Drug & supplement interaction

Lemon Verbena + Psyllium (OTC drug)

Psyllium (OTC drug) brand name: Metamucil.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 27, 2026

The bottom line No known interaction

We found no known interaction between Lemon Verbena and Psyllium (OTC drug) 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

Lemon Verbena and Psyllium (OTC drug)

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 Psyllium (OTC drug) and Lemon Verbena 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.

Lemon Verbena safety at a glance

Lemon Verbena overall Use caution Generally well tolerated as a tea or food, but concentrated extracts and the essential oil are less studied.

Pregnancy Avoid Not enough safety data, so it is best avoided in medicinal amounts during pregnancy.

Breastfeeding Avoid Safety has not been established, so avoid medicinal amounts while breastfeeding.

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

Still wondering about combining Psyllium (OTC drug) and Lemon Verbena? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Psyllium (OTC drug)

Interactions in our licensed database are recorded against drug classes, not just single drug names. Psyllium (OTC drug) is filed under a single classification — oral drugs. Lemon Verbena has documented interactions with 1 drug class — the most serious being benzodiazepines (moderate) — and none of Psyllium (OTC drug)’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

Lemon Verbena Does Interact With Other Medications

Lemon Verbena has 22 moderate known drug interactions in our database — Psyllium (OTC drug) isn’t one of them. If you take anything else, check it against the full list below.

Moderate 22 No known interaction 2,808 (incl. Psyllium (OTC drug))

Taking anything else?

Check Another of Your Medications Against Lemon Verbena

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

What to actually watch for

What Lemon Verbena Itself Has Been Linked To

This is not an interaction — nothing below involves Psyllium (OTC drug). It is the side-effect record for Lemon Verbena on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Lemon Verbena, this list is the first place to look.

A skin rash Additional detail
“Contact dermatitis may occur with topical application of lemon verbena (6).”

Lemon Verbena · Natural Medicines adverse-effect record, reported in dermatitis.
1 source cited

6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.

Everything above comes from the Natural Medicines adverse-effect record for Lemon Verbena — expand a row for the licensed statement it rests on. We haven’t matched Psyllium (OTC drug) to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Psyllium (OTC drug).

From our Q&A

Questions About Lemon Verbena or Psyllium (OTC drug)

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lemon Verbena or Psyllium (OTC drug), 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 Psyllium (OTC drug)

This page covers Lemon Verbena only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Psyllium (OTC drug) page lists 17 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Coffee Charcoal (moderate), European Mandrake (moderate), Glucomannan (moderate) and Guar Gum (moderate).

By severity: 1 major · 7 moderate · 9 minor.

From our pharmacist’s overview on the Psyllium (OTC drug) page

“Activated charcoal tops the psyllium (Metamucil) list and is the one entry rated major. Charcoal binds many medicines in the gut and can cut how much of them reaches the body, so pairing it with anything you take by mouth deserves real caution, and I would read that entry before the rest.”

Reviewed by 2 · Jul 18, 2026

Open the Psyllium (OTC drug) interaction page

One more smart check

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

We hold 32 real supplement products containing Lemon Verbena, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lemon Verbena. Even though Lemon Verbena itself has no known interaction with Psyllium (OTC drug), 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 Lemon Verbena and Psyllium (OTC drug) 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 Lemon Verbena

Top half

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

29 days ago today

Medication Psyllium (OTC drug)

Top half

#1,184 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 Lemon Verbena reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 27, 2026. The Lemon Verbena and Psyllium (OTC drug) 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 Lemon Verbena

What is Lemon Verbena?

Digestive upset
Anxiety and trouble sleeping
Joint pain and inflammation
Exercise recovery and oxidative stress
Weight management
Flavoring and aromatherapy

Lemon verbena is a fragrant South American herb most often enjoyed as a tea or flavoring, and it contains polyphenols like verbascoside that have antioxidant activity in lab studies. Some small studies hint at benefits for inflammation, exercise recovery, and appetite, but the human evidence is limited and far from proven. It is generally well tolerated as a food and tea, but talk with your pharmacist or doctor before using concentrated supplements, and avoid it during pregnancy and breastfeeding.

Aloysia citrodora · Verbenaceae · Leaves and flowering tops; the essential oil is also used · Tea, capsules, liquid extracts, essential oil, and as a flavoring in foods and beverages

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

Lemon Verbena: dosing

There is no official or well-established standardized dose for lemon verbena. As a tea, it is commonly prepared by steeping the dried leaves in hot water, similar to other herbal teas.For capsules and extracts, products vary widely and some are standardized to a certain percentage of polyphenols or verbascoside. More is not always better, and starting with the lowest amount is a sensible approach.

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

Read the full Lemon Verbena monograph & all interactions

Medication

About Psyllium

What Is Psyllium Used For?

Brand name: Metamucil

Psyllium is used to treat occasional constipation and help restore regularity. It is available under many brand names — including Careone, Best Choice, Premier Value Fiber, fiber laxative, meijer fiber laxative, Publix, Best Choice Fiber Therapy, Daily Fiber, Dr. Fibra, Lidl Orange Smooth Fiber Powder, and meijer fiber therapy — all for this same purpose.

Most products note that psyllium generally produces a bowel movement within 12 to 72 hours of taking a dose.

See full Psyllium drug information

Keep checking

Other Drugs & Lemon Verbena

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

0Major

22Moderate

0Minor

2,807No known interaction

22 Moderate 2,807 No interaction

Moderate

22 interactions

No interaction 2,807 drugs checked — show the list

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

Showing the 60 most looked-up of 2,807 medications checked with no known interaction — see the full Lemon Verbena list.

See the full Lemon Verbena interactions page

See every supplement checked against Psyllium (OTC drug), ranked by severity

Evidence & sources

Lemon Verbena References

The 2 references that drive our Lemon Verbena 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.

The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
Afrasiabian F, Mirabzadeh Ardakani M, Rahmani K, et al. Aloysia citriodora Palau (lemon verbena) for insomnia patients: A randomized, double-blind, placebo-controlled clinical trial of efficacy and safety. Phytother Res. 2019;33(2):350-359.

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 Lemon Verbena and Psyllium (OTC drug) Together: Common Questions

Is it safe to take Lemon Verbena with Psyllium (OTC drug)?

We do not list a known interaction between Lemon Verbena and Psyllium (OTC drug). 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 Lemon Verbena and Psyllium (OTC drug) combination checked?

Interactions in our licensed database are recorded against drug classes. Psyllium (OTC drug) is filed under 1 classification, and Lemon Verbena has documented interactions with 1 drug class — none of Psyllium (OTC drug)'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 Lemon Verbena interact with any other medications?

Yes. Lemon Verbena has 22 documented drug interactions in our database — Psyllium (OTC drug) 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 Psyllium (OTC drug) interact with any supplements?

Yes. Psyllium (OTC drug) has documented interactions with 17 supplements in our database — Lemon Verbena is not one of them. The Psyllium (OTC drug) 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

Lemon Verbena monograph Uses, safety profile, and every drug interaction in one place Psyllium drug information The full plain-English guide to this medication Psyllium (OTC drug) supplement interactions Every supplement checked against Psyllium (OTC drug), 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 Psyllium (OTC drug) and Lemon Verbena?

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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.