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Dietary supplement

Oregano Oil 150 mg Ingredients & Drug Interactions

by Nature's Bounty

Oregano Oil 150 mg label
See full label image
Softgel Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Oregano Oil 150 mg 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 150 mg is a dietary supplement by Nature's Bounty 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 Oil of Oregano. 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 150 mg by Nature's Bounty

Ask about any prescription or over-the-counter medication and we check it for interactions with Oregano Oil 150 mg by Nature's Bounty — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Oregano Oil 150 mg by Nature's Bounty

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: oil of oregano at 150 mg per softgel. The supplement is filled out with inactive ingredients (olive oil, gelatin, and vegetable glycerin) that serve as the carrier and capsule material.

Does it work?

Couldn't assess
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 assessable

This is a single-ingredient Oregano product and its label doesn't state a use — see Oregano's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence isn't established yet. Our data shows insufficient reliable evidence to rate oregano oil for the uses on file—acne, bronchitis, asthma, headache, and upper respiratory tract infection.

That doesn't mean it doesn't work; it means quality studies haven't been done or published for these conditions.

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 is generally well tolerated in food amounts. As a concentrated supplement, however, it's stronger and less studied than culinary oregano.

The most common side effect is mild stomach upset. Rarely, people sensitive to oregano or related herbs (like thyme) have reported serious allergic reactions, including difficulty breathing and swelling of the lips and tongue.

During pregnancy, avoid medicinal or supplement doses of oregano; food amounts are likely fine. While breastfeeding, stick to normal food amounts—the safety of oregano supplements during lactation isn't established.

If you're pregnant or breastfeeding, talk with your doctor or pharmacist before taking this product.

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.

Check with your doctor or pharmacist before taking this product if you use blood thinners or antiplatelet drugs (such as warfarin or aspirin)—oregano oil may increase bleeding risk. Also check if you take diabetes medications; oregano may lower blood sugar and increase hypoglycemia risk.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Oregano Oil 150 mg is generally well tolerated, but you need to clear it with your doctor or pharmacist before taking it if you're on blood thinners, antiplatelet drugs, or diabetes medications. If you have a known allergy to oregano or other herbs in the mint family, skip it.

Talk it over with your own healthcare provider to make sure it fits your situation.

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 Aug 23, 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 150 mg, straight from the product label.

Brand Nature's Bounty
Barcode (UPC) 074312004827
Net contents 90 Softgel(s)
Market status On market
Date entered into DSLD Aug 23, 2021
DSLD ID 253232
Product type Botanical
Supplement form Softgel Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar 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 150 mg by Nature's Bounty, 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 Softgel(s)
Maximum serving Sizes:
1 Softgel(s)
Servings per container
90
UPC/BARCODE
074312004827
IngredientAmount% DV
Oil of Oregano150 mg--

Other ingredients: Olive Oil, Gelatin, Vegetable Glycerin

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.
General Statements

Nearly 50 years of trusted quality At Nature’s Bounty, we are committed to your health. For nearly 50 years we have been making trusted products, backed by science, and made with only the purest ingredients...guaranteed. So you can get the most out of life every day.

#1 Herbal Health Supplement brand

Nutrition Questions or Comments? Call 1-800-433-2990 Mon. - Sat. 9 AM - 7 PM ET

New!

Source: Nielsen xAOC 52 weeks ending 05/31/2018.

Formulation

Guaranteed quality Laboratory tested

Non-GMO, no artificial color, no artificial flavor, no artificial sweetener, no preservatives, no sugar, no starch, no milk, no lactose, no soy, no gluten, no wheat, no yeast, no fish. Sodium free.

Herbal health

Made In The USA with select ingredients from around the world

FDA Statement of Identity

Herbal Supplement

Suggested/Recommended/Usage/Directions

Directions: For adults, take one (1) softgel once or twice daily, preferably with meals.

Precautions

If you experience a heat sensation after using, this a normal reaction.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Do not use if seal under cap is broken or missing.

Storage

Store at room temperature.

Brand IP Statement(s)

Copyright 2018 Nature's Bounty, Inc.

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

See for yourself

Oregano Oil 150 mg by Nature's Bounty label

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

Oregano Oil 150 mg 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 150 mg by Nature's Bounty

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

Serving size1 Softgel(s) Dosage formSoftgel Capsule Servings per container90 Amounts shown are per serving.

Oil of Oregano

Interacts with
208 drugs
150 mg per serving

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

Oil of Oregano monograph & interactions

Other (inactive) ingredients: Olive Oil, Gelatin, Vegetable Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Oregano Oil 150 mg by Nature's Bounty Drug Interactions

Want to check YOUR meds against Oregano Oil 150 mg?

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

Oil of Oregano 208

Individual Drug Interactions

The ingredients in Oregano Oil 150 mg interact with 208 drugs. Click any drug to see the details.

1 of the 1 ingredient in Oregano Oil 150 mg interact with drugs. Each result below shows which ingredient is responsible. Oil of Oregano

Each ingredient & the kinds of drugs it affects

For each ingredient in Oregano Oil 150 mg 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.

Oil of Oregano2 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
Oil of Oregano full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Oregano Oil 150 mg, from the product label.

Nature's Bounty

See all Nature's Bounty products
Name
Nature's Bounty, Inc.
City
Bohemia
State
NY
ZipCode
11716
Phone Number
1-800-433-2990
Web Address
www.NaturesBounty.com
Pharmacist Counseling Corner

Oregano Oil 150 mg by Nature's Bounty: Common Questions

Does Oregano Oil 150 mg by Nature's Bounty interact with any medications?
Yes. Based on its ingredients, Oregano Oil 150 mg 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 150 mg 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 oregano oil if I'm pregnant?
The safety data advises against medicinal or supplement amounts of oregano during pregnancy. Food amounts are likely fine. Talk with your doctor or pharmacist about what's right for you.
What's the most common side effect?
Stomach upset is the most common side effect when oregano is taken orally. Serious allergic reactions are rare but have been reported in people sensitive to oregano or related herbs.
Is oregano oil proven to work for colds or coughs?
The evidence for oregano oil isn't established for upper respiratory infections, asthma, or bronchitis. We don't have reliable data showing it works for these uses yet.
Can I be allergic to oregano?
Yes. Allergic reactions to oregano are rare but can happen, especially in people sensitive to herbs in the mint family like thyme. Serious reactions—including difficulty breathing and swelling—have been reported.
Is this just regular oregano seasoning in a capsule?
No. This is concentrated oregano oil at 150 mg per softgel, which is much stronger than the oregano you'd sprinkle on food. Supplements are stronger and less studied than culinary amounts.

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

Not sure if Oregano Oil 150 mg is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

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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 150 mg label
Go deeper

The Full Monographs Behind Oregano Oil 150 mg’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 150 mg'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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