Drug & supplement interaction

Greater Celandine + Cefaclor

Cefaclor brand names: Ceclor CD, Ceclor.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Greater Celandine and Cefaclor 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 Cefaclor states a food rule worth keeping to, and 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

Greater Celandine and Cefaclor

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 Cefaclor and Greater Celandine 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.

Greater Celandine safety at a glance

Greater Celandine overall Avoid Oral use has been linked to serious, sometimes severe liver damage.
Pregnancy Avoid Not enough safety data and known toxicity make it unsafe during pregnancy.
Breastfeeding Avoid No reliable safety information, so it is best avoided while breastfeeding.

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

Still wondering about combining Cefaclor and Greater Celandine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Cefaclor

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cefaclor is filed under 6 classifications — including organic anion transporter 3 (oat3) substrates, organic anion transporter 1 (oat1) substrates, antibiotic drugs. Greater Celandine has documented interactions with 4 drug classes — the most serious being cytochrome p450 2d6 (cyp2d6) substrates (moderate), hepatotoxic drugs (moderate) and immunosuppressants (moderate) — and none of Cefaclor’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

Greater Celandine Does Interact With Other Medications

Greater Celandine has 625 moderate known drug interactions in our database — Cefaclor isn’t one of them. If you take anything else, check it against the full list below.

Moderate 625 No known interaction 2,205 (incl. Cefaclor)
Taking anything else?

Check Another of Your Medications Against Greater Celandine

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

What to actually watch for

No Interaction Found — But Data Suggests Greater Celandine and Cefaclor 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. 3 of them are worth acting on rather than waiting out — marked below.

  • A low platelet count / Kidney problems Worth acting on Additional detail

    Greater Celandine

    “Orally, greater celandine extract has caused a single case of hemolytic anemia. This resulted in thrombocytopenia, destruction of liver cells, and kidney failure, requiring treatment.

    Intravenously, a derivative of the greater celandine constituent chelidonine (Ukrain) can cause bleeding.”

    Greater Celandine · Natural Medicines adverse-effect record, reported in anemia.

    3 sources cited
    1. 53508. Pinto, Garcia, V, Vicente, P. R., Barez, A., Soto, I., Candas, M. A., and Coma, A. [Hemolytic anemia induced by Chelidonium majus. Clinical case]. Sangre (Barc.) 1990;35(5):401-403.
    2. 13409. Ernst E, Schmidt K. Ukrain - a new cancer cure? A systematic review of randomised clinical trials. BMC Cancer 2005;5:69. PubMed
    3. 53460. Gansauge, F., Ramadani, M., Pressmar, J., Gansauge, S., Muehling, B., Stecker, K., Cammerer, G., Leder, G., and Beger, H. G. NSC-631570 (Ukrain) in the palliative treatment of pancreatic cancer. Results of a phase II trial. Langenbecks Arch.Surg. 2002;38 PubMed

    Cefaclor

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

  • Anemia Worth acting on Additional detail

    Greater Celandine

    “Orally, greater celandine has been implicated in dozens of cases of liver damage. Greater celandine can also cause rash. Greater celandine extract has caused a single case of hemolytic anemia.

    Topically, greater celandine can cause contact dermatitis.

    Intravenously, a derivative of the greater celandine constituent chelidonine (Ukrain) can cause gastrointestinal symptoms, increased body temperature, general burning s…”

    Greater Celandine · Natural Medicines adverse-effect record, reported in anemia.

