No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Lacta-Zyme Ingredients & Drug Interactions

by Douglas Laboratories

Lacta-Zyme label
See full label image
Capsule Category: Non-nutrient/non-botanical
No known interaction
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Lacta-Zyme against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line No known interaction

Lacta-Zyme is a dietary supplement by Douglas Laboratories with 1 active ingredient. Its ingredients are commonly taken for lactose intolerance, gas and bloating after dairy, diarrhea from dairy foods.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

Jump to a section

HelloPharmacist Scorecard of Lacta-Zyme by Douglas Laboratories

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

Lacta-Zyme contains one active ingredient: lactase, an enzyme that breaks down lactose (milk sugar) in your digestive system. The capsule is filled with inactive ingredients — gelatin, cellulose, and vegetable stearate — which are fillers and binders that hold the formula together.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded Lactase's overall clinical evidence instead.

Strong

Strong clinical evidence supports Lactase for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Lactose intolerance — rated "Effective" (Natural Medicines).

Lactase is effective for lactose intolerance, helping you digest milk and dairy products without discomfort. The evidence for its use in prematurity and infant colic is insufficient — we don't have reliable data showing it works for those purposes.

The evidence, ingredient by ingredient Lactase

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Lactase is generally well tolerated when you take it as directed. A rare case of allergic reaction (contact dermatitis and allergic rhinitis) has been reported in someone exposed to powdered lactase, so if you've ever had an allergy to the enzyme itself, this isn't for you.

If you're pregnant or breastfeeding, the safety data rates lactase as likely safe, but you should still check with your doctor or pharmacist first before starting regular use, since data in pregnancy is limited.

Side effects, ingredient by ingredient Lactase

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for the ingredient we checked. If you take any medications, you can verify them against our search tool, or ask your pharmacist to review your specific list.

The bottom line

Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. No medication interactions are currently documented, and safety information is well characterized.

Lacta-Zyme is a straightforward enzyme supplement for people who have trouble digesting milk sugar. It's generally well tolerated and doesn't interact with medications we've checked.

If you're pregnant, breastfeeding, or have a known lactase allergy, talk it over with your doctor or pharmacist first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Jun 1, 2012.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Lacta-Zyme, straight from the product label.

Brand Douglas Laboratories
Barcode (UPC) 310539010013
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD Jun 1, 2012
DSLD ID 9544
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Dairy Free, Sugar Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Lacta-Zyme by Douglas Laboratories, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
100
UPC/BARCODE
310539010013
IngredientAmount% DV
Lactase12 mg--

Other ingredients: Gelatin, Cellulose, Vegetable Stearate

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity

A Dietary Supplement

Formulation

This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Suggested/Recommended/Usage/Directions

Suggested Usage: As a dietary supplement, adults take 1 capsule daily or as directed by your healthcare professional.

Precautions

KEEP OUT OF REACH OF CHILDREN.

Tamper resistant package, do not use if outer seal is missing.

Storage

For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

General

Formula #70043

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Lacta-Zyme by Douglas Laboratories label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Lacta-Zyme label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Lacta-Zyme by Douglas Laboratories

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.

Lactase

No known
interactions
12 mg per serving

Lactase is a digestive enzyme supplement that helps people who lack enough natural lactase break down lactose, the sugar in milk and dairy. It can red...

Lactase monograph & interactions

Other (inactive) ingredients: Gelatin, Cellulose, Vegetable Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Lacta-Zyme by Douglas Laboratories Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Lacta-Zyme. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for Lacta-Zyme, from the product label.

Douglas Laboratories

See all Douglas Laboratories products
Name
Douglas Laboratories
Street Address
600 Boyce Road
City
Pittsburgh
State
PA
ZipCode
15205
Web Address
www.douglaslabs.com
Pharmacist Counseling Corner

Lacta-Zyme by Douglas Laboratories: Common Questions

Does Lacta-Zyme by Douglas Laboratories interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Lacta-Zyme. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Lacta-Zyme contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Will Lacta-Zyme help my lactose intolerance?
Yes — lactase is effective for lactose intolerance. It breaks down the milk sugar in your digestive tract so you can eat or drink dairy without discomfort.
Can I use this if I'm pregnant?
Lactase is rated likely safe in pregnancy, but the safety data is limited. Talk with your doctor or pharmacist before you start taking it regularly so you can make a decision that fits your situation.
Can I use this while breastfeeding?
Lactase is rated likely safe while breastfeeding. Since the enzyme works only in your gut and doesn't enter your bloodstream in any meaningful amount, it's unlikely to affect your milk. Still, check with your doctor or pharmacist first.
What's in each capsule besides lactase?
The capsule contains gelatin, cellulose, and vegetable stearate — fillers and binders that hold the formula together. There are no active ingredients other than lactase.
Has anyone had a bad reaction to lactase?
A rare allergic reaction has been reported in someone who worked with powdered lactase and was exposed to it over time. If you've ever had an allergy to lactase itself, this product isn't right for you.
Will this help with colic or premature infant issues?
We don't have reliable evidence showing lactase works for either colic or prematurity, so we can't say whether it'll help. Talk with your child's doctor about what's proven to work.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Lacta-Zyme is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Lacta-Zyme label
Go deeper

The Full Monographs Behind Lacta-Zyme’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Lactase

Lactase is a digestive enzyme supplement that helps people who lack enough natural lactase break down lactose, the sugar in milk and dairy. It can reduce gas, bloating, cramping, and diarrhe...

Read the full Lactase monograph →
Sources

Sources & How We Checked

Lacta-Zyme's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 1 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Lactase 1 reference
  1. Laukkanen A, Ruoppi P, Remes S, Koistinen T, Mäkinen-Kiljunen S. Lactase-induced occupational protein contact dermatitis and allergic rhinoconjunctivitis. Contact Dermatitis. 2007;57(2):89-93. PubMed

See these in context on the Lactase monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team