Drug & supplement interaction

Coriander + Trospium

Trospium brand names: Sanctura, Trosec, Regurin.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 20, 2026

The bottom line No known interaction

We found no known interaction between Coriander and Trospium 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 label for Trospium states a food rule worth keeping to, and 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.

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Interaction report

Coriander and Trospium

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 Trospium and Coriander 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.

Coriander safety at a glance

Coriander overall Generally safe Coriander is generally safe in normal food amounts for most people.

Pregnancy Use caution Food amounts are likely fine, but concentrated medicinal doses or essential oil should be avoided without medical advice.

Breastfeeding Use caution Food amounts are likely fine, but medicinal doses lack safety data, so use caution.

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

Still wondering about combining Trospium and Coriander? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Trospium

Interactions in our licensed database are recorded against drug classes, not just single drug names. Trospium is filed under 3 classifications — urinary acidifying agents, anticholinergic drugs, oral drugs. Coriander has documented interactions with 4 drug classes — the most serious being antidiabetes drugs (moderate), antihypertensive drugs (moderate) and cns depressants (moderate) — and none of Trospium’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

Coriander Does Interact With Other Medications

Coriander has 717 moderate known drug interactions in our database — Trospium isn’t one of them. If you take anything else, check it against the full list below.

Moderate 717 No known interaction 2,113 (incl. Trospium)

Taking anything else?

Check Another of Your Medications Against Coriander

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

What to actually watch for

No Interaction Found — But Data Suggests Coriander and Trospium May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. One of them is worth acting on rather than waiting out — marked below.

A severe allergic reaction Worth acting on Additional detail
Coriander
“A case of anaphylactic reaction characterized by generalized urticaria, conjunctivitis, oropharyngeal angioedema, and bronchospasms has been reported in a 25-year-old spice worker who consumed food containing coriander fruit. The digestive spice allergy was attributed to sensitization to coriander caused by occupational exposure to coriander fruit, powder, and dust.”

Coriander · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).
5 sources cited

46192. Ebo, D. G., Bridts, C. H., Mertens, M. H., and Stevens, W. J. Coriander anaphylaxis in a spice grinder with undetected occupational allergy. Acta Clin Belg. 2006;61(3):152-156. PubMed

46226. van Toorenenbergen, A. W. and Dieges, P. H. Immunoglobulin E antibodies against coriander and other spices. J Allergy Clin Immunol. 1985;76(3):477-481. PubMed

46245. Sastre, J., Olmo, M., Novalvos, A., Ibanez, D., and Lahoz, C. Occupational asthma due to different spices. Allergy 1996;51(2):117-120. PubMed

19. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.

46168. Kanerva, L. and Soini, M. Occupational protein contact dermatitis from coriander. Contact Dermatitis 2001;45(6):354-355. PubMed
Trospium

Listed in the ADVERSE REACTIONS section of the FDA label for Trospium. Read the label on DailyMed ›
A skin rash Additional detail

Coriander

Recorded for Coriander in the same Natural Medicines adverse-effect record shown under A severe allergic reaction above.

Trospium

Listed in the ADVERSE REACTIONS section of the FDA label for Trospium. Read the label on DailyMed ›

Reported for Coriander but not commonly for Trospium: hives, a stuffy or runny nose, itching and wheezing.

Effects for Trospium come from the ADVERSE REACTIONS section of its FDA label; effects for Coriander come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

How to take them

Some Trospium Products Have a Food Rule — Coriander Should Not Break It

At least one FDA label for a product containing Trospium says to take it on an empty stomach. Most supplements — Coriander included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Trospium on its own and move Coriander to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Trospium products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Trospium Chloride Extended-Release Capsules should be dosed with water on an empty stomach, at least one hour before a meal.

From the Dosage and Administration section of the FDA label we read for Trospium — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Trospium

This page covers Coriander only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Trospium page lists 47 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Henbane (major), Scopolia (major), Angel's Trumpet (moderate) and Bacopa (moderate).

By severity: 3 major · 33 moderate · 11 minor.

From our pharmacist’s overview on the Trospium page

“Trospium (Sanctura, Regurin) calms an overactive bladder by blocking acetylcholine, and most of the 47 supplements flagged against it press on that same nerve signal. Thirty carry anticholinergic activity of their own, adding dry mouth, constipation, blurred vision, and confusion, and two of the three major ratings sit in that group: h…”

Reviewed by 2 · Jul 18, 2026

Open the Trospium interaction page

One more smart check

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

We hold 934 real supplement products containing Coriander, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Coriander. Even though Coriander itself has no known interaction with Trospium, 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 Coriander and Trospium 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 Coriander

Top 25%

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

29 days ago today

Medication Trospium

Steady interest

#2,205 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 Coriander reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Coriander and Trospium 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.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Coriander

What is Coriander?

Digestive upset and gas
Appetite stimulation
Mild antimicrobial (topical)
Diarrhea and IBS symptoms
General flavoring and traditional remedy

Coriander (also called cilantro) is a common cooking herb and spice that has long been used in traditional medicine for digestive complaints. As a food it is generally safe for most people, but high-quality human studies supporting its medicinal benefits are limited. Talk with your pharmacist or doctor before using concentrated extracts or essential oils.

