Drug & supplement interaction

Wild Carrot + Polythiazide

Polythiazide brand name: Renese.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Polythiazide falls into 2 drug categories that Wild Carrot can interact with; the most serious is rated moderate. Theoretically, excessive doses of wild carrot seed oil might interfere with antihypertensive therapy due to cardiotonic effects.

Read the full interaction report
SeverityModerate
LikelihoodProbable
Interactions2
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Wild Carrot and Polythiazide

These two interact in 2 distinct ways. Each one is explained separately below.

Why Are There 2 Interactions?

Wild Carrot interacts with whole categories of medication. Polythiazide falls into 2 of those categories, so it can interact with Wild Carrot in 2 different ways. We’ve listed each one below — your overall risk is driven by the most serious of them (Moderate).

Moderate

ANTIHYPERTENSIVE DRUGS

1 of 2

Why this applies to Polythiazide

Polythiazide falls under ANTIHYPERTENSIVE DRUGS — the group Wild Carrot interacts with.

Theoretically, excessive doses of wild carrot seed oil might interfere with antihypertensive therapy due to cardiotonic effects.
Severity Moderate Likelihood Probable Evidence D

Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports..

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Polythiazide (Renese) is a water pill that helps lower blood pressure by helping your body get rid of extra salt and fluid. The concern here is fairly mild and mostly on paper: in lab and animal studies, the essential oil from wild carrot seeds seems to have a heart-stimulating, blood-pressure-nudging effect. In theory, taking large, concentrated amounts of that seed oil could push against the blood-pressure-lowering work your polythiazide is doing.

This is theoretical, based on how the plant behaves, not on real human studies, so I wouldn't panic. Everyday culinary carrot is not the issue here; concentrated seed-oil supplements are. If you want to try wild carrot, check with your pharmacist or doctor first, and keep an eye on your home blood pressure readings.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
Moderate

PHOTOSENSITIZING DRUGS

2 of 2

Polythiazide also falls under PHOTOSENSITIZING DRUGS.

Theoretically, concomitant use might result in increased photosensitivity. Some drugs that cause photosensitivity include amitriptyline (Elavil), quinolones (Ciprofloxacin, others), sulfa drugs (Septra, Bactrim, others), and tetracycline.
Severity Moderate Likelihood Probable Evidence D

Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports..

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the gist of this one. Polythiazide (Renese) is a water pill in the thiazide family, and thiazides are well known for making your skin more sensitive to sunlight. Wild carrot may add a little to that effect, since some of its plant compounds (especially in the seeds) can also make skin react more to the sun. Put them together and, in theory, you could sunburn faster or break out in a rash after time outdoors.

I want to be honest about the strength of this: it's theoretical, based on how these things work, not on solid human studies. So don't panic. Just play it safe with sunscreen, hats, and shade, and check with your pharmacist or doctor before adding wild carrot.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Wild Carrot Also Interacts With Other Medications

Wild Carrot has 474 moderate known drug interactions in our database — the Polythiazide one above is among them. If you take anything else, check it against the full list below.

Moderate 474 No known interaction 2,356 (incl. Polythiazide)
Taking anything else?

Check Another of Your Medications Against Wild Carrot

Covers the 2,830 medications we’ve checked against Wild Carrot. Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Polythiazide

This page covers Wild Carrot only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Polythiazide page lists 227 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), Asarabacca (major) and Dolomite (major).

By severity: 10 major · 192 moderate · 25 minor.

From our pharmacist’s overview on the Polythiazide page

“Polythiazide (Renese) is a thiazide diuretic for high blood pressure, and this is a list I would treat with real care. Most entries either add to its blood-pressure-lowering and fluid-losing effects or deepen the potassium loss it already causes, which can leave someone dizzy or set the stage for heart rhythm trouble.”

Reviewed by 2 · Jul 18, 2026

Open the Polythiazide interaction page

One more smart check

Taking Wild Carrot as Part of a Dietary Supplement Product? Check It for Interactions

We hold 7 real supplement products containing Wild Carrot, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Wild Carrot. Your product may carry other ingredients that interact with Polythiazide too, on top of Wild Carrot — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Wild Carrot and Polythiazide 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 Wild Carrot
Steady interest

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

29 days ago today
Medication Polythiazide
Top half

#749 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.

Supplement

About Wild Carrot

What is Wild Carrot?

Wild Carrot
  • Urinary and bladder complaints
  • Digestive upset and gas
  • Menstrual support
  • Supporting milk production
  • Mild diuretic (water pill) effect

Wild carrot is a traditional herb (the wild ancestor of the garden carrot) used mostly for urinary, digestive, and menstrual complaints. High-quality human studies are lacking, so its benefits are unproven, and it should be avoided in pregnancy because of traditional use to affect the uterus. Talk with your pharmacist or doctor before using it.

Read the full Wild Carrot monograph & all interactions
Keep checking

Other Drugs & Wild Carrot

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

0Major
474Moderate
0Minor
2,355No known interaction
474 Moderate 2,355 No interaction
Moderate

474 interactions

Showing 60 of 474 moderate interactions — see all 474 on the Wild Carrot page.

No interaction 2,355 drugs checked — show the list

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

Showing the 60 most looked-up of 2,355 medications checked with no known interaction — see the full Wild Carrot list.

See the full Wild Carrot interactions page
See every supplement checked against Polythiazide, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Wild Carrot monograph › Uses, safety, and every drug interaction in one place Polythiazide supplement interactions › Every supplement checked against Polythiazide, 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 Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Wild Carrot and Polythiazide Together: Common Questions

Can you take Wild Carrot with Polythiazide?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
Why are there 2 interactions listed for Wild Carrot and Polythiazide?
Polythiazide belongs to more than one drug category, and Wild Carrot interacts with each of those categories a little differently. We list every one so nothing is missed — your overall risk is driven by the most serious of them.
How serious is the Wild Carrot and Polythiazide interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Still Have a Question About Polythiazide and Wild Carrot?

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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.