Drug & supplement interaction

Lactase + Esomeprazole, Naproxen

Esomeprazole, Naproxen brand name: Vimovo.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Lactase and Esomeprazole, Naproxen in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Esomeprazole, Naproxen states a food rule worth keeping to.

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Interaction report

Lactase and Esomeprazole, Naproxen

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Esomeprazole, Naproxen and Lactase in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Lactase at all — not against Esomeprazole, Naproxen, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Lactase safety at a glance

Lactase overall Generally safe Lactase is generally well tolerated when used as directed.
Pregnancy Likely Safe When used orally and appropriately with lactose-containing foods. Read the full pregnancy detail
Breastfeeding Likely Safe When used orally and appropriately with lactose-containing foods. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Esomeprazole, Naproxen and Lactase? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Lactase Itself Has Been Linked To

This is not an interaction — nothing below involves Esomeprazole, Naproxen. It is the side-effect record for Lactase on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Lactase, this list is the first place to look.

  • A skin rash Additional detail

    “A case of lactase-induced contact dermatitis and immunoglobulin E (IgE)-mediated allergic rhinoconjunctivitis has been reported in a worker exposed to powdered lactase. Allergy to lactase was confirmed by prick test, open application test, and chamber challenge test.”

    Lactase · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    1 source cited
    1. 96348. 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

Everything above comes from the Natural Medicines adverse-effect record for Lactase — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Esomeprazole, Naproxen’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Esomeprazole, Naproxen column appears here.

Special populations

Lactase in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When used orally and appropriately with lactose-containing foods.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

How to take them

Some Esomeprazole, Naproxen Products Have a Food Rule — Lactase Should Not Break It

At least one FDA label for a product containing Esomeprazole, Naproxen says to take it on an empty stomach. Most supplements — Lactase included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Esomeprazole, Naproxen on its own and move Lactase to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Esomeprazole, Naproxen products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Take naproxen and esomeprazole magnesium delayed-release tablets at least 30 minutes before meals.

From the Dosage and Administration section of the FDA label we read for Esomeprazole, Naproxen — where that label names a specific product, the instruction is that product's.

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Esomeprazole, Naproxen

This page covers Lactase only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Esomeprazole, Naproxen page lists 348 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Beer (major), Danshen (major) and Grapefruit (major).

By severity: 9 major · 283 moderate · 56 minor.

From our pharmacist’s overview on the Esomeprazole, Naproxen page

“Bleeding risk is the thread running through nearly this whole page. Vimovo pairs naproxen, an anti-inflammatory that already makes stomach bleeding more likely, with esomeprazole on board to shield the gut, and most of the supplements flagged here could push that bleeding risk higher still.”

Reviewed by 2 · Jul 18, 2026

Open the Esomeprazole, Naproxen interaction page

One more smart check

Taking Lactase as Part of a Dietary Supplement Product? Check It for Interactions

We hold 3,200 real supplement products containing Lactase, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lactase. Even though Lactase itself has no known interaction with Esomeprazole, Naproxen, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Lactase and Esomeprazole, Naproxen Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Lactase
Top 10%

#88 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Esomeprazole, Naproxen
Steady interest

#1,469 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Lactase reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lactase and Esomeprazole, Naproxen records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Lactase

What is Lactase?

  • Lactose intolerance
  • Gas and bloating after dairy
  • Diarrhea from dairy foods
  • Stomach cramps from milk products

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 diarrhea when taken with dairy foods, and it is generally considered safe for most people. It treats symptoms only and does not cure lactose intolerance.

Enzyme (often sourced from yeast such as Kluyveromyces lactis or fungi like Aspergillus species) · Tablets, caplets, chewables, drops (liquid), and capsules

An interaction check asks whether these two react with each other — it does not ask whether Lactase is a good idea for someone in your situation. Here is what our Lactase record says about it on its own.

Lactase: dosing

There is no single official dose for lactase. The amount of enzyme is usually measured in FCC lactase units, and different products contain different strengths.In general, lactase is taken right before or with the first bite of a dairy-containing food or drink. With liquid drops, you can add them to milk and let it sit as directed on the label. Start with the smallest amount that controls your symptoms.

From our Lactase monograph — the full record covers uses, side effects and every documented interaction.

Read the full Lactase monograph & all interactions
Keep checking

Other Drugs & Lactase

Browse every other medication we’ve checked against Lactase — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Lactase against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Lactase list.

See the full Lactase interactions page
See every supplement checked against Esomeprazole, Naproxen, ranked by severity
Evidence & sources

Lactase References

The 1 references that drive our Lactase monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  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

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Lactase and Esomeprazole, Naproxen Together: Common Questions

Is it safe to take Lactase with Esomeprazole, Naproxen?
We do not list a known interaction between Lactase and Esomeprazole, Naproxen. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Should I take Lactase and Esomeprazole, Naproxen at the same time of day?
At least one FDA label for a product containing Esomeprazole, Naproxen says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Esomeprazole, Naproxen on its own and move Lactase to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
Does Esomeprazole, Naproxen interact with any supplements?
Yes. Esomeprazole, Naproxen has documented interactions with 348 supplements in our database — Lactase is not one of them. The Esomeprazole, Naproxen interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Lactase monograph Uses, safety profile, and every drug interaction in one place Esomeprazole, Naproxen supplement interactions Every supplement checked against Esomeprazole, Naproxen, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Esomeprazole, Naproxen and Lactase?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.