Drug & supplement interaction

Lactobacillus Crispatus + Brexpiprazole

Brexpiprazole brand name: Rexulti.

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 Lactobacillus Crispatus and Brexpiprazole 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 two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Lactobacillus Crispatus and Brexpiprazole

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 Brexpiprazole and Lactobacillus Crispatus 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.

Lactobacillus Crispatus safety at a glance

Lactobacillus Cris... overall Use caution Generally considered safe for healthy people, but quality and evidence vary by product.
Pregnancy Use caution Limited safety data; use only under the guidance of your doctor.
Breastfeeding Use caution Not well studied during breastfeeding; check with your doctor first.

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

Still wondering about combining Brexpiprazole and Lactobacillus Crispatus? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Brexpiprazole

Interactions in our licensed database are recorded against drug classes, not just single drug names. Brexpiprazole is filed under 8 classifications — including dopamine agonists, antipsychotic drugs, serotonergic drugs. Lactobacillus Crispatus has documented interactions with 1 drug class — the most serious being antibiotic drugs (moderate) — and none of Brexpiprazole’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

Lactobacillus Crispatus Does Interact With Other Medications

Lactobacillus Crispatus has 182 moderate known drug interactions in our database — Brexpiprazole 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. Brexpiprazole)
Taking anything else?

Check Another of Your Medications Against Lactobacillus Crispatus

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

What to actually watch for

No Interaction Found — But Data Suggests Lactobacillus Crispatus and Brexpiprazole May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on Additional detail

    Lactobacillus Crispatus

    “Orally, taking Lactobacillus crispatus has rarely caused a swollen tongue and epiglottis.

    Since Lactobacillus crispatus preparations contain live and active microorganisms, there is some concern that they might cause pathogenic infection in some patients.”

    Lactobacillus Crispatus · Natural Medicines adverse-effect record, reported in sepsis.

    6 sources cited
    1. 110945. DE Leo V, Lazzeri E, Governini L, et al. Vaginal colonization of women after oral administration of Lactobacillus crispatus strain NTCVAG04 from the human microbiota. Minerva Obstet Gynecol 2022. PubMed
    2. 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
    3. 110917. Ranchal P, Gupta R, Goldberg R, A Lobo S, Pascual A, El Khoury MY. Penicillin-sensitive Lactobacillus jensenii bacteremia. Am J Ther 2021;28(2):e250-e252. PubMed
    4. 110918. Grazioli-Gauthier L, Rigamonti E, Leo LA, Martinetti Lucchini G, Lo Priore E, Bernasconi E. Lactobacillus jensenii mitral valve endocarditis: Case report, literature review and new perspectives. IDCases 2022;27:e01401. PubMed
    5. 110920. Toprak NU, Bozan T, Yilmaz S, Buyukbayrak EE, Tigen ET. Polymicrobial bacteremia due to Lactobacillus jensenii and Veillonella montpellierensis in a pregnant patient; case report and review of literature. Anaerobe 2022;75:102576. PubMed
    6. 110921. Chazan B, Raz R, Shental Y, Sprecher H, Colodner R. Bacteremia and pyelonephritis caused by Lactobacillus jensenii in a patient with urolithiasis. Isr Med Assoc J 2008;10(2):164-5.

    Brexpiprazole

    Listed in the ADVERSE REACTIONS section of the FDA label for Brexpiprazole. Read the label on DailyMed ›

  • Bloating or gas / Nausea Additional detail

    Lactobacillus Crispatus

    “Orally, taking Lactobacillus crispatus has rarely caused nausea, gas, and flatulence in clinical research.”

    Lactobacillus Crispatus · Natural Medicines adverse-effect record, reported in flatulence.

    2 sources cited
    1. 110942. DI Pierro F, Criscuolo AA, Dei Giudici A, et al. Oral administration of Lactobacillus crispatus M247 to papillomavirus-infected women: results of a preliminary, uncontrolled, open trial. Minerva Obstet Gynecol 2021;73(5):621-631. PubMed
    2. 110946. Dellino M, Cascardi E, Laganà AS, et al. Lactobacillus crispatus M247 oral administration: Is it really an effective strategy in the management of papillomavirus-infected women?. Infect Agent Cancer 2022;17(1):53. PubMed

    Brexpiprazole

    Listed in the ADVERSE REACTIONS section of the FDA label for Brexpiprazole. Read the label on DailyMed ›

Effects for Brexpiprazole come from the ADVERSE REACTIONS section of its FDA label; effects for Lactobacillus Crispatus come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 16,505 voluntary FDA FAERS reports for Brexpiprazole that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Everything else you take

See Every Supplement That Interacts With Brexpiprazole

This page covers Lactobacillus Crispatus only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Brexpiprazole page lists 177 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), Indian Snakeroot (major), Lithium (major) and Rauvolfia Vomitoria (major).

By severity: 6 major · 130 moderate · 41 minor.

From our pharmacist’s overview on the Brexpiprazole page

“Brexpiprazole (Rexulti) treats schizophrenia and is added to antidepressants for depression, and its supplement list warrants real care before you add anything to it. The bulk of the 177 entries change how your liver clears the drug, so grapefruit can push levels up while St.”

Reviewed by 2 · Jul 18, 2026

Open the Brexpiprazole interaction page

One more smart check

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

We hold 48 real supplement products containing Lactobacillus Crispatus, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lactobacillus Crispatus. Even though Lactobacillus Crispatus itself has no known interaction with Brexpiprazole, 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 Lactobacillus Crispatus and Brexpiprazole 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 Lactobacillus Crispatus
Top half

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

29 days ago today
Medication Brexpiprazole
Top half

#983 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 Lactobacillus Crispatus reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Lactobacillus Crispatus and Brexpiprazole 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 Lactobacillus Crispatus

What is Lactobacillus Crispatus?

