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Olive Leaf Extract Benefits: What Trials Used and What a Blend Line Allows
Olive leaf extract has been studied mainly for blood pressure, with trials using 500 to 1,000 mg a day. The Reviralis label lists olive leaf powder, not extract, 12th in a 661 mg blend. Its ceiling is 55.08 mg per serving, far below those trial doses. The real amount is not printed.
Written by the Goreviralis label deskUpdated · 5 min read
What are the olive leaf extract benefits shown in trials?
The best-known research is about blood pressure. Memorial Sloan Kettering reports that trials used 500 to 1,000 mg of olive leaf a day, and that it may lower blood pressure and blood sugar (MSK About Herbs, Olive Leaf).
That second half is the catch. A product that can lower blood pressure can also stack with blood pressure medicine. A product that can lower blood sugar can stack with diabetes medicine. The same effect that earns the headline is the reason to ask a pharmacist.
None of these studies tested Reviralis or looked at herpes.
Is olive leaf powder the same as olive leaf extract?
No. A powder is the dried leaf ground fine. An extract is made by pulling compounds out with a solvent and concentrating them, so a small amount of extract can stand in for more leaf.
The Reviralis label says "olive leaf powder." Most trial products are described as extracts, often with a stated level of a marker compound. The label gives no marker level, so it cannot be matched to any trial.
| Point | Trials (MSK) | Reviralis label |
|---|---|---|
| Form | Leaf products, mostly extracts | Olive leaf powder |
| Daily amount | 500 to 1,000 mg | Not printed |
| Ceiling per serving | Not applicable | At most 55.08 mg |
| Marker compound level | Often stated | Not printed |
How much olive leaf can the Reviralis blend hold?
At most 55.08 mg per serving of two capsules. Olive leaf powder is the 12th of 18 names in a 661 mg proprietary blend.
US rules list blend members from most to least by weight (21 CFR 101.36). The 12th name cannot outweigh the 11 above it, so its ceiling is 661 divided by 12. The real figure could be lower, and the label does not say.
Set that beside the trials: 500 mg is about nine times the ceiling.
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See packsWho should ask first about olive leaf?
People who take blood pressure or diabetes medicine, and anyone with low blood pressure, should ask a clinician before any olive leaf product.
"This capsule lists olive leaf powder in a blend. Could it add to my blood pressure or blood sugar medicine?" Name each prescription.
The label itself asks you to consult your healthcare provider before use if you are pregnant or nursing, have a medical condition, have a history of seizures, or take prescription medicine. Not for anyone under 18. Keep taking any prescribed medicine, including an antiviral, unless your prescriber says otherwise.
Dizziness, fainting or a racing heart need prompt care; chest pain or trouble breathing means 911.
So is olive leaf a reason to buy Reviralis?
Not by itself. The evidence is about higher amounts of olive leaf than the blend can hold, and no source ties olive leaf to herpes outbreaks.
If you like the idea of a one-bottle multi-ingredient capsule, weigh the printed vitamin and mineral lines on the supplement facts page and the math on the blend page. For the blood pressure side, read blood pressure medicine and supplements. For the other end of the blend, see grape seed extract.
See also all 40 names. No source tested Reviralis itself.
FAQ01
Reviralis questions people ask
Does olive leaf lower blood pressure?
It may. Memorial Sloan Kettering notes blood pressure trials using 500 to 1,000 mg a day. Those were studied products, not Reviralis. If you take blood pressure medicine, ask your prescriber before adding any olive leaf.
How much olive leaf is in Reviralis?
The label does not print it. Olive leaf powder is 12th of 18 names in a 661 mg blend, so it can hold at most 55.08 mg per serving of two capsules. It may hold less.
Can olive leaf interact with medicine?
Yes, possibly. It may lower blood pressure and blood sugar, so it can add to medicines for either. Ask a pharmacist to check your list before you start.
Does olive leaf help with herpes?
No. No cited source shows olive leaf prevents or treats herpes outbreaks. Prescription antivirals are the proven care, and a clinician decides on them.
Is olive leaf powder weaker than extract?
Usually, gram for gram, since an extract is concentrated. Without a stated marker level on the label, a powder line cannot be matched to an extract trial.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, CDC, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Reviralis. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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