–240servings per pack in most of the products we checked

Where products miss quality points

How the 15 products score

Very good 90+: 0
Good 75+: 12
Fair 60+: 2
Low under 60: 1

1 product contains titanium dioxide – a food authority has banned, restricted or flagged it as a possible health risk. Its score is cut in half, so it’s always in the red range. The product says why.

have no seal from an independent testing program: 15 of 15have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 2 whose label says “third-party tested”

The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.

We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works

Good to know

Fact: 736%more per serving for the most expensive product than for the cheapest.
Fact: 498%more per serving for the cheapest liquid than for the cheapest tablets.

How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check

The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.

How we calculate

Cost per serving = price ÷ servings in the pack, with the serving as the label defines it.

Found a mistake or a product we should add? Email us

Lactase

Why per serving?

Where products miss quality points

Pack size

Lactase Enzyme 3000 FCC

Lactase Enzyme, 9,000 FCC

Lactase Enzyme 9000 FCC

Natural Lactase Enzyme, 9,000 FCC ALU

Dairy Digest Complete

Lactase Enzyme, 693 mg

Lactase

Lactase Enzyme, 300 mg

Lactase Digest

Lactase Enzyme

Lactase Powder, Unflavored

Lactase Enzyme

Lactase Powder

Lactase Drops

Gluten/Dairy Digest

Good to know