Drug & supplement interaction

Lemongrass + Metoprolol

Metoprolol brand names: Lopressor, Toprol XL.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Oct 4, 2026
The bottom line No known interaction

We found no known interaction between Lemongrass and Metoprolol 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 Metoprolol states a food rule worth keeping to.

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Interaction report

Lemongrass and Metoprolol

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 Metoprolol and Lemongrass 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.

Lemongrass safety at a glance

Lemongrass overall Use caution Likely safe in food amounts, but concentrated extracts and the essential oil have less safety data.
Pregnancy Likely Unsafe When used orally. Lemongrass seems to have uterine and menstrual flow stimulating effects; avoid using. Read the full pregnancy detail
Breastfeeding Use caution Not enough reliable data; avoid medicinal amounts and stick to occasional food use.

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 Metoprolol and Lemongrass? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Metoprolol

Interactions in our licensed database are recorded against drug classes, not just single drug names. Metoprolol is filed under 6 classifications — including beta-blockers, antihypertensive drugs, cytochrome p450 2d6 (cyp2d6) substrates. Lemongrass has documented interactions with 3 drug classes — the most serious being cytochrome p450 3a4 (cyp3a4) substrates (moderate), glucuronidated drugs (moderate) and pentobarbital (nembutal) (moderate) — and none of Metoprolol’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

Lemongrass Does Interact With Other Medications

Lemongrass has 710 moderate known drug interactions in our database — Metoprolol isn’t one of them. If you take anything else, check it against the full list below.

Moderate 710 No known interaction 2,120 (incl. Metoprolol)
Taking anything else?

Check Another of Your Medications Against Lemongrass

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

What to actually watch for

What Metoprolol’s Own FDA Label Lists

This is not an interaction — none of it involves Lemongrass. These are the most notable effects listed in the ADVERSE REACTIONS section of Metoprolol’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. 10 of them are worth acting on rather than waiting out — marked below.

  • Memory problems Worth acting on
  • A slow heartbeat Worth acting on
  • A heart attack Worth acting on
  • Hallucinations Worth acting on
  • Heart failure Worth acting on
  • Fainting Worth acting on
  • Wheezing Worth acting on
  • Confusion Worth acting on
  • Chest pain Worth acting on
  • Low mood Worth acting on

Showing the 10 most notable of 47 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 Metoprolol. Read the label on DailyMed › Lemongrass’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Lemongrass side to compare — that is a limit of the record, not a statement that Lemongrass has no side effects.

Special populations

Lemongrass in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally. Lemongrass seems to have uterine and menstrual flow stimulating effects; avoid using.

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

How to take them

Some Metoprolol Products Have a Food Rule — Lemongrass Should Not Break It

At least one FDA label for a product containing Metoprolol says to take it with food. If you take Lemongrass on an empty stomach out of habit, keep them separate — and take Metoprolol with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Metoprolol 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.

Administer once daily with food or after a meal.

From the Dosage and Administration section of the FDA label we read for Metoprolol — 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.

Overlapping uses

What Metoprolol Is Prescribed For, and What Lemongrass Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Metoprolol is a prescription medicine with approved uses on its FDA label. Lemongrass is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Metoprolol is prescribed for: Metoprolol is used for several heart and blood pressure conditions. Which ones depend on the product you take. High blood pressure (hypertension): metoprolol tartrate tablets, metoprolol succinate extended-release tablets (including Toprol-XL), and Lopressor tablets lower blood pressure. This lowers the risk of strokes and heart attacks.

Read the rest of what Metoprolol is prescribed for

Angina pectoris: these same tablet products are also used for angina. Heart failure: metoprolol succinate extended-release tablets (including Toprol-XL) are used in heart failure. They reduce the risk of cardiovascular death and heart failure hospitalizations. Heart attack: metoprolol tartrate tablets and Lopressor tablets reduce the risk of cardiovascular death after a definite or suspected acute heart attack, in stable patients, when used with intravenous metoprolol. Metoprolol tartrate injection is used in the hospital for the same purpose, followed by oral metoprolol.

Lemongrass has been studied for:

  • Hypertension studied, not established Lemongrass has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Lemongrass for hypertension

    Although there has been interest in using oral lemongrass for hypertension, there is insufficient reliable information about the clinical effects of lemongrass for this purpose.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Metoprolol on your own; if you are taking Lemongrass for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Lemongrass or Metoprolol

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Lemongrass or Metoprolol, 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 Metoprolol

This page covers Lemongrass only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Metoprolol page lists 183 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), Indian Snakeroot (major) and Tyramine (major).

By severity: 5 major · 152 moderate · 26 minor.

