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

Maximum-Strength Olive Leaf Extract 100 mg Ingredients & Drug Interactions

by Swanson Superior Herbs

Maximum-Strength Olive Leaf Extract 100 mg label
See full label image
Capsule Category: Botanical
No known interaction
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Maximum-Strength Olive Leaf Extract 100 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 No known interaction

Maximum-Strength Olive Leaf Extract 100 mg is a dietary supplement by Swanson Superior Herbs 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.

Jump to a section

HelloPharmacist Scorecard of Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs

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 20, 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 (100 mg per capsule), standardized as Olea25 Hydroxytyrosol. The inactive ingredients are rice flour, hypromellose (a capsule material), L-leucine, and silica.

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 covers six conditions — osteoporosis, indigestion (dyspepsia), exercise-induced respiratory infections, shingles (herpes zoster), influenza, and osteoarthritis — but in each case the data is rated as insufficient to say whether it works. If you're considering this extract for one of those reasons, you won't find strong evidence backing it in our current data.

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 appears to be well tolerated overall in the trials we have on file. The most common side effects reported were headache and stomach discomfort.

One person reported skin problems and acne, and people sensitive to tree pollen may react to olive pollen seasonally. The main caution: olives and olive oil as everyday foods are very safe, but concentrated supplements like this one are less well studied, so talk with your doctor or pharmacist before use — especially if you're pregnant, nursing, or managing other health conditions.

The facts we hold don't include specific safety data for pregnancy or lactation, so you'll want personalized guidance from your own healthcare provider.

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.

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.

This is a single-ingredient olive leaf extract at full strength. If you're interested in it for bone health, digestion, immune support during exercise, or joint comfort, know that the evidence for those uses isn't solid yet.

It's generally well tolerated, but because concentrated supplements are less studied than the food forms, it's worth clearing it with your doctor or pharmacist first — especially if you're pregnant, nursing, or on other treatments.

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 Feb 25, 2019.

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 Maximum-Strength Olive Leaf Extract 100 mg, straight from the product label.

Brand Swanson Superior Herbs
Barcode (UPC) 087614142388
Net contents 60 Veggie Capsule(s)
Market status On market
Date entered into DSLD Feb 25, 2019
DSLD ID 184708
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Vegetarian, 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 Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs, 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 Veggie Capsule(s)
Maximum serving Sizes:
1 Veggie Capsule(s)
UPC/BARCODE
087614142388
IngredientAmount% DV
Olea25 Hydroxytyrosol Olive leaf extract100 mg--

Other ingredients: Rice Flour, Hypromellose, L-Leucine, Silica

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

Standardized Herbal Supplement

Formula

Olea25 Hydroxytyrosol 25% Hydroxytyrosol

Formulation

V Vegetarian formula

Seals/Symbols

V Vegetarian formula Guaranteed purity & potency

Precautions

Do not use if seal is broken.

Keep out of reach of children.

Storage

Store in a cool, dry place.

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take one veggie capsule per day with food and water.

General

SWH238 Rev 0 02 15 18

General Statements

To reorder, call toll free 1-800-437-4148 or visit our website at www.swansonvitamins.com

Brand IP Statement(s)

Olea25 Hydroxytyrosol is a trademark of Certified Nutraceuticals, Inc.

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

See for yourself

Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs label

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

Maximum-Strength Olive Leaf Extract 100 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 Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs

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

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

Olea25 Hydroxytyrosol Olive leaf extract

No known
interactions
100 mg per serving Form: Hydroxytyrosol

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...

Olea25 Hydroxytyrosol Olive leaf extract monograph & interactions

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

Interaction report

Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs Drug Interactions

We don’t currently list any known drug interactions for the mapped ingredients in Maximum-Strength Olive Leaf Extract 100 mg. 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 Maximum-Strength Olive Leaf Extract 100 mg, from the product label.

Swanson Superior Herbs

See all Swanson Superior Herbs products
Name
Swanson Health Products
City
Fargo
State
ND
ZipCode
58104
Phone Number
1-800-437-4148
Web Address
www.swansonvitamins.com
Pharmacist Counseling Corner

Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs: Common Questions

Does Maximum-Strength Olive Leaf Extract 100 mg by Swanson Superior Herbs interact with any medications?
We do not currently list a known interaction for the mapped ingredients in Maximum-Strength Olive Leaf Extract 100 mg. This does not guarantee none exist, so confirm with your pharmacist.
How can one product interact with so many drugs?
Maximum-Strength Olive Leaf Extract 100 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.
What's in this besides the olive leaf extract?
The active ingredient is 100 mg of olive leaf extract per capsule. The inactive ingredients are rice flour, hypromellose (a capsule binder), L-leucine, and silica. These are excipients — they help make and hold the capsule together, not active therapeutic ingredients.
Does olive leaf extract actually work for anything?
The research we have rates it as insufficient evidence for osteoporosis, indigestion, shingles, flu, bone and joint conditions, and respiratory infections during exercise. That means the studies don't yet show it works — or fail to show it — for these uses. More research would be needed.
What side effects might I get?
Olive leaf extract is well tolerated overall. The most common side effects in trials were headache and stomach discomfort. One person reported skin problems. If you're allergic to tree pollen, you may react to olive pollen seasonally.
Is it safe to take if I'm pregnant or breastfeeding?
We don't have safety data for pregnancy or lactation in our facts for this ingredient. Talk with your doctor or pharmacist — they can give you guidance tailored to your situation.
How is this different from cooking with olive oil?
Olives and olive oil as foods are very safe. This product is a concentrated supplement extract, and concentrated supplements are less studied than the food forms. That's why it's worth checking with your doctor or pharmacist before starting it.

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

Not sure if Maximum-Strength Olive Leaf Extract 100 mg 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.

Maximum-Strength Olive Leaf Extract 100 mg label
Go deeper

The Full Monographs Behind Maximum-Strength Olive Leaf Extract 100 mg’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

Maximum-Strength Olive Leaf Extract 100 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 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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