Drug & supplement interaction

White Hellebore + Allopurinol

Allopurinol brand names: Zyloprim, Caplenal, Cosuric, Rimapurinol, Zyloric.

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 White Hellebore and Allopurinol 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

White Hellebore and Allopurinol

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 Allopurinol and White Hellebore 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.

Worth understanding: our licensed dataset holds no drug-interaction record for White Hellebore at all — not against Allopurinol, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

White Hellebore safety at a glance

White Hellebore overall Avoid The plant is highly poisonous and can cause life-threatening heart and nerve problems.
Pregnancy Likely Unsafe When used orally or topically because it could be teratogenic; avoid using. Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally or topically; avoid using. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Allopurinol and White Hellebore? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests White Hellebore and Allopurinol 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.

  • Muscle weakness Worth acting on Additional detail

    White Hellebore

    “Orally and topically, white hellebore is generally regarded as unsafe for any use. Any benefits of therapy do not outweigh the risk of toxicity.

    Most Common Adverse Effects:

    Orally: Abdominal pain, blurred vision, bradycardia, confusion, headache, hypotension, nausea, muscle weakness, vomiting.

    Topically: Skin irritation.

    Serious Adverse Effects (Rare):

    Orally: Arrythmias, blindness, gastric erosion, loss of consciou…”

    White Hellebore · Natural Medicines adverse-effect record, reported in cluster headache.

    Allopurinol

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

  • A slow heartbeat Worth acting on Additional detail

    White Hellebore

    “Orally, white hellebore can cause bradycardia, and hypotension. Large doses of white hellebore can cause more severe bradycardia and hypotension and even cardiac arrythmias (6,553,95892,95893,101431,109467,115960).”

    White Hellebore · Natural Medicines adverse-effect record, reported in hypotension.

    6 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 553. Jaspersen-Schib R, Theus L, Guirguis-Oeschger M, et al. [Serious plant poisonings in Switzerland 1966-1994. Case analysis from the Swiss Toxicology Information Center]. Schweiz Med Wochenschr 1996;126:1085-98.
    3. 95892. Grobosch T, Binscheck T, Martens F, Lampe D. Accidental intoxication with Veratrum album. J Anal Toxicol. 2008;32(9):768-73. PubMed
    4. 95893. Rauber-Lüthy C, Halbsguth U, Kupferschmidt H, et al. Low-dose exposure to Veratrum album in children causes mild effects--a case series. Clin Toxicol (Phila). 2010;48(3):234-7.
    5. 101431. Gilotta I, Brvar M. Accidental poisoning with Veratrum album mistaken for wild garlic (Allium ursinum). Clin Toxicol (Phila). 2010;48(9):949-52.
    6. 109467. Melnik EV, Belova MV, Potskhveriya MM, Simonova AY, Tyurin IA, Ramenskaya GV. Veratrum alkaloid determination in four cases of Veratrum aqua poisonings. J Anal Toxicol 2022;46(1):e42-e47.

    Allopurinol

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

  • Confusion Worth acting on Additional detail

    White Hellebore

    “Orally, white hellebore is toxic and can cause vertigo, confusion, numbness, headache, paresthesia, seizures, loss of consciousness, and shock.”

    White Hellebore · Natural Medicines adverse-effect record, reported in cluster headache.

    3 sources cited
    1. 553. Jaspersen-Schib R, Theus L, Guirguis-Oeschger M, et al. [Serious plant poisonings in Switzerland 1966-1994. Case analysis from the Swiss Toxicology Information Center]. Schweiz Med Wochenschr 1996;126:1085-98.
    2. 101431. Gilotta I, Brvar M. Accidental poisoning with Veratrum album mistaken for wild garlic (Allium ursinum). Clin Toxicol (Phila). 2010;48(9):949-52.
    3. 95893. Rauber-Lüthy C, Halbsguth U, Kupferschmidt H, et al. Low-dose exposure to Veratrum album in children causes mild effects--a case series. Clin Toxicol (Phila). 2010;48(3):234-7.

    Allopurinol

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

  • A stuffy or runny nose Additional detail

    White Hellebore

    “Orally, white hellebore is toxic and can cause respiratory depression in large doses (6,101431).

    By inhalation, the powdered root induces violent sneezing and runny nose (6).”

