Drug & supplement interaction

Buckhorn Plantain + Clonidine

Clonidine brand name: Catapres.

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 Buckhorn Plantain 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

Buckhorn Plantain 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 Buckhorn Plantain 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 Buckhorn Plantain at all — not against Clonidine, 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.

Buckhorn Plantain safety at a glance

Buckhorn Plantain overall Use caution Generally considered low-risk for short-term use, but human safety data are limited.
Pregnancy Likely Unsafe When used orally or topically. Some evidence suggests buckhorn plantain affects muscle tone of the uterus. Read the full pregnancy detail
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoid unless cleared by your provider.

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 Clonidine and Buckhorn Plantain? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Clonidine’s Own FDA Label Lists

This is not an interaction — none of it involves Buckhorn Plantain. 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. Buckhorn Plantain’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Buckhorn Plantain side to compare — that is a limit of the record, not a statement that Buckhorn Plantain has no side effects.

Special populations

Buckhorn Plantain in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally or topically. Some evidence suggests buckhorn plantain affects muscle tone of the uterus.

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

From our Q&A

Questions About Buckhorn Plantain 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 Buckhorn Plantain 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 Buckhorn Plantain 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

One more smart check

Taking Buckhorn Plantain as Part of a Dietary Supplement Product? Check It for Interactions

We hold 4 real supplement products containing Buckhorn Plantain, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Buckhorn Plantain. Even though Buckhorn Plantain itself has no known interaction with Clonidine, 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 Buckhorn Plantain 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 Buckhorn Plantain
Steady interest

#1,386 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Clonidine
Top half

#802 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 Buckhorn Plantain reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Buckhorn Plantain and Clonidine 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 Buckhorn Plantain

What is Buckhorn Plantain?

Buckhorn Plantain
  • Cough and sore throat
  • Respiratory irritation
  • Wound and skin care
  • Digestive upset
  • Mild inflammation

Buckhorn plantain is a common weed-like herb used traditionally for coughs, sore throats, and minor skin wounds. Some lab and small studies suggest it has soothing and mild anti-inflammatory effects, but high-quality human evidence is limited. It is generally considered low-risk for short-term use, but pregnant and breastfeeding people should be cautious and check with a healthcare provider.

Plantago lanceolata · Plantaginaceae · Leaves (above-ground parts) · Tea, tincture, syrup, capsules, topical creams or ointments, fresh crushed leaves

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

Buckhorn Plantain: dosing

There is no official standardized dose for buckhorn plantain. Traditional preparations include teas made from the dried leaves, syrups, tinctures, and topical products.Because product strength varies a lot between brands and forms, the best approach is to follow the directions on the product label.

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

Read the full Buckhorn Plantain 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 & Buckhorn Plantain

Browse every other medication we’ve checked against Buckhorn Plantain — 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 Buckhorn Plantain 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 Buckhorn Plantain list.

See the full Buckhorn Plantain interactions page
See every supplement checked against Clonidine, ranked by severity
Evidence & sources

Buckhorn Plantain References

The 1 references that drive our Buckhorn Plantain 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. Shipochliev T. Uterotonic action of extracts from a group of medicinal plants. Vet Med Nauki 1981;18:94-8.

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 Buckhorn Plantain and Clonidine Together: Common Questions

Is it safe to take Buckhorn Plantain with Clonidine?
We do not list a known interaction between Buckhorn Plantain 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.
Does Clonidine interact with any supplements?
Yes. Clonidine has documented interactions with 138 supplements in our database — Buckhorn Plantain 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

Buckhorn Plantain 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Clonidine and Buckhorn Plantain?

Our pharmacists answer your medication & supplement questions — free.

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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.