Olive Leaf Extract
🛡 Contributes to immune system function
❤️ Helps support heart & circulation
🌿 Can protect cells from oxidative stress
£25.00
In stock
Feel-good promise: 60-day hassle-free returns
Overview
Olive leaves have been used to promote wellness for centuries, prized for their ability to support resilience, vitality, and overall health. Modern research has identified oleuropein as the key active compound, noted for its antioxidant properties and role in immunity support.
Our high-strength Olive Leaf Extract delivers 450 mg of standardised extract per capsule, the equivalent of 6,750 mg of whole leaf, providing a consistent 90 mg of oleuropein. This makes it a convenient way to support your immune system and general wellbeing, particularly during seasonal changes or times of increased demand on the body.
Who it's for
Adults looking to support their immune system year-round
Those wanting to maintain vitality and resilience during seasonal changes
Individuals interested in traditional botanicals with modern scientific backing
For best results
We recommend taking 1–2 capsules daily with water and food.
Consistency is key, regular daily use supports ongoing immune and antioxidant protection.
Pair with a nutrient-rich diet, good sleep, and regular movement for overall wellness.
Science & evidence
Olive leaf is rich in natural polyphenols, plant-based compounds with antioxidant properties that help protect cells from oxidative stress. Oleuropein, its main active component, has been researched for its role in supporting the body’s natural defences and maintaining overall vitality.
Scientific evidence shows that olive leaf extract contributes to normal immune function (via its nutrient profile and antioxidant support) and contains powerful plant polyphenols that help protect cells from oxidative stress.
Nutritional Information
Amount per capsule
| Ingredient | Amount | %NRV |
|---|---|---|
| Olive Leaf | 6750mg whole leaf equivalent | - |
| from extract | 450mg | - |
| providing Oleuropein | 90mg | - |
%NRV = Nutrient Reference Value
Pop, flip & supp
Our high-strength Olive Leaf Extract packs a powerful 90 mg of oleuropein into each capsule, giving you the same active compounds traditionally found in olive leaves, but in a convenient, concentrated form.
This formula is designed to support your immune system and help protect cells from oxidative stress, making it an easy daily choice for maintaining health and resilience. Whether you’re navigating seasonal changes, travelling, or just want to back up your everyday defences, Olive Leaf Extract is a plant-powered ally for your wellness routine.
Benefits of daily use
Supports normal immune function: Contributes to your body’s natural defences year-round.
Helps protect cells from oxidative stress: Rich in antioxidant polyphenols.
Maintains vitality and resilience: Traditionally used to promote energy and overall wellbeing.
What's inside our Olive Leaf Extract supplement?
Olive Leaf Extract
Maltodextrin
HPMC Capsule Shell
Ingredient list
Olive Leaf Extract, Capsule Shell: Hydroxypropyl Methylcellulose, Maltodextrin, Anti-Caking Agents: (Silicon Dioxide, Magnesium Stearate)
What we don’t include
We keep our formulas clean, purposeful, and backed by science. Every ingredient has a clear reason to be there.
That means no unnecessary fillers, artificial additives or empty claims. Every product is made with science-led formulas to deliver evidence-based nutrition you can trust, in forms your body can use.
No trends or gimmicks
Our founder, Liv, is a biomedical scientist. All our formulas are based on the latest research and clinical studies — not fads.
No fillers or additives
Every Supp product only contains ingredients that have a clear role in your health.
No low-quality ingredients
We source premium nutrients in research-backed doses, optimised for absorption.
No artificial colours or flavours
We keep our ingredients natural, so you get clean, effective nutrition.
What is Olive Leaf Extract?
Olive Leaf Extract comes from the leaves of the olive tree (Olea europaea), long valued in Mediterranean traditions for supporting overall health and vitality. The main active compound, oleuropein, is a polyphenol with antioxidant properties that help protect cells from oxidative damage.
