Best Overall
8.3Good
Classic psyllium fiber with some of the strongest evidence in the aisle for regularity and LDL cholesterol, at about 19 cents a teaspoon. Contains aspartame and dye.
3 videosGut Health & Probiotics
Pre-Alcohol Probiotic Drink
A genetically engineered probiotic shot that breaks down acetaldehyde in lab tests, but at $9 to $12 a bottle it has no published human trials behind it.
4.4
Poor
Nutrition Reviews score
Weighted across efficacy, quality, value, experience & transparency. See breakdown
- Form
- Liquid
- Serving
- 1 bottle (15 mL)
- Servings
- 3
- Per serving
- $12.00
Third-party testedcGMP facility
Gluten-freeDairy-freeSugar-freeVegan
Check price on AmazonShop on TikTok Shop4.2K soldBuy from the brand$36.00
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Last reviewed November 2, 2026 by the Nutrition Reviews Editorial Team · How we review
Our verdict
ZBiotics is a genuinely novel product: one clearly named engineered probiotic, carefully tested for purity, that does what it was built to do in a lab. Whether that translates into easier mornings is unproven, because no human trial has been published and acetaldehyde in the gut may matter less than alcohol itself. If you try it, think of it as a $9 to $12 experiment per night out, never as a reason to drink more.
Best for
- Occasional drinkers curious to try a novel, low-risk product on special occasions
- Travelers who want a tiny, shelf-stable, TSA-friendly bottle
- Shoppers comfortable with genetically engineered food ingredients
Skip it if
- Anyone expecting it to lower blood alcohol, reduce intoxication or make drinking safer
- People with a soy allergy (ZBiotics uses soy to grow the probiotic)
- Budget shoppers who want products with human evidence
How it scored
Our five-factor score out of 10. Factors are weighted by how much they matter to the outcome you’re paying for. Methodology
4.4
Poorout of 10
- Efficacy30%2.5
Key ingredients at clinically studied doses, and how strong the evidence is.
- Quality & Purity25%6.5
Third-party testing and certifications, manufacturing standards, contaminant testing, recall history.
- Value20%2.5
Cost per effective serving compared with category peers.
- Experience15%6.8
Taste, mixability, texture and tolerability from aggregated buyer and creator feedback.
- Transparency10%5.5
Full label disclosure (no proprietary blends), available COAs, honest marketing.
Our review
ZBiotics Pre-Alcohol is a 15 mL (0.5 fl oz) shot of water, natural flavors, salt, a preservative and Bacillus subtilis ZB183, a spore-forming probiotic that the San Francisco company genetically engineered to make acetaldehyde dehydrogenase. That enzyme turns acetaldehyde, a toxic byproduct of alcohol, into acetate. You drink one bottle before your first drink. It is shelf-stable and has zero calories, and a 3-pack costs $36 on ZBiotics' site, or $12 a bottle ($9 in a 12-pack). The label does not say how many bacteria each bottle holds.
The idea has some basis: gut bacteria convert part of the alcohol reaching the colon into acetaldehyde, and colonic levels can exceed those in blood. But the liver handles most alcohol and acetaldehyde, and a 2020 review found that hangover severity tracked blood alcohol, not acetaldehyde. ZBiotics' published evidence is a 2024 lab study by its own staff, showing the strain breaks down acetaldehyde in simulated gut conditions, plus a 90-day rat safety study it commissioned. No human trial has been published or registered, although the CEO told TechCrunch in 2018 that further health claims would wait for clinical trials. NIH's alcohol institute says no hangover remedy has been scientifically proven.
ZBiotics sells it as a food, markets it as "Proudly GMO" alongside the bioengineered-food symbol, and self-affirmed the strain's safety (GRAS) without notifying FDA. Its marketing promises "easier mornings" while stating that it does not lower blood alcohol or make drinking safer. Most buyers and creators say they woke up feeling better, but expectation and drinking habits are hard to separate from any effect, and common complaints are price and a sour, medicinal taste.
What’s inside
| Key ingredient | Per serving | Why it matters |
|---|---|---|
| Bacillus subtilis ZB183™ A spore-forming B. subtilis engineered to make acetaldehyde dehydrogenase (from the bacterium Cupriavidus necator); it broke down acetaldehyde in lab tests, but no human trial has been published and the count per bottle is not disclosed. | — | A spore-forming B. subtilis engineered to make acetaldehyde dehydrogenase (from the bacterium Cupriavidus necator); it broke down acetaldehyde in lab tests, but no human trial has been published and the count per bottle is not disclosed. |
Nutrition Facts
Serving Size 1 bottle
Amount Per Serving% Daily Value
Calories 0
Total Fat 0g0%
Sodium 3mg0%
Total Carbohydrate 0g0%
Protein 0g
* Percent Daily Values are based on a 2,000 calorie diet. † Daily Value not established.