    6 sources cited
    1. 363. Benninger J, Schneider HT, Schuppan D, et al. Acute hepatitis induced by greater celandine (Chelidonium majus). Gastroenterology 1999;117:1234-7. PubMed
    2. 13410. Stickel F, Poschl G, Seitz HK, et al. Acute hepatitis induced by Greater Celandine (Chelidonium majus). Scand J Gastroenterol 2003;38:565-8.
    3. 16839. Moro PA, Cassetti F, Giugliano G, et al. Hepatitis from greater celandine (Chelidonium majus L.): Review of literature and report of a new case. J Ethnopharmacol 2009;124:328-32. PubMed
    4. 41412. Stickel, F., Seitz, H. K., Hahn, E. G., and Schuppan, D. [Liver toxicity of drugs of plant origin]. Z.Gastroenterol. 2001;39(3):225-227.
    5. 53502. Hardeman, E., Van, Overbeke L., Ilegems, S., and Ferrante, M. Acute hepatitis induced by greater celandine (Chelidonium majus). Acta Gastroenterol.Belg. 2008;71(2):281-282.
    6. 53504. Gilca, M., Gaman, L., Panait, E., Stoian, I., and Atanasiu, V. Chelidonium majus--an integrative review: traditional knowledge versus modern findings. Forsch.Komplementmed. 2010;17(5):241-248. PubMed

    Cefaclor

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

  • Diarrhea / Nausea Additional detail

    Greater Celandine

    “Intravenously, a derivative of the greater celandine constituent chelidonine (Ukrain) can cause gastrointestinal symptoms, including obstipation, nausea, and diarrhea.”

    Greater Celandine · Natural Medicines adverse-effect record, reported in diarrhea.

    2 sources cited
    1. 13409. Ernst E, Schmidt K. Ukrain - a new cancer cure? A systematic review of randomised clinical trials. BMC Cancer 2005;5:69. PubMed
    2. 53460. Gansauge, F., Ramadani, M., Pressmar, J., Gansauge, S., Muehling, B., Stecker, K., Cammerer, G., Leder, G., and Beger, H. G. NSC-631570 (Ukrain) in the palliative treatment of pancreatic cancer. Results of a phase II trial. Langenbecks Arch.Surg. 2002;38 PubMed

    Cefaclor

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

  • A skin rash Additional detail

    Greater Celandine

    “Orally, greater celandine can cause rash. Topically, greater celandine can cause contact dermatitis.”

    Greater Celandine · Natural Medicines adverse-effect record, reported in dermatitis.

    2 sources cited
    1. 13410. Stickel F, Poschl G, Seitz HK, et al. Acute hepatitis induced by Greater Celandine (Chelidonium majus). Scand J Gastroenterol 2003;38:565-8.
    2. 13411. Etxenagusia MA, Anda M, Gonzalez-Mahave I, et al. Contact dermatitis from Chelidonium majus (greater celandine). Contact Dermatitis 2000;43:47.

    Cefaclor

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

Reported for Greater Celandine but not commonly for Cefaclor: liver problems, bleeding or bruising and yellowing of the skin or eyes.

Effects for Cefaclor come from the ADVERSE REACTIONS section of its FDA label; effects for Greater Celandine come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

How to take them

Some Cefaclor Products Have a Food Rule — Greater Celandine Should Not Break It

At least one FDA label for a product containing Cefaclor says to take it with food. If you take Greater Celandine on an empty stomach out of habit, keep them separate — and take Cefaclor with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Cefaclor 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.

DOSAGE AND ADMINISTRATION The absorption of cefaclor extended-release tablets is enhanced when it is administered with food.

From the Dosage and Administration section of the FDA label we read for Cefaclor — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

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 Cefaclor

This page covers Greater Celandine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cefaclor page lists 60 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Siberian Cocklebur (major), African Wild Potato (moderate) and Aristolochia (moderate).

By severity: 3 major · 46 moderate · 11 minor.

From our pharmacist’s overview on the Cefaclor page

“The entries worth understanding before any others on this cefaclor (Ceclor) page are the kidney risks and charcoal. Cefaclor is a cephalosporin antibiotic, typically a short course for ear, sinus, throat, or skin infections, and two herbs here, Siberian cocklebur and asarabacca, can damage the kidneys on their own, so pairing either wi…”

Reviewed by 2 · Jul 18, 2026

Open the Cefaclor interaction page

One more smart check

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

We hold 11 real supplement products containing Greater Celandine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Greater Celandine. Even though Greater Celandine itself has no known interaction with Cefaclor, 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 Greater Celandine and Cefaclor 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 Greater Celandine
Steady interest

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

29 days ago today
Medication Cefaclor
Top 10%

#196 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 Greater Celandine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Greater Celandine and Cefaclor 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 Greater Celandine

What is Greater Celandine?