In traditional use, olive leaf has been associated with cardiovascular support and immune resilience. Modern research focuses on its role in contributing to normal immune function and helping the body adapt to everyday challenges.
Our supplement offers a concentrated form of olive leaf in a vegan-friendly capsule.
FAQs
When should I take olive leaf extract?
Does it taste like olives?
Does olive leaf extract help with viruses?
Can olive leaf extract affect sleep?
Supp Olive Leaf Extract details
Our Olive Leaf Extract is a high-strength, plant-based supplement made from Olea europaea leaves. Standardised to deliver 90 mg of oleuropein per capsule, it provides the equivalent of 6,750 mg of whole olive leaf in a convenient vegan form.
Cautions:
Always consult your health practitioner before taking nutritional supplements, especially if you are taking medication or are under medical supervision. Not recommended for children, pregnant or lactating women. You should not take supplements as a substitute for a varied balanced diet or healthy lifestyle.
Allergy advice:
Although rigorous precautions are taken to prevent any cross-contamination, this product is manufactured in a facility that handles allergy-based materials.
Delivery & returns
We deliver across the UK with Royal Mail.
Orders are usually dispatched within 1 working day from our UK-based warehouse.
Free delivery on all orders and subscriptions over £30.
We want you to be completely happy with your purchase. With our feel good promise, you can return any unopened products for a full refund up to 60 days later.
Security, payment & privacy
All payments are processed securely using industry-standard encryption.
We accept all major debit and credit cards.
Your details are kept safe and never shared with third parties.
You’re in control of your data at all times.
Quality & safety commitment
All Supp supplements are manufactured in the UK under Good Manufacturing Practice (GMP) standards in BRCGS AA-certified facilities.
Every product is rigorously tested for purity, safety and quality.
We source high-quality, traceable ingredients from trusted suppliers.
Our formulations follow UK and EU regulations for food supplements.
Who are Supp?
We started Supp because health shouldn’t be complicated.
We are a UK-based supplement brand created to make better health simple. We offer well-sourced supplements, clear information and no unnecessary fillers.
With fast delivery, fair pricing and products you can trust, our goal is to help you choose smarter, whether you’re supporting energy, focus, recovery or overall wellbeing.
Olive Leaf Extract: Scientific Resources & Clinical Studies
Olive leaf extract and immune cell activity
Human cell studies show olive leaf extract increases natural killer (NK) cell activity, boosts CD8+ T-cells, and enhances interferon-γ production, supporting the body’s natural immune defences.
Broad Anti‑Inflammatory & Antioxidant Effects
A 2023 in vitro and in vivo review highlighting olive leaf extract’s dual nature in reducing inflammation and oxidative stress.
Therapeutic Potential of Olive Leaf Extracts: A Comprehensive Review
A recent overview detailing OLE’s phytochemistry and its roles in metabolic, inflammatory, neuro‑immune, and cardiovascular health—including relevant compounds beyond oleuropein.
Olive leaf extract shows potential to reduce histamine release and ease allergic inflammation
The newest evidence showing OLE can inhibit mast cell degranulation and reduce pro‑inflammatory cytokine release, substantially relevant for immune resilience.
Our Articles
Olive Leaf Extract: The Mediterranean Secret for Heart, Immunity, and Healthy Ageing
Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle.
If you are pregnant, breastfeeding, taking medication or have a medical condition, consult your doctor before use.
Quality you can trust.
Every Supp product starts with high-quality, responsibly sourced ingredients and ends with rigorous testing to make sure what’s on the label is exactly what’s in the bottle.
We manufacture to strict GMP (Good Manufacturing Practice) standards right here in the UK, with checks at every stage to ensure purity, safety, and consistency. From raw ingredient testing to final batch verification, we never compromise on quality.
You’ll always find clear, honest labelling with no unnecessary fillers, hidden ingredients, or inflated claims. Just clean, evidence-led nutrition designed to support your health goals.