Drug & supplement interaction

Lactiplantibacillus Pentosus + Diphenhydramine

Diphenhydramine brand names: Benadryl, Dormin, Allerdryl, Valdrene, Sleep-Ettes D, and others.

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 Lactiplantibacillus Pentosus and Diphenhydramine 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.

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Interaction report

Lactiplantibacillus Pentosus and Diphenhydramine

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 Diphenhydramine and Lactiplantibacillus Pentosus 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.

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.

Lactiplantibacillus Pentosus safety at a glance

Lactiplantibacillu... overall Use caution Generally well tolerated in healthy people, but evidence is limited and some groups should be cautious.
Pregnancy Use caution Not enough safety data in pregnancy, so check with your doctor before using.
Breastfeeding Use caution Not enough safety data while breastfeeding, so check with your doctor before using.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Diphenhydramine and Lactiplantibacillus Pentosus? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Diphenhydramine

Interactions in our licensed database are recorded against drug classes, not just single drug names. Diphenhydramine is filed under 7 classifications — including cytochrome p450 2d6 (cyp2d6) inhibitors, anticholinergic drugs, topical drugs. Lactiplantibacillus Pentosus has documented interactions with 1 drug class — the most serious being antibiotic drugs (moderate) — and none of Diphenhydramine’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Lactiplantibacillus Pentosus Does Interact With Other Medications

Lactiplantibacillus Pentosus has 182 moderate known drug interactions in our database — Diphenhydramine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 182 No known interaction 2,648 (incl. Diphenhydramine)
Taking anything else?

Check Another of Your Medications Against Lactiplantibacillus Pentosus

Covers the 2,830 medications we’ve checked against Lactiplantibacillus Pentosus. Pick one to open its full report.

What to actually watch for

What Lactiplantibacillus Pentosus Itself Has Been Linked To

This is not an interaction — nothing below involves Diphenhydramine. It is the side-effect record for Lactiplantibacillus Pentosus on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Lactiplantibacillus Pentosus, this list is the first place to look. One entry is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on Additional detail

    “Since Lactiplantibacillus pentosus preparations contain live and active microorganisms, there is some concern that they might cause pathogenic infection in some patients. Some lactobacilli species have been isolated in cases of bacteremia, sepsis, splenic abscess, endocarditis, necrotizing fasciitis, pancreatic necrosis, and meningoencephalitis.”

    Lactiplantibacillus Pentosus · Natural Medicines adverse-effect record, reported in sepsis.

    1 source cited
    1. 107543. Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. PubMed

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

Overlapping uses

What Diphenhydramine Is Prescribed For, and What Lactiplantibacillus Pentosus Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Diphenhydramine is a prescription medicine with approved uses on its FDA label. Lactiplantibacillus Pentosus is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Diphenhydramine is prescribed for: Diphenhydramine temporarily relieves symptoms of hay fever, other upper respiratory allergies, and the common cold — including runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat. After Bite Xtra gel is formulated for topical use and is approved to temporarily relieve pain and itching from minor burns, minor cuts and scrapes, insect bites, minor skin irritations, and rashes from poison ivy, poison oak, and poison sumac.

Lactiplantibacillus Pentosus has been studied for:

  • Common cold studied, not established Lactiplantibacillus Pentosus has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Lactiplantibacillus Pentosus for common cold

    It is unclear if oral heat-killed Lactiplantibacillus pentosus is beneficial for preventing the common cold in older adults.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Diphenhydramine on your own; if you are taking Lactiplantibacillus Pentosus for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Lactiplantibacillus Pentosus or Diphenhydramine

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lactiplantibacillus Pentosus or Diphenhydramine, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Diphenhydramine

This page covers Lactiplantibacillus Pentosus only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Diphenhydramine page lists 147 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: 1,4-butanediol (major), Activated Charcoal (major), Beer (major), Gamma-hydroxybutyrate (ghb) (major) and Henbane (major).

By severity: 9 major · 119 moderate · 19 minor.

From our pharmacist’s overview on the Diphenhydramine page

“Diphenhydramine (Benadryl, Simply Sleep) is sedating by design, and most of the 147 supplements and herbal ingredients on this list lean into that. Seventy-eight are sedating substances themselves, alcohol and kava the standouts, and stacking them can slow breathing and reflexes well beyond ordinary drowsiness.”

