Dr Morton Walker has proved Olive leaf extract to be as effective as Acyclovir for all the Herpes viruses
Now we would all like there to be a cheap and safe supplement that has potent antiviral effects against herpesviruses, but in spite of the claims made for olive leaf extract, I have seen no evidence for antiviral effects for herpesviruses.
In fact, I spent several months going through a whole range of supplements, including OLE, and calculating their antiviral effect in humans, using a pharmacokinetic analysis, which allows you to convert in vitro results into in vivo efficacy.
Many supplements and drugs have antiviral effects in vitro (in a cell line in a test tube), but the question is whether those antiviral effects appear in vivo (in the body), when you actually take the supplement or drug orally.
In the case of olive leaf extract, there is
one in vitro study that shows OLE has antiviral effect for herpes simplex virus 1 when tested in a cell line in a test tube. The question is, will those antiviral effects hold up in vivo?
Well, the answer is no, from my pharmacokinetic calculation. OLE has no useful antiviral effects for HSV1 when you take it orally.
When I calculated the in vivo antiviral Potency Factor for various supplements and drugs, Valtrex (the prodrug for acyclovir) had a Potency Factor of
4,235 for Epstein-Barr virus, and a Potency Factor of
811 for HSV1.
But the antiviral Potency Factor of olive leaf extract for HSV1 was calculated as
0. Yes zero.
So this shows in the case of HSV1 at least that olive leaf extract is useless as an antiviral, whereas acyclovir / Valtrex are effective.
I cannot rule out the possibility that olive leaf extract may have some immunomodulatory effects which fight viral infection, as my calculation only takes into account direct antiviral effects. But as direct antiviral effects go, OLE appears to be no good for herpes simplex virus 1.
By the way, most of the supplements I performed pharmacokinetic calculations on turned out to be poor antivirals in vivo. Whereas most of the commercial antiviral drugs would have calculated Potency Factors typically in the 1000s, the antiviral Potency Factor for most supplements turned out to be pretty low, usually somewhere between zero and 100.
So sadly, as much as we would like there to be potent antivirals supplements, my pharmacokinetic calculations found that most supplements were very weak antivirals.
However, there were some exceptions:
Andrographolide (from the herb Andrographis paniculata) 40 mg three times daily has Potency Factor of
971 for Epstein-Barr virus.
Genistein (flavonoid supplement) in high doses of 2000 mg daily has a Potency Factor of
763 for cytomegalovirus.
Black soybean (Glycine max) 120 grams of beans twice daily has a Potency Factor of
500 for coxsackievirus B1 (though this is based on an approximate pharmacokinetic calculation, so take this result with a pinch of salt).
So the above were the only cases where I found supplements had fairly strong antiviral effects.