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Dietary supplement

Oregano Complete Ingredients & Drug Interactions

by Solaray

Oregano Complete label
See full label image
Liquid Category: Botanical With Nutrients
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 Complete 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 Complete is a dietary supplement by Solaray 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 Complete Blend. 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 Complete by Solaray

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

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Oregano Complete by Solaray

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

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 2 active ingredients.
  • “Oregano Complete Blend” is a proprietary blend — the label gives one combined amount (68 mg) without saying how much of each component you get.

Oregano Complete is a liquid supplement with 2 active ingredients: a Mediterranean wild oregano oil and extra virgin olive oil. The oregano oil is the active component; the olive oil serves as the carrier and base.

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

The label doesn't state a purpose we can grade — see each ingredient's own graded uses on its monograph instead.

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

The evidence for oregano oil's effectiveness in this product hasn't been established in our data. Oregano is listed for conditions including acne, bronchitis, asthma, headache, and upper respiratory infections, but all carry a rating of insufficient reliable evidence to rate.

The same applies to the olive oil — we hold insufficient evidence for osteoporosis, heartburn (dyspepsia), exercise-related respiratory infections, shingles, flu, and arthritis.

The evidence, ingredient by ingredient Oregano Olive

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Oregano oil is well tolerated in typical food amounts, but concentrated supplements like this one are much stronger and less studied. The most common side effect from oregano is stomach upset.

Rarely, systemic allergic reactions including anaphylaxis have been reported in sensitive people — one case involved a man who had respiratory trouble, swelling of the lips and tongue, and a dangerous drop in blood pressure after eating oregano-seasoned pizza. Olive oil in food is very safe; concentrated olive oil supplements are less studied but generally well tolerated, with headache and stomach discomfort reported occasionally.

Oregano supplements are possibly unsafe during pregnancy — stick to normal food amounts. Safety while breastfeeding isn't established, so talk with your doctor or pharmacist first.

Side effects, ingredient by ingredient Oregano Olive

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 2 matched ingredients 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 Oregano Complete, double-check with your doctor or pharmacist if you're on blood thinners (anticoagulants or antiplatelet drugs like warfarin or aspirin) — oregano oil may increase bleeding risk. Also confirm if you take diabetes medications, because oregano might lower blood sugar and raise hypoglycemia risk.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product is an oregano oil supplement for people interested in natural respiratory or digestive support, but evidence for its effectiveness isn't established in our data. If you take blood thinners or diabetes medications, check with your doctor or pharmacist before starting.

Pregnant or breastfeeding — talk it over first. Concentrated oregano oil is stronger than the herb in food, so allergic reactions are possible even if you've eaten oregano without issue.

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

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 24, 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 Complete, straight from the product label.

Brand Solaray
Barcode (UPC) 076280106725
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Sep 24, 2021
DSLD ID 255322
Product type Botanical With Nutrients
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Women (not pregnant or lactating)
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 Complete by Solaray, 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:
3 Drop(s)
Maximum serving Sizes:
3 Drop(s)
Servings per container
430
UPC/BARCODE
076280106725
IngredientAmount% DV
Oregano Complete Blend68 mg--
extra virgin Olive Oil0 NP--
Mediterranean wild Oregano Oil0 NP--

Other ingredients: None

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.
FDA Statement of Identity

Dietary Supplement

Formulation

Guaranteed potency

Alcohol free

Discussion: 100% vegetarian.

Wild harvested, As a natural product, aroma and taste may vary.

Formula

70% Carvacrol

Precautions

Warning: Do not use if safety seal is broken or missing.

Keep out of reach of children.

Keep your licensed health care practitioner informed when using this product.

Do not use if you are pregnant.

Suggested/Recommended/Usage/Directions

Directions: Use only as directed. Shake well before using. Mix 3 drops of oil in 1-4 oz of water or juice or apply topically as needed. Due to strength of product, heat sensation may occur.

Storage

Store in a cool, dry place.

Brand IP Statement(s)

Copyright 2013 Solaray.

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

See for yourself

Oregano Complete by Solaray label

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

Oregano Complete 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 Complete by Solaray

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

Serving size3 Drop(s) Dosage formLiquid Servings per container430 Amounts shown are per serving.

Oregano Complete Blend

Interacts with
208 drugs
68 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...

Oregano Complete Blend monograph & interactions

Other (inactive) ingredients: None. These complete the product’s ingredient list but are not active constituents.

Interaction report

Oregano Complete by Solaray Drug Interactions

Want to check YOUR meds against Oregano Complete?

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 Complete Blend 208

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Oregano Complete 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 Complete Blend2 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 Complete Blend full monograph & interactions
The maker

Brand information

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

Solaray

See all Solaray products
Name
Nutraceutical Corp.
Web Address
www.nutraceutical.com
Pharmacist Counseling Corner

Oregano Complete by Solaray: Common Questions

Does Oregano Complete by Solaray interact with any medications?
Yes. Based on its ingredients, Oregano Complete 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 Complete 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 if I'm pregnant or breastfeeding?
Oregano oil supplements are possibly unsafe in pregnancy — food amounts are likely fine, but talk with your doctor first. While breastfeeding, safety of concentrated supplements isn't established, so clear it with your pharmacist or doctor before starting.
What's the difference between oregano in food and this supplement?
This is concentrated oregano oil — much stronger than the dried oregano you sprinkle on pizza or pasta. Because it's stronger, concentrated supplements are less studied and carry a higher risk of side effects, especially allergic reactions in sensitive people.
What are the most common side effects?
Stomach upset is the most common side effect from oregano oil taken by mouth. Olive oil in the product occasionally causes headache or stomach discomfort. In rare cases, people sensitive to oregano or related plants (like thyme) have had serious allergic reactions.
Does this product actually work for colds or respiratory infections?
We don't have reliable evidence in our data that oregano works for upper respiratory infections, bronchitis, asthma, or related conditions. That doesn't mean it doesn't work — just that the evidence hasn't been established yet.
Is there any concern with the olive oil in this product?
Extra virgin olive oil as a food is very safe, but concentrated olive oil supplements are less studied. No drug interactions are documented for the olive oil in this product, though concentrated supplements deserve more caution than using olive oil in cooking.

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

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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 Complete label
Go deeper

The Full Monographs Behind Oregano Complete’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 → Herb & supplement monograph

Olive

Olive comes from the same tree that gives us olives and olive oil, and its leaf and fruit contain antioxidant compounds like oleuropein and hydroxytyrosol. Olive oil as part of a Mediterrane...

Read the full Olive monograph →
Sources

Sources & How We Checked

Oregano Complete'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 14 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 →

Olive 2 references
  1. Liccardi G, D'Amato M, D'Amato G. Oleaceae pollinosis: a review. Int Arch Allergy Immunol 1996;111:210-7. PubMed
  2. Somerville V, Moore R, Braakhuis A. The effect of olive leaf extract on upper respiratory illness in high school athletes: A randomised control trial. Nutrients. 2019;11(2). pii: E358. PubMed

See these in context on the Olive 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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