Reviewed by 2 · Jul 18, 2026

Open the Diphenhydramine interaction page

How much people look this up

Where Lactiplantibacillus Pentosus and Diphenhydramine 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 Lactiplantibacillus Pentosus
Steady interest

#1,334 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Diphenhydramine
Top half

#728 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 Lactiplantibacillus Pentosus reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lactiplantibacillus Pentosus and Diphenhydramine 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 Lactiplantibacillus Pentosus

What is Lactiplantibacillus Pentosus?

  • Digestive and gut health
  • Immune support
  • Maintaining a healthy gut microbiome
  • Fermentation of foods (such as olives and vegetables)

Lactiplantibacillus pentosus is a 'friendly' probiotic bacterium found in many fermented foods and used in some supplements for gut and immune health. Research is still early, so it is not proven to treat any specific condition. It is generally considered safe for healthy adults, but people with weakened immune systems or serious illness should talk to a doctor first.

Lactiplantibacillus pentosus · Lactobacillaceae · Whole live bacterial cells (probiotic strain) · Capsules, powders, fermented foods, and some functional drinks

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

Lactiplantibacillus Pentosus: dosing

There is no established standard dose for Lactiplantibacillus pentosus. Probiotic products are usually measured in colony-forming units (CFU), and the amount can vary widely between products.The best approach is to follow the directions on the product label.

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

Read the full Lactiplantibacillus Pentosus monograph & all interactions
Medication

About Diphenhydramine

What Is Diphenhydramine Used For?

Brand names: Benadryl, Dormin, Allerdryl, Valdrene, Sleep-Ettes D, Simply Sleep, Sominex, Diphenhydramine, Compoz, Sleep Aid, Benadryl cream, Benadryl spray, Dermamycin cream, Ziradryl, Nytol

Diphenhydramine temporarily relieves symptoms of hay fever, other upper respiratory allergies, and the common cold — including runny nose, sneezing, itchy or watery eyes, and itching of the nose or throat.

After Bite Xtra gel is formulated for topical use and is approved to temporarily relieve pain and itching from minor burns, minor cuts and scrapes, insect bites, minor skin irritations, and rashes from poison ivy, poison oak, and poison sumac.

See full Diphenhydramine drug information
Keep checking

Other Drugs & Lactiplantibacillus Pentosus

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

0Major
182Moderate
0Minor
2,647No known interaction
182 Moderate 2,647 No interaction
Moderate

182 interactions

Showing 60 of 182 moderate interactions — see all 182 on the Lactiplantibacillus Pentosus page.

No interaction 2,647 drugs checked — show the list

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

Showing the 60 most looked-up of 2,647 medications checked with no known interaction — see the full Lactiplantibacillus Pentosus list.

See the full Lactiplantibacillus Pentosus interactions page
See every supplement checked against Diphenhydramine, ranked by severity
Evidence & sources

Lactiplantibacillus Pentosus References

The 2 references that drive our Lactiplantibacillus Pentosus 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. Pierce A. The American Pharmaceutical Association Practical Guide to Natural Medicines. New York: The Stonesong Press, 1999:19.
  2. Rossi F, Amadoro C, Gasperi M, Colavita G. Lactobacilli infection case reports in the last three years and safety implications. Nutrients. 2022;14(6):1178. 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 Lactiplantibacillus Pentosus and Diphenhydramine Together: Common Questions

Is it safe to take Lactiplantibacillus Pentosus with Diphenhydramine?
We do not list a known interaction between Lactiplantibacillus Pentosus and Diphenhydramine. 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.
Are Lactiplantibacillus Pentosus and Diphenhydramine used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Lactiplantibacillus Pentosus in each. That is a conversation for your prescriber, especially if Diphenhydramine is being adjusted to a target.
How was the Lactiplantibacillus Pentosus and Diphenhydramine combination checked?
Interactions in our licensed database are recorded against drug classes. Diphenhydramine is filed under 7 classifications, and Lactiplantibacillus Pentosus has documented interactions with 1 drug class — none of Diphenhydramine's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Lactiplantibacillus Pentosus interact with any other medications?
Yes. Lactiplantibacillus Pentosus has 182 documented drug interactions in our database — Diphenhydramine is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Diphenhydramine interact with any supplements?
Yes. Diphenhydramine has documented interactions with 147 supplements in our database — Lactiplantibacillus Pentosus is not one of them. The Diphenhydramine 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

Lactiplantibacillus Pentosus monograph Uses, safety profile, and every drug interaction in one place Diphenhydramine drug information The full plain-English guide to this medication Diphenhydramine supplement interactions Every supplement checked against Diphenhydramine, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Diphenhydramine and Lactiplantibacillus Pentosus?

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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.