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Dietary supplement

Oregano Oil Ingredients & Drug Interactions

by Higher Nature

Oregano Oil label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Oregano Oil against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Oregano Oil is a dietary supplement by Higher Nature with 1 active ingredient. Its ingredients are commonly taken for digestive upset, respiratory and cold symptoms, antimicrobial support.Based on those ingredients, 208 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Oregano Oil. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Oregano Oil by Higher Nature

Ask about any prescription or over-the-counter medication and we check it for interactions with Oregano Oil by Higher Nature — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Oregano Oil by Higher Nature

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 27, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: oregano oil from the oregano plant (Origanum vulgare). The oregano oil is a concentrated extract of the plant's essential compounds.

The capsule also holds inactive ingredients—soya bean lecithin (a binder) and the vegetarian capsule shell itself. Additional oregano flower essential oil is listed in the inactive section, which may refer to components of the formulation.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Oregano's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: For gut health.
  • We looked for evidence on: Dyspepsia, Intestinal parasite infection, Digestive support, Antimicrobial activity, Gastrointestinal health.
  • The closest evidence on file: Oregano is rated "Insufficient Reliable Evidence To Rate" for Dyspepsia (Natural Medicines).
  • Also on file: Oregano is rated "Insufficient Reliable Evidence To Rate" for Intestinal parasite infection.

The evidence we hold doesn't establish that oregano oil works for the conditions listed on this product—acne, bronchitis, asthma, headache, or upper respiratory tract infections. All of these carry a rating of insufficient reliable evidence to rate.

That means the research either hasn't been done or isn't strong enough to know whether it helps. If you're considering this for one of those uses, talk with your doctor about whether it makes sense for your situation.

The evidence, ingredient by ingredient Oregano

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oregano as a food is generally well tolerated. As a concentrated supplement, it's stronger and less studied than the amounts you'd get from cooking with it.

The most common side effect is gastrointestinal upset. Rarely, oregano can trigger systemic allergic reactions, including severe ones like anaphylaxis, in sensitive people—especially those allergic to other plants in the mint family (Lamiaceae).

Avoid medicinal or supplement doses during pregnancy; food amounts are likely fine. Safety during breastfeeding isn't established, so stick to normal food amounts if you're nursing.

Talk with your doctor or pharmacist before taking this if you have a history of allergies to oregano, thyme, basil, or other mint-family plants.

Side effects, ingredient by ingredient Oregano

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Oregano.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 208 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this oregano oil, double-check with your doctor or pharmacist if you take any blood thinners or antiplatelet drugs—the risk of increased bleeding is Moderate. Also confirm if you're on diabetes medications, as oregano may lower blood sugar.

Altogether, these interactions span 208 individual medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This product is for people interested in oregano oil as a supplement, but the evidence doesn't yet show it works for acne, bronchitis, asthma, headache, or respiratory infections. It does carry Moderate interaction risks with blood thinners, antiplatelet drugs, and diabetes medications.

If you take any of those, check with your doctor or pharmacist before starting. Pregnant women should avoid supplement doses, and those nursing should stick to food amounts.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2021.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Oregano Oil, straight from the product label.

Brand Higher Nature
Barcode (UPC) 5031013105838
Net contents 30 Capsule(s)
Market status On market
Date entered into DSLD Mar 25, 2021
DSLD ID 245747
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Children 4 or More Years of Age, Vegan, Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Oregano Oil by Higher Nature, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
UPC/BARCODE
5031013105838
IngredientAmount% DV
Oregano Oil50 mg--

Other ingredients: Soya bean Lecithin, Vegetarian Capsule, Oregano (Origanum vulgare) flower essential oil

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation

Free from: Artificial colours, flavourings or preservatives, corn, dairy products, gluten, lactose, maize, salt, starch, sugar, wheat, yeast.

For gut health

Advanced formula Optimal benefit

No odour, taste or warming sensation

Precautions

Warning: Not advisable if pregnant, planning pregnancy, breastfeeding, or in cases of colitis, gastritis, or stomach or intestinal ulcers.

Do not exceed recommended daily intake. Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle.

Storage: Store in a cool, dry place out of reach of children.

General Statements

This product has not been tested on animals

Body Health

FDA Statement of Identity

Food Supplement

Suggested/Recommended/Usage/Directions

Adults take 1 capsule 3 times a day (children 12 and over take 1-2 capsules a day) with meals building gradually.

Storage

Storage: Store in a cool, dry place out of reach of children.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Oregano Oil by Higher Nature label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Oregano Oil label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Oregano Oil by Higher Nature

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Amounts shown are per serving.

Oregano Oil

Interacts with
208 drugs
50 mg per serving Form: Carvacrol, Thymol

Oregano is a common Mediterranean cooking herb that is also sold as a concentrated oil or supplement, often standardized for a compound called carvacr...

Oregano Oil monograph & interactions

Other (inactive) ingredients: Soya bean Lecithin, Vegetarian Capsule, Oregano (Origanum vulgare) flower essential oil. These complete the product’s ingredient list but are not active constituents.

Interaction report

Oregano Oil by Higher Nature Drug Interactions

Want to check YOUR meds against Oregano Oil?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
208Drugs
208 Moderate

Ingredients driving the most interactions

Oregano Oil 208

Individual Drug Interactions

The ingredients in Oregano Oil interact with 208 drugs. Click any drug to see the details.

