Laburnum + Allopurinol
Allopurinol brand names: Zyloprim, Caplenal, Cosuric, Rimapurinol, Zyloric.
We found no known interaction between Laburnum 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.
Laburnum 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 Laburnum 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 Laburnum 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.
Laburnum safety at a glance
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.
Laburnum in Pregnancy & Breastfeeding
When used orally. All parts of the plant contain toxic alkaloids that are reported to cross the placenta and enter breast milk.
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
See Every Supplement That Interacts With Allopurinol
This page covers Laburnum 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
Taking Laburnum as Part of a Dietary Supplement Product? Check It for Interactions
We hold 11 real supplement products containing Laburnum, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Laburnum. Even though Laburnum 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:
Where Laburnum 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.
#934 of 1,452 supplements looked up here in the last 7 days
#815 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.
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 Laburnum reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Laburnum and Allopurinol 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.
About Laburnum
What is Laburnum?
- Historically explored as a smoking-cessation aid (due to cytisine content)
- Traditional folk use as a purgative or emetic
- Ornamental garden plant
- Source of the alkaloid cytisine
Laburnum is a poisonous ornamental tree, not a safe dietary supplement. All parts of the plant—especially the seeds—contain the toxic alkaloid cytisine and can cause serious poisoning. Do not eat or take any part of the Laburnum plant; consult a doctor or poison control immediately if ingestion is suspected.
Laburnum anagyroides · Fabaceae · Seeds, flowers, bark, and other plant parts (all considered toxic) · Not used as a commercial supplement; the plant is grown as an ornamental tree
An interaction check asks whether these two react with each other — it does not ask whether Laburnum is a good idea for someone in your situation. Here is what our Laburnum record says about it on its own.
Laburnum: dosing
There is no safe or established dose of Laburnum. It is not a dietary supplement, and no amount of the raw plant is considered safe to consume.Any information you may see about cytisine doses refers to purified, prescription-type products used under medical supervision in certain countries—not to the Laburnum plant. Do not attempt to make or take anything from this tree.
From our Laburnum monograph — the full record covers uses, side effects and every documented interaction.
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.
Other Drugs & Laburnum
Browse every other medication we’ve checked against Laburnum — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Laburnum against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Aspirin ›
- Abemaciclib ›
- Acetaminophen ›
- Metoprolol ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Docusate ›
- Tadalafil ›
- Tirzepatide ›
- Methamphetamine ›
- Ibuprofen ›
- Valacyclovir ›
- Warfarin Sodium ›
- Hydroxyurea ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Amoxicillin ›
- Lisinopril ›
- Isotretinoin ›
- Amlodipine Besylate ›
- Methotrexate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Doxycycline ›
- Fluoxetine ›
- Acyclovir ›
- Azithromycin ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Levothyroxine, Liothyronine ›
- Clonazepam ›
- Quetiapine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Duloxetine ›
- Methylene Blue ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Laburnum list.
Laburnum References
The 4 references that drive our Laburnum 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.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Bramley A, Goulding R. Laburnum "poisoning". Br Med J (Clin Res Ed). 1981;283(6301):1220-1.
- Schep LJ, Slaughter RJ, Beasley DMG. Nicotinic plant poisoning. Clin Toxicol (Phila). 2009;47(8):771-81. doi: 10.1080/15563650903252186. PubMed
- Musshoff F, Madea B. Fatal cytisine intoxication and analysis of biological samples with LC-MS/MS. Forensic Sci Int. 2009;186(1-3):e1-4. doi: 10.1016/j.forsciint.2009.01.011. 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.
Taking Laburnum and Allopurinol Together: Common Questions
Is it safe to take Laburnum with Allopurinol?
Do Laburnum and Allopurinol have any of the same side effects?
Does Allopurinol interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.