Quercetin promoted as Covid preventative severely reduces fertility in mice
Could this also be happening in humans? (Updated 11/2/23)

Tim Truth’s Substack and the video above discuss two studies showing quercetin markedly impairs male and female reproduction in mice:
Beazley and Nurminskaya (2016). Effects of dietary quercetin on female fertility in mice: implication of transglutaminase 2
Ranawat et al. (2013). Quercetin impairs the reproductive potential of male mice
Quercetin is promoted and sold by the Wellness Company in the late Dr. Zev Zelenko’s “Z-Stack” as a zinc ionophore to reduce viral replication in cells and, as a result, prevent Covid or reduce its severity.
Although quercetin‘s fertility-reducing effects in mice might not be as profound in humans, we need to understand why that would be the case.
At a minimum, one must determine how the quercetin molecules, administration routes, and doses (per unit weight) used in mouse studies differ, if at all, from those sold over the counter to people.
What is the goal?
The Covid operation, including dissemination of the spike protein on the SARS-CoV-2 virus and encoded by the injections, involves apparent reduction of fertility primarily in countries where White Europeans live, say researchers.
Infertility surging after Covid shots: analysts
Watch now (1 min) | Investigators report Covid vaccines are associated with reduced birth rates, low sperm counts and motility, and elevated rates of miscarriages (i.e., spontaneous abortions, before 20 weeks gestation) and stillbirths (i.e., fetal demises, at least 20 weeks gestation).
Is infertility after Covid shots directed at Europeans and Americans?
Watch now (1 min) | Update 3/5/23: A reader sent me a threatening email concerning rabbis’ statements posted here about what some some Old Testament references mean. I have no idea about this issue apart from what quoted rabbis and other leaders say about it. For possible correction and clarification of this article and others, below are relevant portions of the reader’s email:
Should you take quercetin?
You must choose whether possible benefits of quercetin outweigh its potential harms in deciding whether to ingest it.
My family has decided to stay away from quercetin until we see convincing studies confirming it’s safe for human reproduction at doses sold as supplements.
Donate through Ko-Fi or Buy Me a Coffee.
Another agenda?
While Dr. Zelenko seemed like a wonderful person who helped many thousands of people, could his recommendation of quercetin be leading to more infertility through accelerated ovarian aging and reduced sperm count and motility, as found by these mouse studies?
Given an NIH insider scientist’s observation that Covid injections are a [redacted] military intelligence operation to kill and sterilize primarily Europeans, it’s perhaps just a coincidence Dr. Zelenko promoted Noahide laws, by which non-[redacted] people must follow [redacted] rules or be executed by beheading, according to authorities.
Dr. Zelenko advocates deadly Noahide laws, part 2
Watch now (10 min) | In the video above, Elizabeth Glass (Telegram: Stop Health Passports) warns of Dr. Vladimir “Zev” Zelenko’s promotion of Noahide laws, signed into US federal law in 1991 and by which rabbis say non-[redacted] people will be executed by decapitation for
And maybe it’s another coincidence those associated with the Wellness Company, like Dr. Peter McCullough, evidently don’t talk about the spike protein being an ethnic bioweapon and that Dr. McCullough says masks are just an “overreaction,” Covid shot harms are “unintentional,” and we should “forgive” and give “amnesty” to Covid killers.
Where Dr. McCullough is wrong: masks are imposed for submission, obedience training, and harm, not as “a hyperbolic, fear-driven overreaction” by leaders
Although Dr. Peter McCullough has been one of the most important voices resisting Covid tyranny and coerced vaccines, he oddly gives leaders too much credit — or he wants you to do so — by saying “fear” is driving their issuance of new mask mandates for Covid and monkeypox in an “overreaction.”
Dr. Peter McCullough flip-flops, now says Covid vaccine harms are unintentional, calls for “forgiveness” and “amnesty”
Arguably the most important Covid early treatment advocate and opponent of ineffective and harmful Covid injections, Peter McCullough MD has switched from calling the Covid vaccine operation “bioterrorism” to saying nucleic acid injections encoding an
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Covid injection mandators act for [redacted] rather than Americans or Europeans: analyst
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Is infertility after Covid shots directed at Europeans and Americans?
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The high doses of quercetin is probably the issue. Quercetin is definitely good for people's health and comes naturally in most fruits and vegetables. Something like 30-100 mg per day might be the most a person can get from food and is likely a better daily dose size instead of the 500 mg or 1,000 mg per day in most supplements.
The other question is does mouse fertility return if they stop taking the quercetin? Quercetin in a 500 mg daily dose might be fine when taken as medicine for short periods of time.
Interesting thoughts.
Here's another one - given that the majority of folk affected by the disease are past child bearing age is fertility really a problem if taking quercetin helps with said disease? You know, like young people not needing to be concerned about the potential effects of quercetin on fertility anyway as they don't get seriously ill with the virus in the first place and so wouldn't take it. ...
Just my mind a-wandering and wondering... not saying quercetin is a problem or benefit or not, just commenting on the concept in the bigger picture.