Greater Celandine
  • Digestive and gallbladder complaints
  • Stomach cramps and bloating
  • Topical use for warts and skin growths
  • Liver and gallbladder 'cleansing'
  • Mild pain relief

Greater celandine is a traditional herb most often promoted for digestive and gallbladder complaints, but solid human evidence for any use is lacking. More importantly, it has been linked to serious and sometimes severe liver injury, so most experts advise against taking it by mouth. If you are considering it, talk with your pharmacist or doctor first.

Chelidonium majus · Papaveraceae · Aerial parts (leaves, stems, flowers), root, and the yellow-orange latex (sap) · Capsules, tinctures, dried herb for tea, liquid extracts, and topical preparations

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

Greater Celandine: dosing

There is no well-established, standardized safe dose for greater celandine. Products vary widely in how they are made and how much alkaloid they contain, which makes consistent dosing difficult.Given the documented risk of liver injury, we do not recommend a specific dose. If you choose to use a product despite these concerns, follow the directions on the label and do not exceed them.

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

Read the full Greater Celandine monograph & all interactions
Medication

About Cefaclor

What Is Cefaclor Used For?

Brand names: Ceclor CD, Ceclor

Cefaclor treats a range of bacterial infections. Cefaclor capsules and oral suspension are used for ear infections (otitis media), lower respiratory tract infections including pneumonia, strep throat and tonsillitis, urinary tract infections (including kidney infections and bladder infections), and skin and skin structure infections.

Cefaclor extended-release tablets are approved for a narrower set of uses in adults: acute bacterial flare-ups of chronic bronchitis, strep throat and tonsillitis, and uncomplicated skin and skin structure infections. Not all formulations are approved for the same conditions, so the form matters.

See full Cefaclor drug information
Keep checking

Other Drugs & Greater Celandine

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

0Major
625Moderate
0Minor
2,204No known interaction
625 Moderate 2,204 No interaction
Moderate

625 interactions

Showing 60 of 625 moderate interactions — see all 625 on the Greater Celandine page.

No interaction 2,204 drugs checked — show the list

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

Showing the 60 most looked-up of 2,204 medications checked with no known interaction — see the full Greater Celandine list.

See the full Greater Celandine interactions page
See every supplement checked against Cefaclor, ranked by severity
Evidence & sources

