No known drug interactions for the matched ingredients — not a guarantee none exist. Check your meds →
Dietary supplement

Olive Leaf Extract Ingredients & Drug Interactions

by LES Labs

Olive Leaf Extract label
See full label image
Capsule Category: Botanical
No known interaction
Clinical methodology reviewed by · Updated Sep 23, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Olive Leaf Extract 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 No known interaction

Olive Leaf Extract is a dietary supplement by LES Labs with 1 active ingredient. Its ingredients are commonly taken for heart health, high blood pressure, high cholesterol.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.

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HelloPharmacist Scorecard of Olive Leaf Extract by LES Labs

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: olive leaf extract, a concentrated form of compounds from the olive plant leaf. The capsules also hold rice bran flour and hypromellose (a capsule material), which are inactive ingredients.

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 Olive product and its label doesn't state a use — see Olive'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 we hold for olive leaf extract is insufficient to rate it for any of the conditions it's marketed for — osteoporosis, indigestion (dyspepsia), preventing respiratory infections after exercise, shingles, influenza, and osteoarthritis. That means human studies either don't exist, are too small, or don't yet show a clear benefit.

We simply don't have enough reliable data to say whether it works.

The evidence, ingredient by ingredient 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 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.

Olive leaf extract is generally well tolerated. The most common side effects reported in trials were headache and stomach discomfort.

One person in a trial reported skin and acne. Because olive oil and whole olives as food are very safe, but concentrated supplements are less studied, the safety of this extract over the long term isn't well known — your doctor should weigh in before you use it regularly.

If you're allergic to olive tree pollen, this product may trigger seasonal respiratory allergy. We hold no safety data for this ingredient in pregnancy or breastfeeding, so there isn't enough information to know either way.

Talk with your doctor or pharmacist for personalized advice if you're pregnant or nursing.

Side effects, ingredient by ingredient Olive

Meds to double-check

No known interactions
Known Interaction Concern · database check
No known interactions

No medication interactions are currently documented for the matched ingredients — that isn't a guarantee none exist.

Why this rating?
  • None of the 1 matched ingredient has a documented medication interaction on file.

No interactions are documented in our data for the ingredient we could check. That doesn't mean none exist — it means we hold no evidence of them yet.

Check your exact medications with the tool on this page, and if anything catches your eye, your doctor or pharmacist can give you the final word.

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. No medication interactions are currently documented, and safety information is well characterized.

If you're curious about olive leaf extract for a specific condition, know that we don't yet have solid evidence it works for any of them. It's generally well tolerated, and no drug interactions are documented — but the ingredient is less studied than you might expect for something from such a common food.

Have a conversation with your doctor or pharmacist before starting it, especially if you're pregnant, nursing, or using it long-term.

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 Oct 24, 2022.

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 Olive Leaf Extract, straight from the product label.

Brand LES Labs
Barcode (UPC) 013964841558
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Oct 24, 2022
DSLD ID 276526
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Olive Leaf Extract by LES Labs, 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)
Servings per container
60
UPC/BARCODE
013964841558
IngredientAmount% DV
Olive Leaf Extract700 mg--

Other ingredients: Hypromellose, Rice Bran Flour

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.
Suggested/Recommended/Usage/Directions

Suggested Use: Take one (1) capsule one to three times daily or as directed by a physician.

Precautions

Caution: Keep out of reach of children.

Those undergoing treatment for a medical condition should consult a physician before taking this supplement. Do not use if outer seal is missing or damaged.

Storage

Store in a dry, cool place.

Formulation

Made with non-GMO ingredients

Supports blood pressure & sugar levels already within normal range Promotes immune system health

Seals/Symbols

Manufactured in the USA cGMP Certified Manufacturing

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

FDA Statement of Identity

Dietary Supplement Standardized for 20% Oleuropein

Formula

Dietary Supplement Standardized for 20% Oleuropein

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

See for yourself

Olive Leaf Extract by LES Labs label

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

Olive Leaf Extract 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 Olive Leaf Extract by LES Labs

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Olive Leaf Extract

No known
interactions
700 mg per serving Form: Oleuropein

Olive comes from the same tree that gives us olives and olive oil, and its leaf and fruit contain antioxidant compounds like oleuropein and hydroxytyr...

Olive Leaf Extract monograph & interactions

Other (inactive) ingredients: Hypromellose, Rice Bran Flour. These complete the product’s ingredient list but are not active constituents.

Interaction report

Olive Leaf Extract by LES Labs Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Olive Leaf Extract. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.

The maker

Brand information

Manufacturer and brand details for Olive Leaf Extract, from the product label.

LES Labs

See all LES Labs products
Name
LES Labs, Inc.
City
Los Angeles
State
CA
ZipCode
91789
Phone Number
(877) 567-5370
Web Address
ww.leslabs.com
Pharmacist Counseling Corner

Olive Leaf Extract by LES Labs: Common Questions

Does Olive Leaf Extract by LES Labs interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Olive Leaf Extract. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Olive Leaf Extract 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.
What is olive leaf extract, and why is it in supplements?
It's a concentrated extract from olive plant leaves — different from olive oil or whole olives as food. Supplement makers market it for several conditions including bone health, digestion, immune function, and viral infections, but we don't have strong evidence it works for any of them yet.
What are the most common side effects?
Headache and stomach discomfort were reported most often in trials. One person reported skin and acne. Most people who use it don't report problems, but concentrated supplements are less studied than whole food sources.
Is this safe if I eat olives or olive oil?
Olives and olive oil as food are very safe. This product is a concentrated supplement, which is less studied — so the long-term safety isn't as well known. Check with your doctor or pharmacist before using it regularly.
Can I take this while pregnant or nursing?
We don't hold safety data for olive leaf extract in pregnancy or breastfeeding, so there isn't enough information to say. Talk with your doctor or pharmacist for personalized advice.
Will this interfere with my medications?
No interactions are documented in our data. That said, always run your exact medications through the checker on this page and mention this supplement to your doctor or pharmacist — they know your full health picture.
Can I take this for [a specific condition]?
The evidence we hold is insufficient to rate olive leaf extract for the conditions it's marketed for — including osteoporosis, indigestion, respiratory infections, shingles, flu, and arthritis. We don't have enough reliable data to say whether it works. Your doctor or pharmacist can help you decide whether to try it anyway.

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

Not sure if Olive Leaf Extract is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Olive Leaf Extract label
Go deeper

The Full Monographs Behind Olive Leaf Extract’s Ingredients

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

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

Olive Leaf Extract'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 2 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.

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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