For olive leaf, the number that matters isn't the milligrams of leaf — it's the oleuropein it delivers. This **Olive Leaf Extract** gives you 167mg standardized to 18% oleuropein, about 30mg of the active polyphenol. That sits squarely in the 15–50mg oleuropein range used in the blood-pressure trials, so the standardization here is doing the real work.
The clinical evidence is moderate: olive leaf modestly lowers blood pressure in pre-hypertensive people and adds antioxidant and immune support. One capsule a day gets you to that studied oleuropein level — no need to stack servings.
The fit note: those trials ran on 500–1,000mg of total extract, so this single capsule suits everyday maintenance and mild support. If you're managing established high blood pressure, you'd likely want a higher daily dose alongside your doctor's guidance.
BioStacks
Ingredients (2)
Olive (Olea europaea) leaf extract
100%Dose
167 mg
Target
150–500 mg
Form
—
Olive
20 mgNot in our database
Other Ingredients (3)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Calcium SilicateAnti-caking
Inorganic compound used as an anti-caking and flow agent in powdered supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Take it anytime
Timing doesn't matter for this one — taking it consistently does.
With or without food
On the label
Suggested Use: As a dietary supplement, take one (1) capsule once a day before meal's with water.
General guidance based on the ingredients, not a substitute for the label or your doctor.
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.