Drug & supplement interaction

Turmeric + Norfloxacin

Norfloxacin brand names: Norflox, Noroxin.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Norfloxacin falls into 3 drug categories that Turmeric can interact with; the most serious is rated moderate. Theoretically, turmeric might increase the risk of liver damage when taken with hepatotoxic drugs.

Read the full interaction report
SeverityModerate
LikelihoodPossible
Interactions3
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Turmeric and Norfloxacin

These two interact in 3 distinct ways. Each one is explained separately below.

Why Are There 3 Interactions?

Turmeric interacts with whole categories of medication. Norfloxacin falls into 3 of those categories, so it can interact with Turmeric in 3 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

HEPATOTOXIC DRUGS

1 of 3

Why this applies to Norfloxacin

Norfloxacin falls under HEPATOTOXIC DRUGS — the group Turmeric interacts with.

Theoretically, turmeric might increase the risk of liver damage when taken with hepatotoxic drugs.
There is concern that turmeric might cause hepatotoxicity, especially when highly bioavailable formulations are used in high doses.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the simple version: both turmeric and norfloxacin, an antibiotic in the fluoroquinolone family, are processed by your liver. On rare occasions, each one alone has been linked to liver irritation. The worry is that pairing them might add a little extra stress on the liver. This isn't a strong, well-proven interaction. It's mostly theoretical and based on scattered case reports, especially with high-dose, highly absorbable curcumin products rather than the turmeric you sprinkle on food.

For most people taking norfloxacin for a short course, normal cooking amounts of turmeric aren't a concern. If you take concentrated turmeric capsules, mention it to your pharmacist or doctor. And watch for signs of liver trouble like yellowing skin or eyes, dark urine, belly pain, or unusual tiredness.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Lombardi N, Crescioli G, Maggini V, et al. Acute liver injury following turmeric use in Tuscany: an analysis of the Italian Phytovigilance database and systematic review of case reports. Br J Clin Pharmacol. 2020. PubMed
  2. Sohal A, Alhankawi D, Sandhu S, Chintanaboina J. Turmeric-induced hepatotoxicity: Report of 2 cases. Int Med Case Rep J 2021;14:849-852. PubMed
  3. 109288 Halegoua-DeMarzio D, Navarro V, Ahmad J, et al. Liver injury associated with turmeric-A growing problem: Ten cases from the drug-induced liver injury network [DILIN]. Am J Med. 2022:S0002-9343(22)00740-9. PubMed
  4. Arzallus T, Izagirre A, Castiella A, Torrente S, Garmendia M, Zapata EM. Drug induced autoimmune hepatitis after turmeric intake. Gastroenterol Hepatol 2023. PubMed
Moderate

ORGANIC ANION-TRANSPORTING POLYPEPTIDE SUBSTRATES (OATP)

2 of 3

Norfloxacin also falls under ORGANIC ANION-TRANSPORTING POLYPEPTIDE SUBSTRATES (OATP).

Theoretically, turmeric might increase blood levels of OATP4C1 substrates.
In vitro research shows that the turmeric constituent curcumin competitively inhibits OATP4C1 transport. This transporter is expressed in the kidney and facilitates the renal excretion of certain drugs. Theoretically, taking turmeric might decrease renal excretion of OATP substrates.
Severity Moderate Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the gist with norfloxacin, a fluoroquinolone antibiotic your kidneys help clear out. Lab research suggests curcumin (the active part of turmeric) can block a kidney transporter called OATP4C1, which normally helps shuttle certain drugs into your urine. If that pathway slows down, a drug like norfloxacin could, in theory, hang around in your blood a little longer and at higher levels. That might mean a bit more chance of typical side effects like nausea, headache, dizziness, or tendon and nerve issues.

