Drug & supplement interaction

Chinese Prickly Ash + Clonidine

Clonidine brand name: Catapres.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Chinese Prickly Ash and Clonidine 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.

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Interaction report

Chinese Prickly Ash and Clonidine

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 Clonidine and Chinese Prickly Ash 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.

Chinese Prickly Ash safety at a glance

Chinese Prickly As... overall Use caution Generally safe as a food spice, but medicinal-strength extracts are not well studied in people.
Pregnancy Avoid Avoid medicinal amounts during pregnancy because safety has not been established.
Breastfeeding Avoid Avoid medicinal use while breastfeeding due to a lack of safety data.

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

Still wondering about combining Clonidine and Chinese Prickly Ash? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Clonidine

Interactions in our licensed database are recorded against drug classes, not just single drug names. Clonidine is filed under 4 classifications — including alpha-adrenergic agonists, antihypertensive drugs, oral drugs. Chinese Prickly Ash has documented interactions with 1 drug class — the most serious being anticoagulant/antiplatelet drugs (moderate) — and none of Clonidine’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

Chinese Prickly Ash Does Interact With Other Medications

Chinese Prickly Ash has 122 moderate known drug interactions in our database — Clonidine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 122 No known interaction 2,708 (incl. Clonidine)
Taking anything else?

Check Another of Your Medications Against Chinese Prickly Ash

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

What to actually watch for

What Clonidine’s Own FDA Label Lists

This is not an interaction — none of it involves Chinese Prickly Ash. These are the most notable effects listed in the ADVERSE REACTIONS section of Clonidine’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 4 of them are worth acting on rather than waiting out — marked below.

  • A slow heartbeat Worth acting on
  • Hallucinations Worth acting on
  • Raised blood pressure Worth acting on mentioned in 5.7% of FDA reports for Clonidine
  • An allergic reaction Worth acting on
  • Vivid dreams or nightmares
  • Mood changes or irritability
  • Tremor or shakiness
  • A stuffy or runny nose
  • Dry mouth
  • A fast or pounding heartbeat

Showing the 10 most notable of 21 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Clonidine. Read the label on DailyMed › Where a percentage is shown, it is the share of 57,112 voluntary FDA FAERS reports for Clonidine that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Chinese Prickly Ash’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Chinese Prickly Ash side to compare — that is a limit of the record, not a statement that Chinese Prickly Ash has no side effects.

From our Q&A

Questions About Chinese Prickly Ash or Clonidine

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

This page covers Chinese Prickly Ash only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Clonidine page lists 138 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Tyramine (major) and Adrafinil (moderate).

By severity: 4 major · 113 moderate · 21 minor.

From our pharmacist’s overview on the Clonidine page

“American hellebore is the ingredient I would want a clonidine (Catapres) patient to know about first. Its alkaloids lower blood pressure even in small doses and slow the heart, both things clonidine already does, so the combination can drop someone dangerously low.”

Reviewed by 2 · Jul 18, 2026

Open the Clonidine interaction page

How much people look this up

Where Chinese Prickly Ash and Clonidine 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 Chinese Prickly Ash
Steady interest

#1,092 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Clonidine
Top half

#808 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 Chinese Prickly Ash reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Chinese Prickly Ash and Clonidine records this page draws on were last updated June 20, 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 Chinese Prickly Ash

What is Chinese Prickly Ash?

  • Digestive upset and stomach pain
  • Toothache and oral numbing
  • Antimicrobial and antiparasitic use
  • Cooking spice (Sichuan pepper)
  • Mild pain relief

Chinese Prickly Ash is the fruit husk of Zanthoxylum bungeanum, best known as the Sichuan pepper that creates a tingling, numbing sensation on the tongue. It is widely used in cooking and traditional Chinese medicine for digestive complaints and pain, but strong human evidence for medicinal benefits is limited. Use culinary amounts safely, but talk to a pharmacist or doctor before using concentrated extracts.

Zanthoxylum bungeanum · Rutaceae · Dried fruit husks (pericarp), and sometimes the seeds and essential oil · Dried whole spice (Sichuan pepper), ground powder, essential oil, decoctions, and capsules

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

Chinese Prickly Ash: dosing

There is no established standardized medicinal dose for Chinese Prickly Ash. As a cooking spice, people use small culinary amounts to taste.If you choose a supplement, extract, or essential oil product, follow the directions on the product label and do not exceed them.

From our Chinese Prickly Ash monograph — the full record covers uses, side effects and every documented interaction.

Read the full Chinese Prickly Ash monograph & all interactions
Medication

About Clonidine

What Is Clonidine Used For?

Brand name: Catapres

Clonidine is used to treat high blood pressure (hypertension). Several products — including Clonidine Hydrochloride tablets, Javadin oral solution, Nexiclon XR extended-release tablets, and Catapres-TTS skin patches — are approved for this use, either alone or combined with other blood pressure medicines.

Extended-release formulations — including Onyda XR oral suspension and clonidine hydrochloride extended-release tablets (such as Kapvay) — are approved to treat ADHD in children and teenagers ages 6 to 17, either on their own or alongside stimulant medications. Separately, clonidine injection products (Duraclon and others) are used alongside opioid pain medicines to treat severe cancer pain that opioids alone cannot control adequately.

Most-Reported Side Effects for Clonidine

From FAERS, the FDA’s public side-effect reporting system (57,112 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 3,519 reports
Nausea 3,475 reports
Headache 3,432 reports
Hypertension 3,275 reports
Dyspnea 2,748 reports
See full Clonidine drug information
Keep checking

Other Drugs & Chinese Prickly Ash

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

0Major
122Moderate
0Minor
2,707No known interaction
122 Moderate 2,707 No interaction
Moderate

122 interactions

Showing 60 of 122 moderate interactions — see all 122 on the Chinese Prickly Ash page.

No interaction 2,707 drugs checked — show the list

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

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Chinese Prickly Ash list.

See the full Chinese Prickly Ash interactions page
See every supplement checked against Clonidine, ranked by severity
Evidence & sources

Chinese Prickly Ash References

The 2 references that drive our Chinese Prickly Ash 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. Yang YP, Cheng MJ, Teng CM, et al. Chemical and anti-platelet constituents from Formosan Zanthoxylum simulans. Phytochemistry 2002;61:567-72.. PubMed
  2. Zeng X, Li X, Wang X, Wen X, Jiang X. The effect of Zanthoxylum bungeanum maxim extract on crow's feet: A double-blind, split-face trial. Dermatol Ther. 2019 Nov;32(6):e13079.

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 Chinese Prickly Ash and Clonidine Together: Common Questions

Is it safe to take Chinese Prickly Ash with Clonidine?
We do not list a known interaction between Chinese Prickly Ash and Clonidine. 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.
How was the Chinese Prickly Ash and Clonidine combination checked?
Interactions in our licensed database are recorded against drug classes. Clonidine is filed under 4 classifications, and Chinese Prickly Ash has documented interactions with 1 drug class — none of Clonidine'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 Chinese Prickly Ash interact with any other medications?
Yes. Chinese Prickly Ash has 122 documented drug interactions in our database — Clonidine 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 Clonidine interact with any supplements?
Yes. Clonidine has documented interactions with 138 supplements in our database — Chinese Prickly Ash is not one of them. The Clonidine 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

Chinese Prickly Ash monograph Uses, safety profile, and every drug interaction in one place Clonidine drug information The full plain-English guide to this medication Clonidine supplement interactions Every supplement checked against Clonidine, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Clonidine and Chinese Prickly Ash?

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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.