Best Olive Leaf Extract
The best olive leaf extract we track, ranked by real cost-per-dose — not paid placements. Across 6 brands, 1 are third-party tested in a public registry.
Updated October 2026prices checked what’s changed
How much does Olive Leaf Extract cost?
Olive Leaf Extract costs a median $0.15 per serving — the cheapest of the 7 we can price per dose is $0.09 per serving. Prices checked October 2026.
Ranked across 7 products · prices checked Oct 10, 2026
How we rank
We rank by cost-per-dose — price ÷ servings, normalized to the daily dose — so bottle sizes and strengths compare fairly. Prices are scraped at publication and re-checked when the catalog refreshes (see the “Prices checked” stamp above). There is no paid placement and no kickback for ordering. Full methodology · Editorial standards.
When cheapest ≠ best value
The cheapest bottle isn’t automatically the best value: a low per-bottle price usually just means fewer servings or a smaller dose per serving. That is exactly what cost per dose normalises, which is why the ranking above is ordered by it rather than by sticker price. A bigger bottle isn’t automatically cheaper per dose either — this list already ranks by cost per dose, so a larger count only wins if it truly costs less per serving. Compare Olive Leaf Extract forms.
Our data on this: how much the big bottle saves per serving · the gummy tax · the form premium · the price spread.
Full ranking by cost per dose
Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly.
- See offer#1Best valueNOW Foods Supplements, Olive Leaf Extract 500 mg, Free…
capsule · 500mg · 120 servings · $11.30
$0.09per serving - See offer$0.11per serving1.2× #1
- See offer$0.14per serving1.5× #1
- See offer$0.15per serving1.6× #1
- See offer$0.16per serving1.6× #1
- See offer$0.19per serving2.1× #1
- See offer$0.45per serving4.8× #1
| # | Product | Form · dose | Tested | Servings | Price | $ / serving | Buy |
|---|---|---|---|---|---|---|---|
| 1 | NOW Foods Supplements, Olive Leaf Extract 500 mg, Free…Best value | capsule · 500mg | 120 | $11.30 | $0.09 | See offer | |
| 2 | Swanson Olive Leaf Extract Immune Health | capsule · 500mg | 120 | $13.50 | $0.11 1.2× #1 | See offer | |
| 3 | Nutricost Olive Leaf Extract (20% Oleuropein) 750mg | capsule · 750mg | 90 | $12.95 | $0.14 1.5× #1 | See offer | |
| 4 | Swanson Olive Leaf Extract Immune Health | capsule · 500mg | 240 | $36.08 | $0.15 1.6× #1 | See offer | |
| 5 | HerbalFactors by Natural Factors | capsule · 500mg | USP | 90 | $13.97 | $0.16 1.6× #1 | See offer |
| 6 | Seagate Products Olive Leaf Extract 450 mg 250 Capsules | capsule · 450mg | 250 | $48.38 | $0.19 2.1× #1 | See offer | |
| 7 | Barlean's Olive Leaf Extract Softgels 90mg Oleuropein | softgel · 90mg | 120 | $53.99 | $0.45 4.8× #1 | See offer |
See also: Olive Leaf Extract basics · all best-value rankings
Olive Leaf Extract brands we compare — which are third-party tested?
1 of the 6 brands ranked above appear in an independent certifier's own public registry. A certification confirms the label matches the contents — it says nothing about how well the supplement works, and an uncertified brand is not automatically worse.
Frequently asked
How much does Olive Leaf Extract cost?+
The cheapest olive leaf extract we track is $0.09 per serving ($11.30 for 120 servings), against a typical $0.15 per serving across the 7 we can price per dose — about $2.83 a month at the cheapest. That's real cost per dose from live Amazon US prices as of October 2026, not the sticker price.
What is the best-value Olive Leaf Extract supplement?+
NOW Foods Supplements, Olive Leaf Extract 500 mg, Free Radical Scavenger*… — $0.09 per serving ($11.30 for 120 servings), the lowest cost-per-dose olive leaf extract in our Amazon US catalog as of October 2026.
How much does Olive Leaf Extract cost per day?+
The cheapest olive leaf extract we track works out to $0.09 per serving, against a typical $0.15 per serving across the 7 we can price per dose. Retailers and review sites list a price and a serving size but rarely divide it out — this is what a day actually costs, as of October 2026.
What is the typical cost per dose for Olive Leaf Extract?+
About $0.15 per serving across the 7 olive leaf extract products we can price per dose (combination products are left out — their single label dose belongs to whichever ingredient the product is built around) — the cheapest we track is $0.09 per serving, with most falling between $0.13 and $0.17.
What is the highest-quality Olive Leaf Extract supplement?+
Of the 6 olive leaf extract brands ranked here, 1 hold a third-party certification we could verify in a public registry: Natural Factors (USP Verified). Certification means an independent lab confirmed the label matches the contents and screened for contaminants — it does not rate how well the supplement works. The cheapest certified option is HerbalFactors by Natural Factors at $0.16 per serving.
Which Olive Leaf Extract brands are third-party tested?+
Natural Factors — USP Verified. We only count a brand as tested when it appears in the certifier's own public registry (USP Verified, NSF Certified for Sport, Informed Choice), never on a claim printed on the label. The remaining 5 brands on this page have no certification we could verify.
Which Olive Leaf Extract is the top rated?+
We don't republish marketplace star ratings — they belong to the retailer, they move constantly, and a 4.6 average tells you nothing about what is in the capsule. The two things you can verify are what a dose costs and whether an independent lab checked the label. On both counts, HerbalFactors by Natural Factors stands out: USP Verified certified at $0.16 per serving.
What dose of Olive Leaf Extract do these supplements come in?+
The olive leaf extract products we track range from 90mg to 750mg per serving. We rank by cost per serving so you can compare value across strengths — check the label for the dose that suits you.
Independent testing
1 of 6 tracked Olive Leaf Extract brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
References & sources
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.