Digestive

Lactase

Also known as: Dairy digest, Dairy digestive enzyme, Lactaid, Lactase enzyme

Evidence

Enzyme for lactose digestion. Essential for those with lactose intolerance to enjoy dairy.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

Lactose intolerance
Dairy digestion

How it works

Breaks down lactose to glucose and galactose
Allows dairy consumption

Dosage

Typical range: 3000-9000 FCC units per serving
Timing: With first bite of dairy
With food: Yes
Duration: As needed
Special populations: Lactose intolerant

Forms

Tablets
Capsules
Drops

Safety

Common side effects

None

Contraindications

None

Evidence notes

Well-established for lactose intolerance

Grade A: Multiple well-designed human trials support the main claims.

Related in Digestive

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.