From our pharmacist’s overview on the Metoprolol page

“With metoprolol (Lopressor, Toprol XL), a beta-blocker for high blood pressure and heart problems, these interactions deserve genuine care, starting with the five rated major. Most entries pull blood pressure one way or the other: many supplements add to metoprolol's lowering effect and can drop pressure too far, while a few, tyramine…”

Reviewed by 2 · Jul 18, 2026

Open the Metoprolol interaction page

One more smart check

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

We hold 417 real supplement products containing Lemongrass, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Lemongrass. Even though Lemongrass itself has no known interaction with Metoprolol, 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 Lemongrass and Metoprolol 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 Lemongrass
Top 25%

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

29 days ago today
Medication Metoprolol
Top 1%

#12 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 Lemongrass reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Lemongrass and Metoprolol 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 Lemongrass

What is Lemongrass?

Lemongrass
  • Digestive upset
  • Anxiety and stress
  • Antimicrobial/antifungal
  • Insect repellent
  • Flavoring in food and drinks

Lemongrass is a fragrant tropical grass widely used as a cooking herb, a tea, and an aromatherapy oil. It is generally considered safe in the small amounts used in food, but most of its claimed health benefits come from laboratory or animal studies rather than strong human research. Talk with your pharmacist or doctor before using concentrated supplements or the essential oil, especially if you are pregnant or breastfeeding.

Cymbopogon citratus · Poaceae · Leaves, stalks, and essential oil · Tea, fresh or dried herb, capsules, essential oil, topical preparations

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

Lemongrass: dosing

There is no official standardized dose for lemongrass. The amount used depends on the form, such as tea, capsule, or essential oil.For tea, people commonly steep a small amount of dried or fresh leaves in hot water. For supplements, follow the directions on the product label, since strength varies from brand to brand.

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

Read the full Lemongrass monograph & all interactions
Medication

About Metoprolol

What Is Metoprolol Used For?

Brand names: Lopressor, Toprol XL

Metoprolol is used for several heart and blood pressure conditions. Which ones depend on the product you take.

  • High blood pressure (hypertension): metoprolol tartrate tablets, metoprolol succinate extended-release tablets (including Toprol-XL), and Lopressor tablets lower blood pressure. This lowers the risk of strokes and heart attacks.
  • Angina pectoris: these same tablet products are also used for angina.
  • Heart failure: metoprolol succinate extended-release tablets (including Toprol-XL) are used in heart failure. They reduce the risk of cardiovascular death and heart failure hospitalizations.
  • Heart attack: metoprolol tartrate tablets and Lopressor tablets reduce the risk of cardiovascular death after a definite or suspected acute heart attack, in stable patients, when used with intravenous metoprolol. Metoprolol tartrate injection is used in the hospital for the same purpose, followed by oral metoprolol.
See full Metoprolol drug information
Keep checking

Other Drugs & Lemongrass

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

0Major
710Moderate
0Minor
2,119No known interaction
710 Moderate 2,119 No interaction
Moderate

710 interactions

Showing 60 of 710 moderate interactions — see all 710 on the Lemongrass page.

No interaction 2,119 drugs checked — show the list

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

Showing the 60 most looked-up of 2,119 medications checked with no known interaction — see the full Lemongrass list.

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

Lemongrass References

The 2 references that drive our Lemongrass 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. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Li CC, Yu HF, Chang CH, Liu YT, Yao HT. Effects of lemongrass oil and citral on hepatic drug-metabolizing enzymes, oxidative stress, and acetaminophen toxicity in rats. J Food Drug Anal 2018;26(1):432-8. 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 Lemongrass and Metoprolol Together: Common Questions

Is it safe to take Lemongrass with Metoprolol?
We do not list a known interaction between Lemongrass and Metoprolol. 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.
Should I take Lemongrass and Metoprolol at the same time of day?
At least one FDA label for a product containing Metoprolol says to take it with food. If you take Lemongrass on an empty stomach out of habit, keep them separate and take Metoprolol with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Metoprolol products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Are Lemongrass and Metoprolol used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Lemongrass in each. That is a conversation for your prescriber, especially if Metoprolol is being adjusted to a target.
How was the Lemongrass and Metoprolol combination checked?
Interactions in our licensed database are recorded against drug classes. Metoprolol is filed under 6 classifications, and Lemongrass has documented interactions with 3 drug classes — none of Metoprolol'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 Lemongrass interact with any other medications?
Yes. Lemongrass has 710 documented drug interactions in our database — Metoprolol 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 Metoprolol interact with any supplements?
Yes. Metoprolol has documented interactions with 183 supplements in our database — Lemongrass is not one of them. The Metoprolol 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

Lemongrass monograph Uses, safety profile, and every drug interaction in one place Metoprolol drug information The full plain-English guide to this medication Metoprolol supplement interactions Every supplement checked against Metoprolol, 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 Metoprolol and Lemongrass?

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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.