1 of the 1 ingredient in Oregano Oil interact with drugs. Each result below shows which ingredient is responsible. Oregano Oil

Each ingredient & the kinds of drugs it affects

For each ingredient in Oregano Oil with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Oregano Oil2 drug types · 208 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, oregano might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro research shows that aristolochic acid isolated from oregano leaves has antithrombin activity. It has also been reported that oregano oil inhibits arachidonic acid-induced, and ADP-induced, platelet aggregation.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, oregano might increase the risk for hypoglycemia when taken with antidiabetes drugs.
In vitro and animal research shows that oregano extracts might lower blood glucose levels.

Likelihood Possible Evidence D
Oregano Oil full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Oregano Oil, from the product label.

Higher Nature

See all Higher Nature products
Name
Higher Nature Ltd
Street Address
10 Discovery Way
City
Horam, East Sussex
ZipCode
TN21 0GE
Web Address
highernature.com
Pharmacist Counseling Corner

Oregano Oil by Higher Nature: Common Questions

Does Oregano Oil by Higher Nature interact with any medications?
Yes. Based on its ingredients, Oregano Oil has a known interaction with 208 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Oregano Oil contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this oregano oil if I'm pregnant?
No—the safety data advises against medicinal or supplement amounts during pregnancy. Food amounts of oregano are likely fine, but concentrated supplements should be avoided. Talk with your doctor or pharmacist for personalized advice.
What's the most common side effect?
Gastrointestinal upset—upset stomach or digestive discomfort. It's generally well tolerated in food amounts, but concentrated supplements carry more risk.
Can oregano oil cause allergies?
Yes, rarely. Systemic allergic reactions, including anaphylaxis, have been reported in sensitive individuals. If you're allergic to oregano, thyme, basil, or other mint-family plants, avoid this supplement.
Is there proof oregano oil works for acne or colds?
No—the evidence we hold shows insufficient reliable evidence for acne, bronchitis, asthma, headache, and upper respiratory infections. The research either hasn't been done or isn't strong enough yet.
Is it safe to breastfeed while taking this?
Safety isn't established for supplement amounts during breastfeeding. Stick to normal food amounts of oregano if you're nursing, and talk with your doctor or pharmacist.

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

Not sure if Oregano Oil is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Oregano Oil label
Go deeper

The Full Monographs Behind Oregano Oil’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Oregano

Interacts with 208 drugs

Oregano is a common Mediterranean cooking herb that is also sold as a concentrated oil or supplement, often standardized for a compound called carvacrol. While lab studies suggest it may hav...

Read the full Oregano monograph →
Sources

Sources & How We Checked

Oregano Oil's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

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

The 12 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Oregano 12 references
  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  2. Benito M, Jorro G, Morales C, et al. Labiatae allergy: systemic reactions due to ingestion of oregano and thyme. Ann Allergy Asthma Immunol 1996;76:416-8. PubMed
  3. Chevallier A. Encyclopedia of Herbal Medicine. 2nd ed. New York, NY: DK Publ, Inc., 2000.
  4. Ciganda C, and Laborde A. Herbal infusions used for induced abortion. J Toxicol.Clin Toxicol. 2003;41:235-239. PubMed
  5. Futrell, J. M. and Rietschel, R. L. Spice allergy evaluated by results of patch tests. Cutis 1993;52(5):288-290.
  6. Tognolini, M., Barocelli, E., Ballabeni, V., Bruni, R., Bianchi, A., Chiavarini, M., and Impicciatore, M. Comparative screening of plant essential oils: phenylpropanoid moiety as basic core for antiplatelet activity. Life Sci. 2-23-2006;78(13):1419-1432. PubMed
  7. Goun, E., Cunningham, G., Solodnikov, S., Krasnykch, O., and Miles, H. Antithrombin activity of some constituents from Origanum vulgare. Fitoterapia 2002;73(7-8):692-694. PubMed
  8. Lemhadri, A., Zeggwagh, N. A., Maghrani, M., Jouad, H., and Eddouks, M. Anti-hyperglycaemic activity of the aqueous extract of Origanum vulgare growing wild in Tafilalet region. J Ethnopharmacol. 2004;92(2-3):251-256. PubMed
  9. McCue, P., Vattem, D., and Shetty, K. Inhibitory effect of clonal oregano extracts against porcine pancreatic amylase in vitro. Asia Pac.J Clin.Nutr. 2004;13(4):401-408.
  10. Ragi, J., Pappert, A., Rao, B., Havkin-Frenkel, D., and Milgraum, S. Oregano extract ointment for wound healing: a randomized, double-blind, petrolatum-controlled study evaluating efficacy. J.Drugs Dermatol. 2011;10(10):1168-1172.
  11. Singletary K. Oregano: overview of the literature on health benefits. Nutrition Today 2010;45(3):129-38.
  12. Silva MLAE, Lucarini R, Dos Santos FF, et al. Hypoglycemic effect of rosmarinic acid-rich infusion (RosCE) from Origanum vulgare in alloxan-induced diabetic rats. Nat Prod Res 2022;36(17):4525-4531.

See these in context on the Oregano monograph →

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

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