    White Hellebore · Natural Medicines adverse-effect record, reported in depression.

    2 sources cited
    1. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    2. 101431. Gilotta I, Brvar M. Accidental poisoning with Veratrum album mistaken for wild garlic (Allium ursinum). Clin Toxicol (Phila). 2010;48(9):949-52.

    Allopurinol

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

  • Numbness or tingling / Dizziness Additional detail

    White Hellebore

    Recorded for White Hellebore in the same Natural Medicines adverse-effect record shown under Confusion above.

    Allopurinol

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

  • Stomach pain / Vomiting / Nausea Additional detail

    White Hellebore

    “Orally, white hellebore is toxic and usually causes nausea, vomiting, and abdominal pain. Symptoms occur 15-30 minutes after ingestion. White hellebore can also cause a burning sensation in the upper abdomen, hypersalivation, and gastric erosion (6,553).”

    White Hellebore · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    6 sources cited
    1. 553. Jaspersen-Schib R, Theus L, Guirguis-Oeschger M, et al. [Serious plant poisonings in Switzerland 1966-1994. Case analysis from the Swiss Toxicology Information Center]. Schweiz Med Wochenschr 1996;126:1085-98.
    2. 95893. Rauber-Lüthy C, Halbsguth U, Kupferschmidt H, et al. Low-dose exposure to Veratrum album in children causes mild effects--a case series. Clin Toxicol (Phila). 2010;48(3):234-7.
    3. 101431. Gilotta I, Brvar M. Accidental poisoning with Veratrum album mistaken for wild garlic (Allium ursinum). Clin Toxicol (Phila). 2010;48(9):949-52.
    4. 109467. Melnik EV, Belova MV, Potskhveriya MM, Simonova AY, Tyurin IA, Ramenskaya GV. Veratrum alkaloid determination in four cases of Veratrum aqua poisonings. J Anal Toxicol 2022;46(1):e42-e47.
    5. 115960. Taldaev A, Terekhov RP, Melnik EV, et al. Insights into the Cardiotoxic Effects of Veratrum Lobelianum Alkaloids: Pilot Study. Toxins (Basel) 2022;14(7):490. PubMed
    6. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.

    Allopurinol

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

  • Headache Additional detail

    White Hellebore

    Recorded for White Hellebore in the same Natural Medicines adverse-effect record shown under Muscle weakness above.

    Allopurinol

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

Reported for White Hellebore but not commonly for Allopurinol: fainting, blurred vision, low blood pressure and loss of vision.

Effects for Allopurinol come from the ADVERSE REACTIONS section of its FDA label; effects for White Hellebore 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.

Special populations

White Hellebore in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally or topically because it could be teratogenic; avoid using.

Lactation Likely Unsafe

When used orally or topically; avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Everything else you take

See Every Supplement That Interacts With Allopurinol

This page covers White Hellebore only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Allopurinol 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), Beer (major), Siberian Cocklebur (major) and Wine (major).

By severity: 5 major · 45 moderate · 10 minor.

From our pharmacist’s overview on the Allopurinol page

“Allopurinol (Zyloprim) prevents gout attacks by lowering uric acid, and I would give this list real weight, because 5 of the 60 supplements and herbs on file carry a major rating. The largest cluster, 38 ingredients, is products that can stress the liver on their own, and regular beer or wine sits in that major group, since alcohol on…”

Reviewed by 2 · Jul 18, 2026

Open the Allopurinol interaction page

One more smart check

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

We hold 2 real supplement products containing White Hellebore, each one broken down to its full ingredient list — and combination products often carry several ingredients besides White Hellebore. Even though White Hellebore itself has no known interaction with Allopurinol, 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 White Hellebore and Allopurinol 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 White Hellebore
Steady interest

#1,127 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Allopurinol
Top 25%

#664 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 White Hellebore reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The White Hellebore and Allopurinol records this page draws on were last updated July 11, 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 White Hellebore

What is White Hellebore?

  • Homeopathic remedy for nausea and diarrhea
  • Traditional use for high blood pressure (historical)
  • Folk use as an emetic
  • Insecticide and pesticide use
  • Topical preparations for skin and lice (historical)

White Hellebore (Veratrum album) is a highly toxic plant that contains powerful compounds that can dangerously affect the heart and nervous system. It is not a safe dietary supplement, and the only forms with any history of safe human use are extremely dilute homeopathic preparations. Do not consume any raw or concentrated form of this plant.

