Quercetin + Avibactam Sodium, Ceftazidime
Avibactam Sodium, Ceftazidime brand name: Avycaz.
Avibactam Sodium, Ceftazidime falls into 2 drug categories that Quercetin can interact with; the most serious is rated moderate. Theoretically, concomitant use might increase the effects and adverse effects of OAT3 substrates.
Read the full interaction reportQuercetin and Avibactam Sodium, Ceftazidime
These two interact in 2 distinct ways. Each one is explained separately below.
Why Are There 2 Interactions?
Quercetin interacts with whole categories of medication. Avibactam Sodium, Ceftazidime falls into 2 of those categories, so it can interact with Quercetin in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).
ORGANIC ANION TRANSPORTER 3 (OAT3) SUBSTRATES
1 of 2Why this applies to Avibactam Sodium, Ceftazidime
Avibactam Sodium, Ceftazidime falls under ORGANIC ANION TRANSPORTER 3 (OAT3) SUBSTRATES — the group Quercetin interacts with.
In vitro research shows that quercetin is a strong non-competitive inhibitor of OAT3, with half-maximal inhibitory concentration (IC50) values as low as 0.75 mcM. So far, this interaction has not been reported in humans.
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.
Here's the simple version. Your kidneys use little 'pumps' (one is called OAT3) to clear ceftazidime and avibactam out of your body through your urine. In lab dish studies, quercetin blocks that OAT3 pump fairly strongly. If those pumps slow down, the antibiotic could leave your body more slowly and build up a bit higher than expected.
If that happened, you might notice more of the usual side effects, like nausea, diarrhea, or headache. I want to be honest, though: this is only a theoretical concern from test-tube research, and it has never been reported in real people. Everyday food amounts of quercetin are very unlikely to matter. Since Avycaz is usually a short hospital IV course, just let your care team or pharmacist know about any high-dose quercetin supplements.
- Li C, Wang X, Bi Y, et al. Potent Inhibitors of Organic Anion Transporters 1 and 3 From Natural Compounds and Their Protective Effect on Aristolochic Acid Nephropathy. Toxicol Sci. 2020;175(2):279-291. PubMed
- Ni Y, Duan Z, Zhou D, et al. Identification of Structural Features for the Inhibition of OAT3-Mediated Uptake of Enalaprilat by Selected Drugs and Flavonoids. Front Pharmacol. 2020;11:802. PubMed
ORGANIC ANION TRANSPORTER 1 (OAT1) SUBSTRATES
2 of 2Avibactam Sodium, Ceftazidime also falls under ORGANIC ANION TRANSPORTER 1 (OAT1) SUBSTRATES.
In vitro research shows that quercetin is a strong non-competitive inhibitor of OAT1, with half-maximal inhibitory concentration (IC50) values less than 10 mcM. So far, this interaction has not been reported in humans.
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.
Here's the gist: your kidneys use a little transporter called OAT1 to push ceftazidime and avibactam out into your urine. In lab dish studies, quercetin blocks that transporter. If the same thing happened in people, the antibiotic might leave your body a bit slower and build up, which could mean stronger effects and a higher chance of side effects like nausea, diarrhea, headache, or irritation where the IV goes in.
I want to be honest about how soft this evidence is. It comes only from test-tube work and has never actually been reported in a real patient. Food amounts of quercetin almost certainly don't matter, and this drug is given in the hospital where you're watched closely. Still, if you take high-dose quercetin supplements, mention it to your care team.
- Ni Y, Duan Z, Zhou D, et al. Identification of Structural Features for the Inhibition of OAT3-Mediated Uptake of Enalaprilat by Selected Drugs and Flavonoids. Front Pharmacol. 2020;11:802. PubMed
What These Ratings Mean
Every interaction above is graded three ways — here’s the key to each label.
Clinically significant. Avoid the combination, or use only under close professional supervision.
Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.
Generally not serious. Be aware of it and mention it to your pharmacist.
- 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.
- 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.