Greater Celandine References

The 25 references that drive our Greater Celandine 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. Benninger J, Schneider HT, Schuppan D, et al. Acute hepatitis induced by greater celandine (Chelidonium majus). Gastroenterology 1999;117:1234-7. PubMed
  2. Holtmann G, Madisch A, Juergen H, et al. A double-blind, randomized, placebo-controlled trial on the effects of an herbal preparation in patients with functional dyspepsia [Abstract]. Ann Mtg Digestive Disease Week 1999 May.
  3. Madisch A, Holtmann G, Mayr G, et al. Treatment of functional dyspepsia with a herbal preparation. A double-blind, randomized, placebo-controlled, multicenter trial. Digestion 2004;69:45-52. PubMed
  4. Melzer J, Rosch W, Reichling J, et al. Meta-analysis: phytotherapy of functional dyspepsia with the herbal drug preparation STW 5 (Iberogast). Aliment Pharmacol Ther 2004;20:1279-87. PubMed
  5. Ernst E, Schmidt K. Ukrain - a new cancer cure? A systematic review of randomised clinical trials. BMC Cancer 2005;5:69. PubMed
  6. Stickel F, Poschl G, Seitz HK, et al. Acute hepatitis induced by Greater Celandine (Chelidonium majus). Scand J Gastroenterol 2003;38:565-8.
  7. Etxenagusia MA, Anda M, Gonzalez-Mahave I, et al. Contact dermatitis from Chelidonium majus (greater celandine). Contact Dermatitis 2000;43:47.
  8. Panzer A, Joubert AM, Bianchi PC, Seegers JC. The antimitotic effects of Ukrain, a Chelidonium majus alkaloid derivative, are reversible in vitro. Cancer Lett 2000;150:85-92. PubMed
  9. Moro PA, Cassetti F, Giugliano G, et al. Hepatitis from greater celandine (Chelidonium majus L.): Review of literature and report of a new case. J Ethnopharmacol 2009;124:328-32. PubMed
  10. Stickel, F., Seitz, H. K., Hahn, E. G., and Schuppan, D. [Liver toxicity of drugs of plant origin]. Z.Gastroenterol. 2001;39(3):225-227.
  11. Gansauge, F., Ramadani, M., Pressmar, J., Gansauge, S., Muehling, B., Stecker, K., Cammerer, G., Leder, G., and Beger, H. G. NSC-631570 (Ukrain) in the palliative treatment of pancreatic cancer. Results of a phase II trial. Langenbecks Arch.Surg. 2002;38 PubMed
  12. Nowicky, J. W., Manolakis, G., Meijer, D., Vatanasapt, V., and Brzosko, W. J. Ukrain both as an anti cancer and immunoregulatory agent. Drugs Exp.Clin Res 1992;18 Suppl:51-54.
  13. Staniszewski, A., Slesak, B., Kolodziej, J., Harlozinska-Szmyrka, A., and Nowicky, J. W. Lymphocyte subsets in patients with lung cancer treated with thiophosphoric acid alkaloid derivatives from Chelidonium majus L. (Ukrain). Drugs Exp.Clin Res 1992;18
  14. Nowicky, J. W., Staniszewski, A., Zbroja-Sontag, W., Slesak, B., Nowicky, W., and Hiesmayr, W. Evaluation of thiophosphoric acid alkaloid derivatives from Chelidonium majus L. ("Ukrain") as an immunostimulant in patients with various carcinomas. Drugs Ex
  15. Gansauge, F., Ramadani, M., Schwarz, M., Beger, H. G., Lotspeich, E., and Poch, B. The clinical efficacy of adjuvant systemic chemotherapy with gemcitabine and NSC-631570 in advanced pancreatic cancer. Hepatogastroenterology 2007;54(75):917-920.

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 Greater Celandine and Cefaclor Together: Common Questions

Is it safe to take Greater Celandine with Cefaclor?
We do not list a known interaction between Greater Celandine and Cefaclor. 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 Greater Celandine and Cefaclor have any of the same side effects?
Yes — our sources link each of them separately to 6 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.
Should I take Greater Celandine and Cefaclor at the same time of day?
At least one FDA label for a product containing Cefaclor says to take it with food. If you take Greater Celandine on an empty stomach out of habit, keep them separate and take Cefaclor with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Cefaclor products can differ — so check the directions on your own box. This is about absorption, not an interaction.
How was the Greater Celandine and Cefaclor combination checked?
Interactions in our licensed database are recorded against drug classes. Cefaclor is filed under 6 classifications, and Greater Celandine has documented interactions with 4 drug classes — none of Cefaclor'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 Greater Celandine interact with any other medications?
Yes. Greater Celandine has 625 documented drug interactions in our database — Cefaclor 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 Cefaclor interact with any supplements?
Yes. Cefaclor has documented interactions with 60 supplements in our database — Greater Celandine is not one of them. The Cefaclor 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

Greater Celandine monograph Uses, safety profile, and every drug interaction in one place Cefaclor drug information The full plain-English guide to this medication Cefaclor supplement interactions Every supplement checked against Cefaclor, 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 25 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cefaclor and Greater Celandine?

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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.