Other ingredients: Water, Natural Flavors, Potassium Sorbate, Sodium Chloride, Bacillus subtilis ZB183™
No allergen statement on the panel. ZBiotics lists it as gluten-, nut-, dairy- and shellfish/fish-free, and says soy is used to grow the probiotic, so people with a soy allergy should not use it.
Testing & quality
ZBiotics publishes batch-release specifications (enzyme activity, spore viability, DNA-sequencing purity, microbial contaminants and heavy metals) and labels the product third-party tested, but names no lab or certification program and posts no lot certificates. It says products are made in an FDA-registered food facility under food GMPs.
Goals it supports
Creator video reviews
Independent creators reviewing Pre-Alcohol Probiotic Drink on YouTube and TikTok.
4 positive0 mixed1 critical
Pros & cons
What we like
- One clearly named engineered strain, B. subtilis ZB183, backed by a patent and a published lab study
- Publishes detailed batch-testing specifications, including DNA-sequencing purity, microbial limits and heavy metals
- Shelf-stable, zero calories, in a 15 mL TSA-friendly bottle
- Plainly states that it does not reduce intoxication or blood alcohol
- Most buyers and creators report feeling better the next morning
Watch-outs
- No published or registered human trial, although the company said in 2018 that health claims would wait for one
- $9 to $12 per bottle at brand prices, and $13 for a single bottle
- Rests on the idea that gut acetaldehyde drives how you feel the next day, which research has not confirmed
- Taste complaints are common, and the bacteria count per bottle is not disclosed
Questions buyers ask
Has ZBiotics been tested in people?
Not in any published study. ZBiotics' evidence is a 2024 lab study by its own scientists, showing ZB183 breaks down acetaldehyde in simulated gut conditions, and a 90-day rat safety study it commissioned. We found no human trial in PubMed or ClinicalTrials.gov as of October 2026. Customer reviews are mostly positive, but without a placebo group they cannot separate the drink's effect from expectation, sleep or how much people drank.
Is ZBiotics safe, and has FDA reviewed it?
It is sold as a food, not a supplement, and ZBiotics self-affirmed its strain as generally recognized as safe (GRAS) without filing a notice with FDA; FDA's GRAS inventory lists no notice for ZB183. A 90-day rat study found no adverse effects at high doses, and we found no recalls or FDA adverse-event reports. ZBiotics warns of possible nausea, bloating or cramps in sensitive people.
When should I drink it, and how should I store it?
ZBiotics says to shake and drink one bottle before your first alcoholic drink, the earlier the better, and that it does little if taken the next morning. It says the probiotic stays in the body for roughly 18 to 24 hours. Store bottles at room temperature with the cap on and do not refrigerate them; they expire 18 months after bottling.
Sources we checked (23)
- 1.zbiotics.com/products/zbiotics
- 2.zbiotics.com/products/zbiotics.js
- 3.zbiotics.com/pages/faqs
- 4.zbiotics.com/pages/how-it-works
- 5.zbiotics.com/pages/quality-pre-alcohol
- 6.zbiotics.com/blogs/journal/product-safety
- 7.zbiotics.com/pages/team-zb
- 8.pubmed.ncbi.nlm.nih.gov/39509360/
- 9.pubmed.ncbi.nlm.nih.gov/31781202/
- 10.pubmed.ncbi.nlm.nih.gov/39290381/
- 11.pubmed.ncbi.nlm.nih.gov/33113870/
- 12.pubmed.ncbi.nlm.nih.gov/8811162/
- 13.pubmed.ncbi.nlm.nih.gov/8727253/
- 14.clinicaltrials.gov/api/v2/studies?query.term=ZB183
- 15.hfpappexternal.fda.gov/scripts/fdcc/index.cfm?set=GRASNotices&sort=GRN_No&order=DESC&startro
- 16.fdli.org/2026/04/the-need-for-stronger-regulation-of-engineered-live-microbes-
- 17.techcrunch.com/?p=1679996
- 18.nutraingredients.com/Article/2024/09/06/ZBiotics-raises-12-million-in-funding-to-expand-li
- 19.niaaa.nih.gov/publications/brochures-and-fact-sheets/hangovers
- 20.amazon.com/dp/B0BX7C6H99
- 21.shop.tiktok.com/us/pdp/pre-alcohol-probiotic-drink-3-pack-by-zbiotics-for-holiday-gat
- 22.api.fda.gov/food/enforcement.json?search=recalling_firm:%22ZBiotics%22
- 23.api.fda.gov/food/event.json?search=products.name_brand:%22ZBIOTICS%22
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