Coriandrum sativum · Apiaceae · Seeds (fruit), leaves, and essential oil · Culinary spice and herb, tea, capsules, tincture/extract, essential oil

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

Coriander: dosing

There is no standardized or proven medicinal dose of coriander. Amounts used in studies and traditional remedies vary widely depending on the form (tea, seeds, capsule, or oil).If you choose to use a coriander supplement, follow the directions on the product label and do not exceed the recommended amount. Essential oils are very concentrated and should not be taken by mouth without professional guidance.

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

Read the full Coriander monograph & all interactions

Medication

About Trospium

What Is Trospium Used For?

Brand names: Sanctura, Trosec, Regurin

Trospium — available as tablets and extended-release capsules — is used to treat overactive bladder (OAB). It targets three main symptoms: the sudden, hard-to-control urge to urinate (urgency), leaking urine when that urge hits (urge urinary incontinence), and needing to urinate much more often than usual (urinary frequency).

Both Trospium Chloride Tablets and Trospium Chloride Extended-Release Capsules carry this indication. Your prescriber will choose the formulation that fits your schedule and health history.

See full Trospium drug information

Keep checking

Other Drugs & Coriander

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

0Major

717Moderate

0Minor

2,112No known interaction

717 Moderate 2,112 No interaction

Moderate

717 interactions

Showing 60 of 717 moderate interactions — see all 717 on the Coriander page.

No interaction 2,112 drugs checked — show the list

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

Showing the 60 most looked-up of 2,112 medications checked with no known interaction — see the full Coriander list.

See the full Coriander interactions page

See every supplement checked against Trospium, ranked by severity

Evidence & sources

Coriander References

The 12 references that drive our Coriander 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.

Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
Swanston-Flatt SK, Day C, Bailey CJ, Flatt PR. Traditional plant treatments for diabetes. Studies in normal and streptozotocin diabetic mice. Diabetologia 1990;33:462-4. PubMed
Gray, A. M. and Flatt, P. R. Insulin-releasing and insulin-like activity of the traditional anti-diabetic plant Coriandrum sativum (coriander). Br.J Nutr. 1999;81(3):203-209.
Kanerva, L. and Soini, M. Occupational protein contact dermatitis from coriander. Contact Dermatitis 2001;45(6):354-355. PubMed
Emamghoreishi, M., Khasaki, M., and Aazam, M. F. Coriandrum sativum: evaluation of its anxiolytic effect in the elevated plus-maze. J Ethnopharmacol. 1-15-2005;96(3):365-370. PubMed
Ebo, D. G., Bridts, C. H., Mertens, M. H., and Stevens, W. J. Coriander anaphylaxis in a spice grinder with undetected occupational allergy. Acta Clin Belg. 2006;61(3):152-156. PubMed
Eidi, M., Eidi, A., Saeidi, A., Molanaei, S., Sadeghipour, A., Bahar, M., and Bahar, K. Effect of coriander seed (Coriandrum sativum L.) ethanol extract on insulin release from pancreatic beta cells in streptozotocin-induced diabetic rats. Phytother.Res
Jabeen, Q., Bashir, S., Lyoussi, B., and Gilani, A. H. Coriander fruit exhibits gut modulatory, blood pressure lowering and diuretic activities. J Ethnopharmacol. 2-25-2009;122(1):123-130. PubMed
van Toorenenbergen, A. W. and Dieges, P. H. Immunoglobulin E antibodies against coriander and other spices. J Allergy Clin Immunol. 1985;76(3):477-481. PubMed
Ashwood-Smith, M. J., Warrington, P. J., Jenkins, M., Ceska, O., and Romaniuk, P. J. Photobiological properties of a novel, naturally occurring furoisocoumarin, coriandrin. Photochem.Photobiol. 1989;50(6):745-751. PubMed
Sastre, J., Olmo, M., Novalvos, A., Ibanez, D., and Lahoz, C. Occupational asthma due to different spices. Allergy 1996;51(2):117-120. PubMed
Beikert FC, Anastasiadou Z, Fritzen B, Frank U, Augustin M. Topical treatment of tinea pedis using 6% coriander oil in unguentum leniens: a randomized, controlled, comparative pilot study. Dermatology. 2013;226(1):47-51. 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.

Pharmacist Counseling Corner

Taking Coriander and Trospium Together: Common Questions

Is it safe to take Coriander with Trospium?

We do not list a known interaction between Coriander and Trospium. 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.

Do Coriander and Trospium have any of the same side effects?

Yes — our sources link each of them separately to 2 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

Should I take Coriander and Trospium at the same time of day?

At least one FDA label for a product containing Trospium says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Trospium on its own and move Coriander to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.

How was the Coriander and Trospium combination checked?

Interactions in our licensed database are recorded against drug classes. Trospium is filed under 3 classifications, and Coriander has documented interactions with 4 drug classes — none of Trospium'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 Coriander interact with any other medications?

Yes. Coriander has 717 documented drug interactions in our database — Trospium 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 Trospium interact with any supplements?

Yes. Trospium has documented interactions with 47 supplements in our database — Coriander is not one of them. The Trospium 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

Coriander monograph Uses, safety profile, and every drug interaction in one place Trospium drug information The full plain-English guide to this medication Trospium supplement interactions Every supplement checked against Trospium, 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 12 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Trospium and Coriander?

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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.