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Lactase enzyme

Lactose intolerance · Dairy digestion

Tier 2 — Promising

What it is

Provides the enzyme your small intestine needs to break down lactose in dairy. Cochrane confirmed lactase supplements effectively prevent lactose intolerance symptoms when taken with dairy foods. Works immediately — there is no loading period. You must take it at the moment you eat dairy for it to work. Extremely safe with no systemic absorption and no drug interactions whatsoever.

Efficacy

4/5

Safety

5/5

Research

4/5

Onset

5/5

Cost

5/5

Drug-int.

5/5

Dose

6,000–9,000 FCC lactase units chewed or swallowed at the very first bite of a dairy-containing food. Higher dairy loads may need 18,000+ FCC. Does not work if taken before or after the meal.

Time of day & tips

Take at the very first bite of dairy-containing food — must be present when lactose arrives. Does not work if taken before or after the meal. Available as drops for infants.

Sensitive populations: This supplement's evidence base touches pregnancy, pediatric, or other sensitive populations. Confirm any change with your healthcare provider before use.

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