Drug & supplement interaction

Bladderwort + 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 Bladderwort 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

Bladderwort 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 Bladderwort 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 Bladderwort 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.

Bladderwort safety at a glance

Bladderwort overall Not established There is almost no human safety data for bladderwort taken as a supplement.
Pregnancy Avoid No safety data exists, so it is best avoided during pregnancy.
Breastfeeding Avoid No safety data exists, 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 Clonidine and Bladderwort? 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 Bladderwort. 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. Bladderwort’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Bladderwort side to compare — that is a limit of the record, not a statement that Bladderwort has no side effects.

From our Q&A

Questions About Bladderwort 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 Bladderwort 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 Bladderwort 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 Bladderwort 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 Bladderwort
Steady interest

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

29 days ago today
Medication Clonidine
Steady interest

#1,512 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. Bladderwort is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Bladderwort reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Bladderwort 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 Bladderwort

What is Bladderwort?

  • Wound care and skin irritation (traditional)
  • Urinary complaints (traditional)
  • General 'detox' or tonic claims
  • Coughs and respiratory complaints (folk use)

Bladderwort is a group of small carnivorous wetland plants (Utricularia) that have been used in some folk traditions, but there is very little human research to support any health benefit. Because its safety, effectiveness, and proper dose have not been studied in people, it is hard to recommend, and you should talk to a pharmacist or doctor before trying it.

Utricularia spp. · Lentibulariaceae · Whole plant (above-ground parts), traditionally used fresh or dried · Dried herb, teas/infusions, tinctures, and topical preparations (availability is very limited)

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

Bladderwort: dosing

There is no established or standardized dose for bladderwort. Because it has not been studied in people, no safe and effective amount has been defined.If you choose to use a commercial product, follow the directions on the label and do not exceed them.

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

Read the full Bladderwort 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 & Bladderwort

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

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

Bladderwort References

The 1 sources that drive our Bladderwort monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Bladderwort is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Using Dietary Supplements Wisely — NIH NCCIH Source

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 Bladderwort and Clonidine Together: Common Questions

Is it safe to take Bladderwort with Clonidine?
We do not list a known interaction between Bladderwort 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 — Bladderwort 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

Bladderwort 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 Bladderwort?

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.