But here's the honest part: this is based only on test-tube data, not real people, so we don't truly know if it matters. Everyday turmeric in cooking is very unlikely to be a problem. If you take concentrated curcumin capsules, just mention it to your pharmacist or doctor.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Sato T, Yagi A, Yamauchi M, et al. The use of an antioxidant enables accurate evaluation of the interaction of curcumin on organic anion-transporting polypeptides 4C1 by preventing auto-oxidation. Int J Mol Sci 2024;25(2):991. PubMed
Minor

NORFLOXACIN (Noroxin)

3 of 3
Theoretically, turmeric might increase the effects and adverse effects of norfloxacin.
Animal research shows that taking curcumin, a turmeric constituent, can increase blood levels of orally administered norfloxacin.
Severity Minor Likelihood Possible Evidence D

Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the gist with turmeric and norfloxacin: norfloxacin is an antibiotic that works as-is (it's not a prodrug), so anything that raises its blood levels tends to boost both its effects and its side effects. In animal studies, curcumin from turmeric nudged norfloxacin levels upward. If that carried over to people, you might see a bit more of the usual norfloxacin side effects, like nausea, stomach upset, headache, or dizziness.

I want to be honest about the strength here, though. This is a theoretical, lab-and-animal-only concern rated as minor, so it's far from a sure thing. Everyday turmeric in food is very unlikely to matter. If you're taking a concentrated curcumin supplement alongside your antibiotic, just give your pharmacist or doctor a quick heads-up before changing anything.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Pavithra, B. H., Prakash, N., and Jayakumar, K. Modification of pharmacokinetics of norfloxacin following oral administration of curcumin in rabbits. J Vet.Sci. 2009;10(4):293-297. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Turmeric Also Interacts With Other Medications

Turmeric has 1,055 moderate, 77 minor known drug interactions in our database — the Norfloxacin one above is among them. If you take anything else, check it against the full list below.

Moderate 1,055 Minor 77 No known interaction 1,698 (incl. Norfloxacin)
Taking anything else?

Check Another of Your Medications Against Turmeric

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

From our Q&A

Questions About Turmeric or Norfloxacin

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Turmeric or Norfloxacin, 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 Norfloxacin

This page covers Turmeric only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Norfloxacin page lists 150 supplements it has a documented interaction with, worst first, each one explained.

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

By severity: 8 major · 122 moderate · 20 minor.

From our pharmacist’s overview on the Norfloxacin page

“The major entries on this page are the ones to understand first. With norfloxacin, a fluoroquinolone antibiotic usually prescribed for urinary tract infections, the biggest risks don't add side effects, they stop the drug from working.”

Reviewed by 2 · Jul 18, 2026

Open the Norfloxacin interaction page

One more smart check

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

We hold 1,368 real supplement products containing Turmeric, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Turmeric. Your product may carry other ingredients that interact with Norfloxacin too, on top of Turmeric — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Turmeric and Norfloxacin 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 Turmeric
Top 5%

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

29 days ago today
Medication Norfloxacin
Steady interest

#2,166 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.

Supplement

About Turmeric

What is Turmeric?

Turmeric
  • Joint pain and arthritis
  • Inflammation
  • Digestive upset
  • Antioxidant support
  • Skin conditions

Turmeric is a popular spice whose main active compounds, curcuminoids, are studied mostly for inflammation and joint pain. Some research is promising, but quality is mixed and curcumin is poorly absorbed on its own. For most people, dietary amounts are safe, but talk to your pharmacist or doctor before taking concentrated supplements, especially if you are pregnant, nursing, or have a medical condition.

Read the full Turmeric monograph & all interactions
Keep checking

Other Drugs & Turmeric

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

0Major
1,055Moderate
77Minor
1,697No known interaction
1,055 Moderate 77 Minor 1,697 No interaction
Moderate

1,055 interactions

Showing 60 of 1,055 moderate interactions — see all 1,055 on the Turmeric page.

Minor

77 interactions

Showing 60 of 77 minor interactions — see all 77 on the Turmeric page.

No interaction 1,697 drugs checked — show the list

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

Showing the 60 most looked-up of 1,697 medications checked with no known interaction — see the full Turmeric list.

See the full Turmeric interactions page
See every supplement checked against Norfloxacin, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

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

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
Turmeric monograph › Uses, safety, and every drug interaction in one place Norfloxacin supplement interactions › Every supplement checked against Norfloxacin, 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 Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Turmeric and Norfloxacin Together: Common Questions

Can you take Turmeric with Norfloxacin?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
Why are there 3 interactions listed for Turmeric and Norfloxacin?
Norfloxacin belongs to more than one drug category, and Turmeric interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Turmeric and Norfloxacin interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Norfloxacin and Turmeric?

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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.