One preparation · what people take it for

For staying yourself for longer

Why a bacterium survives 3.5 million years is the same question as why cells age, and it is the question Professor Brouchkov has been asking since 2009. Bacillus F is one preparation, not a range. Same drops, whatever you take them for. This page is what older people, and their children, told us.

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Bacillus F sublingual applicator pen on a dark marble ledge with melting ice chips, cool morning window light from the left. The longevity postbiotic supplement by Bacillus F OÜ, Tallinn, Estonia.

What people said

  • “For the first two or three weeks I did not notice any changes. Then, gradually, more energy. I began to do more at work and was less tired.”
    Kenji T., 47 · Since December 2022
  • “While taking it, I have never had a cold. Before, even before COVID, I had a viral infection with a fever once every six months.”
    Daniel M., 48 · Since December 2022
  • “I have more energy. Viral diseases bypass me. Blood pressure has returned to normal. Looking at me, my husband started taking it too.”
    Emma C., 40 · Since August 2023
  • “I gained energy, started getting enough sleep, and I haven’t had a single cold since I started, even though I work in drafts constantly.”
    Michael H., 47 · Since March 2024
  • “Before, we were sick every spring and autumn: me, my wife, our daughter. The spring passed without any illness. Autumn is going smoothly. My sleep has definitely improved.”
    Lukas F., 45 · Since February 2024
  • “My mother, 60+, is on her third month. Irritability has gone, deep and even sleep has returned. She says it’s as if she became 20 years younger.”
    James W., about his mother · Since 2022
  • “I haven’t been sick once in a year. No respiratory infections, not even a runny nose. Never in my 61 years have I been so happy.”
    Margaret D., 61 · Since February 2024

Individual experiences with a dietary supplement. Not medical advice; not evaluated by the FDA; not intended to diagnose, treat, cure or prevent any disease.

Petri dish photographed from above: a single white Bacillus F colony with frilled, snowflake-like edges on clear agar, grown from the Russian permafrost isolate

What the organism is actually studied for

Oxidative-stress defence and DNA repair. The comet assay on this site is that work: fragmented DNA streams out of a damaged cell like a comet tail, and treated cells show far shorter tails. The genome is sequenced and deposited; the strain is patented in six jurisdictions. No human longevity trial exists, for this or for anything else on the market.

What to expect, and when

Older people report the same things as younger ones (sleep, energy, fewer colds) and one thing more often: “I feel like myself again.” It takes a month or two.

Things people ask about this

It is a food supplement with no live bacteria and no drug in it. If you take prescription medication, ask your doctor, and tell us in the request. We read every one.

Yes, people do. Put their country and age in the request, not yours, so we can give you a straight answer about shipping.

There is no version. One preparation, one dose. Ageing well is the reason many people give for taking it, and this is what they told us.

Other reasons people come to us

Bacillus F is one preparation, not a range. Same drops, whatever you take them for.

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