Quercetin Also Interacts With Other Medications
Quercetin has 1,168 moderate known drug interactions in our database — the Avibactam Sodium, Ceftazidime one above is among them. If you take anything else, check it against the full list below.
Check Another of Your Medications Against Quercetin
We haven’t checked that one against Quercetin yet — ask our pharmacists directly.
Covers the 2,830 medications we’ve checked against Quercetin. Pick one to open its full report.
See Every Supplement That Interacts With Avibactam Sodium, Ceftazidime
This page covers Quercetin only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Avibactam Sodium, Ceftazidime page lists 37 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: African Wild Potato (moderate), Bacillus Coagulans (moderate), Bacillus Subtilis (moderate), Banderol (moderate) and Bifidobacterium Animalis Subsp. Lactis (moderate).
By severity: 36 moderate · 1 minor.
From our pharmacist’s overview on the Avibactam Sodium, Ceftazidime page
“Avycaz, the combination of ceftazidime and avibactam, is an intravenous antibiotic for serious infections, and its supplement list is calmer than that setting might suggest. None of the 37 ingredients on file carries a major rating; 36 are moderate and one is minor.”
Reviewed by 2 · Jul 18, 2026
Taking Quercetin as Part of a Dietary Supplement Product? Check It for Interactions
We hold 4,589 real supplement products containing Quercetin, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Quercetin. Your product may carry other ingredients that interact with Avibactam Sodium, Ceftazidime too, on top of Quercetin — and those would not show on this page. Find your product and we’ll check every ingredient on its label:
Where Quercetin and Avibactam Sodium, Ceftazidime 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.
#47 of 1,452 supplements looked up here in the last 7 days
#2,726 of 2,830 medications looked up here in the last 7 days
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.
About Quercetin
What is Quercetin?
- Seasonal allergies
- Antioxidant support
- Heart and blood pressure health
- Anti-inflammatory support
- Immune support
- Exercise recovery
Quercetin is a plant flavonoid with antioxidant and anti-inflammatory properties found in many common foods and sold as a supplement. While early research is interesting for allergies, blood pressure, and inflammation, strong human evidence is limited for most uses. It is generally well tolerated in food amounts, but talk to your pharmacist or doctor before taking high-dose supplements.
About Ceftazidime and Avibactam Injection
What Is Ceftazidime and Avibactam Injection Used For?
Brand name: Avycaz
Avycaz (ceftazidime and avibactam) is used to treat three types of serious bacterial infections in adults and children at least 31 weeks gestational age: complicated intra-abdominal infections (cIAI), complicated urinary tract infections (cUTI) including pyelonephritis (a kidney infection), and hospital-acquired bacterial pneumonia or ventilator-associated bacterial pneumonia (HABP/VABP). All three of these infections must be caused by specific susceptible gram-negative bacteria for Avycaz to be effective.
When treating complicated intra-abdominal infections, Avycaz must be used together with metronidazole, another antibiotic. Avycaz is only meant for infections proven or strongly suspected to be caused by bacteria that it can actually fight — using it otherwise can lead to antibiotic resistance.
Other Drugs & Quercetin
Browse every other medication we’ve checked against Quercetin — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
1,168 interactions
- Diclofenac Sodium ›
- Diltiazem ›
- Nifedipine ›
- Ibuprofen ›
- Aspirin ›
- Hydrocortisone ›
- Insulin (rdna) ›
- Naproxen ›
- Doxycycline ›
- Erythromycin ›
- Estradiol ›
- Minocycline ›
- Propranolol ›
- Tetracycline ›
- Lidocaine ›
- Ranitidine ›
- Hydrochlorothiazide ›
- Norethindrone ›
- Testosterone ›
- Verapamil ›
- Levonorgestrel ›
- Prednisone ›
- Quinidine ›
- Cyclosporine ›
- Dexamethasone ›
- Glyburide ›
- Insulin (pork) ›
- Triazolam ›
- Zopiclone ›
- Ciprofloxacin ›
- Colchicine ›
- Fentanyl ›
- Flurbiprofen ›
- Isotretinoin ›
- Oxybutynin ›
- Oxycodone ›
- Phenytoin ›
- Prednisolone ›
- Tacrolimus ›
- Temazepam ›
- Triamcinolone ›
- Apomorphine ›
- Budesonide ›
- Carbamazepine ›
- Ceftazidime ›
- Clindamycin ›
- Dextromethorphan ›
- Diclofenac Potassium ›
- Doxorubicin ›
- Fluticasone ›
- Formoterol ›
- Hydralazine ›
- Indomethacin ›
- Insulin (human) ›
- Miconazole ›
- Morphine Sulfate ›
- Salsalate ›
- Trimipramine ›
- Acyclovir ›
- Amphetamine ›
Showing 60 of 1,168 moderate interactions — see all 1,168 on the Quercetin page.
