Lactase

Digestive

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

Grade A

💊 3000-9000 FCC units per serving🎯 2 primary uses🔗 1 synergy⚠️ Review warnings

Compare Check interactions

Levels upNutrition+50 pts

Overview

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

Primary Uses

Lactose intoleranceDairy digestion

Frequently Asked About Lactase

How much Lactase should I take?

The typical effective range is 3000-9000 FCC units per serving. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.

When is the best time to take Lactase?

With first bite of dairy. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.

Should I take Lactase with food?

Yes.

Does Lactase interact with medications?

Yes — known interactions include None. If you take any prescription medication, talk to your doctor or pharmacist before starting Lactase.

What does Lactase pair well with?

Lactase stacks well with Digestive enzymes — these combinations either improve absorption or work synergistically toward common goals.

Who should not take Lactase?

Lactase should be avoided or used with caution by people with None. Pregnant or breastfeeding women should consult a healthcare provider before use.

What are the side effects of Lactase?

Most people tolerate Lactase well. The most commonly reported side effects are None. Side effects are usually dose-dependent — lowering the dose often resolves them.

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

Research & Studies

Search the literature now

We haven’t curated landmark studies for Lactaseyet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.

Search Lactase research

PubMed (RCTs) ↗Randomized trials PubMed (all) ↗Full literature Cochrane Reviews ↗Systematic reviews Examine.com ↗Research summaries

Browse all curated studies →

Mechanism of Action

• Breaks down lactose to glucose and galactose
• Allows dairy consumption

Evidence Quality

Evidence Grade A

Well-established for lactose intolerance

Safety & Contraindications

Serious Warnings

• None

Contraindications

• None

Common Side Effects

• None

Pregnancy & Breastfeeding

Consult healthcare provider

Liver & Kidney Notes

Safe

Interactions

💊 Medications

• None

🧪 Supplements

• None

🍽️ Food & Alcohol

• No interactions

Stacking & Synergies

Pairs Well With

Digestive enzymes ↗

Avoid Combining With

None

Best Goal Synergies

Dairy tolerance

Buying Guide

What to Look For

• Adequate units for meal size

Standardization Markers

FCC or ALU units

Adulteration risk

Low

Practical Notes

• Dose based on lactose in meal
• More dairy = more enzyme

More in Digestive

Other ingredients in the Digestive category.

Alpha-Galactosidase

Enzyme for breaking down gas-producing sugars in beans and cruciferous vegetables.

Amylase

Starch-digesting enzyme. Helps break down complex carbohydrates for those with carb intolerance.

Betaine HCl

Supplemental stomach acid for those with low acid production. Supports protein digestion and mineral absorption.

Bromelain

Pineapple-derived protease enzyme supporting protein digestion and having anti-inflammatory properties.

Digestive Enzyme Complex

Broad-spectrum enzyme blend for protein, carbohydrate, and fat digestion. Supports overall digestive comfort.

DPP-IV Enzyme

Specialized enzyme for gluten and casein breakdown. Helps with accidental exposure, not for celiac disease.

Browse all Digestive ingredients →

Last reviewed: September 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.

Cite this page

Formulate Research Team. (2026, September). Lactase — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/lactase

Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.