Heart Health

Olive

Also known as: Olea europaea, Oleuropein, Olive Leaf Extract

Evidence

Mediterranean botanical with oleuropein providing antimicrobial, cardiovascular, and antioxidant benefits. Traditional immune and heart tonic.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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The highest-scored Olive product in our catalog (86/100). Track dose and overlaps in the app.

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Every Olive product we have scored

#	Product	Score	Per serving
1	Complement Essential	86 A-	$1.48
2	Pure Encapsulations Olive Leaf Extract	86 A-	$0.71
3	Nutricost Olive Leaf Capsules	86 A-	$0.17
4	NOW Foods Olive Leaf Extract	85 A-	$0.12
5	NOW Foods Immune PostBiotic	82 A-	$0.36
6	Pure Encapsulations Vascular Relax	79 B+	$1.38
7	Pure Encapsulations MicroDefense w/ Oregano	79 B+	$0.41
8	Bluebonnet Nutrition WELLNESS SUPPORT	76 B+	$1.33
9	Herb Pharm Olive	76 B+	$0.33
10	Natural Factors Olive Leaf Extract	76 B+	$0.23
11	Life Extension Super Omega-3 Plus	75 B+	$0.66
12	NOW Foods Super Colostrum	75 B+	$0.41

Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.

Common questions

How much Olive should I take?

The typical range is 500-1000mg standardized extract daily. 8+ weeks for full effects

When should I take Olive?

Any time. Optional.

Which form of Olive is best?

Standardized extract — Oleuropein content specified. Other forms in the catalog: Capsules, Liquid extract.

Is Olive safe?

Commonly reported: GI upset, Headache, Die-off reaction possible. Serious warnings: May drop BP. Safe

Which Olive supplement scores highest?

Complement Essential, at 86/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.

Primary uses

Blood pressure
Cardiovascular
Antioxidant
Immune
Antimicrobial

How it works

ACE inhibitor-like activity
Vasodilation
Antioxidant (oleuropein)

Dosage

Typical range: 500-1000mg standardized extract daily
Timing: Any time
With food: Optional
Duration: 8+ weeks for full effects
Special populations: Blood pressure, cardiovascular health

Forms

Standardized extract
Capsules
Liquid extract

Safety

Common side effects

GI upset
Headache
Die-off reaction possible

Contraindications

Very low blood pressure

Products containing Olive

Top-scoring supplements in our catalog that list Olive on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Complement

Pure Encapsulations

Nutricost

NOW Foods

Evidence notes

Mediterranean cardiovascular support

Grade B: Some human trials support key claims; further confirmation needed.

Related in Heart Health

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.