What is lactase in simple terms?

It is an enzyme that breaks milk sugar (lactose) into glucose and galactose. The body makes it in the small intestine, and supplements use lactase produced by fungi or yeasts.

How do I know if I am lactose intolerant?

The typical pattern is bloating, rumbling, gas, abdominal pain or diarrhea 30 minutes to 2 hours after dairy. A hydrogen breath test or a genetic test can confirm it, but the final call is best made with a doctor.

How much lactose can I have if I am intolerant?

According to EFSA, most people with lactose intolerance tolerate up to 12 g of lactose at once, roughly a glass of milk. Spreading dairy across the day improves tolerance further.

When should I take lactase?

With the first sip or bite of a dairy-containing meal. The effect recognized in the EU requires at least 4,500 FCC units with each lactose-containing meal.

Will lactase help with a milk allergy?

No. Cow's milk protein allergy is an immune reaction to milk protein, and lactose plays no part. With an allergy, milk proteins must be avoided, and lactase does not prevent the reaction.

Can lactase be given to babies with colic?

Only on a pediatrician's advice. A 2018 Cochrane review found no convincing evidence that lactase helps infant colic.

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