Key takeaways
- Probiotic Drops: Liquid-drop delivery: precise, sublingual, travel-ready.
- A postbiotic: the stable metabolites, not live bacteria. Same on day one as on day thirty.
- Derived from the Bacillus F strain, patented as WO2012060729 with five national patents.
- Liquid drops: 2 ml daily (two 1 ml presses), sublingual, two 30 ml applicators per 30-day protocol.
- Sits alongside NMN and spermidine rather than replacing them. It works on oxidative-stress defense, a different mechanism.
About the formulation
People searching for probiotic drops usually want two things: a liquid format instead of capsules, and something to do with beneficial bacteria. We can give you the first without qualification. The second needs a correction, and it is a correction in your favour.
Bacillus F is a postbiotic, not a probiotic. The applicator holds what the organism produces, not the organism. If you specifically need live cultures, say because you are rebuilding gut flora after antibiotics, this is honestly not the product. A multi-strain probiotic is what you want, and we would rather tell you that than take the order.
If what you actually wanted was the benefit people associate with beneficial bacteria, minus the fragility of live products, the comparison below is worth your time.
How it works
A probiotic works through a chain of events. The organisms have to survive the bottle, survive stomach acid, reach the intestine alive, and then establish themselves against whatever is already living there. Every link loses some. That is why those products carry CFU counts that decline over shelf life and results that vary so much from person to person.
A postbiotic removes the chain. The metabolites are produced in a controlled fermentation, separated, and stabilised. Nothing needs to survive anything. The dose you take is the dose that arrives.
In practice that means no viability anxiety and no wondering whether this batch is as active as the last. Keep the unopened applicator in the freezer and the one in use in the fridge, and it stays what it was. For a habit meant to run for months, that kind of reliability is usually what decides whether the habit survives.
There is one situation where both formats make sense together. If you are rebuilding gut flora after a course of antibiotics, a live-culture product is doing a job this preparation can't, and nothing stops you running both: different mechanisms, different goals, no known interaction. We just want you to know which product is doing which job.
Specifications
| Format | Sublingual applicator pen, clear cartridge with measured-dose tip |
| Active fraction | Cell-free Bacillus F metabolite complex (postbiotic) |
| Daily dose | 2 ml (two 1 ml presses), sublingual, morning |
| Protocol length | 30 days per protocol (two applicators) · 90 days recommended before re-testing |
| Storage | Freezer until opened, fridge once open |
| Origin | Fermented & bottled in the EU · strain from Yakutia permafrost |
| Documentation | Patent WO2012060729 · deposited genome sequence |
| Live organisms | None. Postbiotic metabolite fraction |


Compliance & standards
The strain and its applications are covered by international patent WO2012060729 plus five national patents, and the organism is sequenced and deposited, so every batch comes from the same defined organism. The patent scans and the comet-assay imaging are published openly on the Science page.
Marketed as a dietary supplement, not a medicine. Statements have not been evaluated by the FDA.
What to expect
Expect no gut-flora effect, because nothing in the applicator is alive to colonise anything. If a shift in gut flora is your goal, this is the wrong product and a multi-strain probiotic is the right one.
What you can expect is consistency: the same potency from the first press to the last, and no guessing about whether the product you paid for is still the product. For a habit meant to run for months, that is most of what matters.
Use cases
- Capsule avoiders who want a measured liquid dose from a precision applicator.
- People whose probiotic routine keeps breaking, because viability counts and expiry dates made it hard to trust.
- Format comparison shoppers deciding between live-culture and postbiotic approaches on the merits.
Not sure where it fits? Start with Bacillus F vs NMN, our most-read comparison.
Frequently asked
Related solutions
Start your 30-day protocol
Limited monthly batches. We confirm availability for your country within 48 hours.