No interaction 1,661 drugs checked — show the list
We also checked Quercetin against these medications and found no known interaction in our sources. Open any page to confirm.
- Levothyroxine ›
- Methylphenidate ›
- Rosuvastatin ›
- Escitalopram ›
- Acetaminophen ›
- Docusate ›
- Hydroxyurea ›
- Sumatriptan ›
- Bupropion ›
- Amoxicillin ›
- Bendamustine ›
- Lamotrigine ›
- Pregabalin ›
- Gabapentin ›
- Azithromycin ›
- Methylene Blue ›
- Levothyroxine, Liothyronine ›
- Cyclopentolate ›
- Acetaminophen, Dextromethorphan, Doxylamine ›
- Roxithromycin ›
- Pegunigalsidase Alfa-iwxj ›
- Daptomycin ›
- Dexmethylphenidate ›
- Hexobarbitone ›
- Levothyroxine Sodium ›
- Levetiracetam ›
- Phentermine, Topiramate ›
- Factor 7a ›
- Thyroid Hormone ›
- Carbidopa, Levodopa ›
- Levodopa ›
- Mitomycin ›
- Lenvatinib ›
- Ezetimibe ›
- Hethylphenidate Hcl ›
- Phenylephrine ›
- Vancomycin ›
- Bentoquatam ›
- Tenecteplase ›
- Amoxicillin, Clavulanate Potassium ›
- Pentobarbitone ›
- Hydroxychloroquine ›
- Dirithromycin ›
- Triptorelin ›
- Pizotifen ›
- Procainamide ›
- Tocainide ›
- Azelaic Acid ›
- Sodium Valproate ›
- Dextrothyroxine ›
- Lomustine ›
- Rocuronium ›
- Mitomycin C ›
- Lorazepam ›
- Paracetamol ›
- Chenodiol ›
- Desflurane ›
- Gestodene ›
- Digitoxin ›
- Succimer ›
Showing the 60 most looked-up of 1,661 medications checked with no known interaction — see the full Quercetin list.
Sources & How We Checked
Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference for vitamins, herbs and supplements — the basis for our interaction data.
- MedlinePlus, U.S. National Library of Medicine — NIH consumer drug information, used for the medication overviews.
- NIH Dietary Supplement Label Database (DSLD) — Official supplement product labels.
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
Avibactam Sodium, Ceftazidime Is Linked to Lower Levels of 7 Nutrients
Natural Medicines records Avibactam Sodium, Ceftazidime as a medicine that can lower these. This is not an interaction with Quercetin — it is a separate effect of the medicine, and it is a reason some people are advised to supplement rather than to avoid one:
Read the full Avibactam Sodium, Ceftazidime nutrient depletion report ›
Depletion records come from the licensed Natural Medicines database. Do not start a supplement on the strength of this page — ask your pharmacist or doctor whether it applies to you.
Taking Quercetin and Avibactam Sodium, Ceftazidime Together: Common Questions
Can you take Quercetin with Avibactam Sodium, Ceftazidime?
Why are there 2 interactions listed for Quercetin and Avibactam Sodium, Ceftazidime?
How serious is the Quercetin and Avibactam Sodium, Ceftazidime interaction?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Still Have a Question About Avibactam Sodium, Ceftazidime and Quercetin?
Our pharmacists answer your medication & supplement questions — free.
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.