  • Vaginal health support
  • Preventing recurrent bacterial vaginosis
  • Reducing recurrent urinary tract infections
  • Yeast infection support
  • General microbiome balance

Lactobacillus crispatus is a 'good' bacterium that naturally dominates a healthy vaginal microbiome and is sold as a probiotic, mainly for vaginal and urinary health. Early research is promising for preventing recurrent bacterial vaginosis and urinary tract infections, but evidence is still limited and product quality varies. Talk with your pharmacist or doctor before using it, especially if you are pregnant or have a weakened immune system.

Lactobacillus crispatus · Lactobacillaceae · Live bacterial cells (probiotic strain) · Oral capsules, vaginal capsules or suppositories, powders, some yogurts and fermented foods

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

Lactobacillus Crispatus: dosing

There is no single standardized dose of Lactobacillus crispatus. Probiotic doses are usually measured in colony-forming units (CFU), and the right amount can vary by product and by why you are using it.The best approach is to follow the directions on the product label for the specific oral or vaginal product you have chosen.

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

Read the full Lactobacillus Crispatus monograph & all interactions
Medication

About Brexpiprazole

What Is Brexpiprazole Used For?

Brand name: Rexulti

Brexpiprazole tablets are approved for two uses in adults: as an add-on (adjunctive) treatment alongside antidepressants for major depressive disorder (MDD), and as a treatment for schizophrenia. These uses apply to both the generic brexpiprazole tablets and Rexulti.

Rexulti has one additional approved use: treating agitation associated with dementia due to Alzheimer's disease in adults. Rexulti is also approved for schizophrenia in adolescents ages 13 and older. Note that Rexulti is not approved for dementia-related psychosis without agitation from Alzheimer's disease, and it is not meant to be used on an as-needed basis for Alzheimer's-related agitation.

Most-Reported Side Effects for Brexpiprazole

From FAERS, the FDA’s public side-effect reporting system (16,505 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Weight increased 1,702 reports
Akathisia 869 reports
Tremor 654 reports
Anxiety 612 reports
Tardive dyskinesia 599 reports
See full Brexpiprazole drug information
Keep checking

Other Drugs & Lactobacillus Crispatus

Browse every other medication we’ve checked against Lactobacillus Crispatus — 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 Lactobacillus Crispatus page.

No interaction 2,647 drugs checked — show the list

We also checked Lactobacillus Crispatus 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 Lactobacillus Crispatus list.

See the full Lactobacillus Crispatus interactions page
See every supplement checked against Brexpiprazole, ranked by severity
Evidence & sources

Lactobacillus Crispatus References

The 9 references that drive our Lactobacillus Crispatus 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
  3. Ranchal P, Gupta R, Goldberg R, A Lobo S, Pascual A, El Khoury MY. Penicillin-sensitive Lactobacillus jensenii bacteremia. Am J Ther 2021;28(2):e250-e252. PubMed
  4. Grazioli-Gauthier L, Rigamonti E, Leo LA, Martinetti Lucchini G, Lo Priore E, Bernasconi E. Lactobacillus jensenii mitral valve endocarditis: Case report, literature review and new perspectives. IDCases 2022;27:e01401. PubMed
  5. Toprak NU, Bozan T, Yilmaz S, Buyukbayrak EE, Tigen ET. Polymicrobial bacteremia due to Lactobacillus jensenii and Veillonella montpellierensis in a pregnant patient; case report and review of literature. Anaerobe 2022;75:102576. PubMed
  6. Chazan B, Raz R, Shental Y, Sprecher H, Colodner R. Bacteremia and pyelonephritis caused by Lactobacillus jensenii in a patient with urolithiasis. Isr Med Assoc J 2008;10(2):164-5.
  7. DI Pierro F, Criscuolo AA, Dei Giudici A, et al. Oral administration of Lactobacillus crispatus M247 to papillomavirus-infected women: results of a preliminary, uncontrolled, open trial. Minerva Obstet Gynecol 2021;73(5):621-631. PubMed
  8. DE Leo V, Lazzeri E, Governini L, et al. Vaginal colonization of women after oral administration of Lactobacillus crispatus strain NTCVAG04 from the human microbiota. Minerva Obstet Gynecol 2022. PubMed
  9. Dellino M, Cascardi E, Laganà AS, et al. Lactobacillus crispatus M247 oral administration: Is it really an effective strategy in the management of papillomavirus-infected women?. Infect Agent Cancer 2022;17(1):53. 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 Lactobacillus Crispatus and Brexpiprazole Together: Common Questions

Is it safe to take Lactobacillus Crispatus with Brexpiprazole?
We do not list a known interaction between Lactobacillus Crispatus and Brexpiprazole. 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.
Do Lactobacillus Crispatus and Brexpiprazole have any of the same side effects?
Yes — our sources link each of them separately to 3 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Lactobacillus Crispatus and Brexpiprazole combination checked?
Interactions in our licensed database are recorded against drug classes. Brexpiprazole is filed under 8 classifications, and Lactobacillus Crispatus has documented interactions with 1 drug class — none of Brexpiprazole'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 Lactobacillus Crispatus interact with any other medications?
Yes. Lactobacillus Crispatus has 182 documented drug interactions in our database — Brexpiprazole 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 Brexpiprazole interact with any supplements?
Yes. Brexpiprazole has documented interactions with 177 supplements in our database — Lactobacillus Crispatus is not one of them. The Brexpiprazole 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

Lactobacillus Crispatus monograph Uses, safety profile, and every drug interaction in one place Brexpiprazole drug information The full plain-English guide to this medication Brexpiprazole supplement interactions Every supplement checked against Brexpiprazole, 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 9 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Brexpiprazole and Lactobacillus Crispatus?

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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.