Veratrum album · Melanthiaceae · Roots and rhizomes (historically); occasional use of dried plant material · Historically used in homeopathic dilutions and topical preparations; rarely sold as a modern supplement

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

White Hellebore: dosing

There is no established safe dose of White Hellebore for use as a supplement, and we do not recommend taking it. The plant is toxic, and the margin between any traditional "dose" and a poisonous one is very small.The only forms with a history of human use are extremely dilute homeopathic preparations, which contain little or no measurable plant material.

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

Read the full White Hellebore monograph & all interactions
Medication

About Allopurinol

What Is Allopurinol Used For?

Brand names: Zyloprim, Caplenal, Cosuric, Rimapurinol, Zyloric

Allopurinol tablets (including Zyloprim) are used in adults to treat the signs and symptoms of gout — including gout attacks, tophi (uric acid deposits), joint damage, and kidney problems caused by uric acid. Allopurinol tablets are also used in adults to reduce recurrent calcium oxalate kidney stones when uric acid in the urine is too high, even after lifestyle changes.

For adults and children with leukemia, lymphoma, or solid tumor cancers, allopurinol is used to control uric acid levels that rise during cancer treatment. The injectable forms — Allopurinol sodium for injection and Aloprim — are specifically for patients who cannot take medicine by mouth and are given intravenously (through a vein) in a hospital or clinical setting. Note: allopurinol tablets are not recommended for people who have high uric acid levels but no symptoms.

Most-Reported Side Effects for Allopurinol

From FAERS, the FDA’s public side-effect reporting system (0 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Diarrhea 8,726 reports
Fatigue 8,284 reports
Dyspnea 7,956 reports
Nausea 7,333 reports
Acute kidney injury 6,761 reports
See full Allopurinol drug information
Keep checking

Other Drugs & White Hellebore

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full White Hellebore list.

See the full White Hellebore interactions page
See every supplement checked against Allopurinol, ranked by severity
Evidence & sources

White Hellebore References

The 8 references that drive our White Hellebore 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. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  3. Jaspersen-Schib R, Theus L, Guirguis-Oeschger M, et al. [Serious plant poisonings in Switzerland 1966-1994. Case analysis from the Swiss Toxicology Information Center]. Schweiz Med Wochenschr 1996;126:1085-98.
  4. Grobosch T, Binscheck T, Martens F, Lampe D. Accidental intoxication with Veratrum album. J Anal Toxicol. 2008;32(9):768-73. PubMed
  5. Rauber-Lüthy C, Halbsguth U, Kupferschmidt H, et al. Low-dose exposure to Veratrum album in children causes mild effects--a case series. Clin Toxicol (Phila). 2010;48(3):234-7.
  6. Gilotta I, Brvar M. Accidental poisoning with Veratrum album mistaken for wild garlic (Allium ursinum). Clin Toxicol (Phila). 2010;48(9):949-52.
  7. Melnik EV, Belova MV, Potskhveriya MM, Simonova AY, Tyurin IA, Ramenskaya GV. Veratrum alkaloid determination in four cases of Veratrum aqua poisonings. J Anal Toxicol 2022;46(1):e42-e47.
  8. Taldaev A, Terekhov RP, Melnik EV, et al. Insights into the Cardiotoxic Effects of Veratrum Lobelianum Alkaloids: Pilot Study. Toxins (Basel) 2022;14(7):490. 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 White Hellebore and Allopurinol Together: Common Questions

Is it safe to take White Hellebore with Allopurinol?
We do not list a known interaction between White Hellebore and Allopurinol. 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 White Hellebore and Allopurinol have any of the same side effects?
Yes — our sources link each of them separately to 10 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.
Does Allopurinol interact with any supplements?
Yes. Allopurinol has documented interactions with 60 supplements in our database — White Hellebore is not one of them. The Allopurinol 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

White Hellebore monograph Uses, safety profile, and every drug interaction in one place Allopurinol drug information The full plain-English guide to this medication Allopurinol supplement interactions Every supplement checked against Allopurinol, 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 8 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Allopurinol and White Hellebore?

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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.