Gut bacteria cocktail could clear acne without pills or creams
NCT ID NCT06992154
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This early-phase trial tests a probiotic capsule containing five bacterial strains to treat moderate to severe acne in 34 adults aged 18 to 45. The idea is that improving gut health and reducing inflammation may calm acne breakouts. Researchers will also track blood sugar spikes to see if they are linked to acne flares.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- probiotic capsule containing Akkermansia muciniphila, Clostridium beijerinckii, Anaerobutyricum hallii, Clostridium butyricum, and Bifidobacterium infantis
- What this could lead to
- If it works, this could point toward a natural, gut-focused treatment for acne that reduces skin inflammation without antibiotics.
- What could go wrong
- This is a very early, small trial (34 people) testing a probiotic for acne. It may not show clear benefit, and results may not apply to everyone with acne.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
-
About 34 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
-
Mar 2027
An estimate. Start dates often move.
- Expected to finish
-
Jan 2029
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 45 years
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Participants aged 18 to 45 years. * Individuals with clinically diagnosed moderate to severe acne vulgaris, determined using standardized scales like the Global Acne Grading * System (GAGS) by Investigators of the study. * Willingness to provide informed consent and adhere to study protocols, including follow-ups and sample collections. Exclusion Criteria: * Recent and/or current antibiotic use: Individuals who have used antibiotics or probiotics within the last three months, as these can alter gut microbiota composition * Chronic gastrointestinal conditions: Participants with chronic gastrointestinal conditions such as Chron's disease, ulcerative colitis or irritable bowel syndrome (IBS). * Immune disorders: Individuals with known immune deficiencies or autoimmune diseases, which might affect inflammation levels and study outcomes. * Pregnancy or Lactation: pregnant or breastfeeding women, due to potential risk and hormonal changes that could influence acne and gut health. * Inability or unwillingness of subject or legal guardian/representative to give informed consent * Oral acne medications, including isotretinoin and spironolactone: these medications can significantly alter acne severity, making it difficult to isolate and accurately measure the effects of the probiotic intervention. Isotretinoin, a powerful retinoid, and spironolactone, a hormone-modulating medication, both have well-documented impacts on acne that could confound the study's results. Excluding participants using these medications ensures that changes in acne severity can be more directly attributed to the probiotic being tested, leading to clearer, more reliable findings on its efficacy. * History of metabolic disorders such as type 1 diabetes (DM1) and type 2 diabetes (DM2): DM1 and DM2 and their therapies can significantly alter baseline metabolic markers, such as glucose levels, insulin sensitivity, and inflammatory responses. Including such individuals might confound the results and make it difficult to attribute observed effects solely to the probiotics. * Chronic gastrointestinal conditions: Participants with chronic gastrointestinal conditions such as Crohn's disease, ulcerative colitis or irritable bowel syndrome (IBS). * Known hypersensitivity to \>4 first-line antimicrobial therapies against Akkermansia muciniphila, Clostridium beijerinckii, Clostridium butyricum, Anaerobutyricum hallii: Penicillin, Piperacillin, Tetracycline, Amoxicillin, Ampicillin * Known hypersensitivity to \>4 first-line antimicrobial therapies against Bifidobacterium infantis Bi-26TM: Gentamicin, Kanamycin, Streptomycin, Tetracycline, Erythromycin, Clindamycin, Ampicillin, Vancomycin * Known allergy or hypersensitivity to any of the following ingredients: Akkermansia muciniphila, Anaerobutyricum hallii, Bifidobacterium infantis, Clostridium beijerinckii, and Clostridium butyricum Other Ingredients: Chicory inulin and oligofructose (prebiotic fiber), hypromellose (vegetarian capsule), fruit \& vegetable juice (coloring agent), magnesium stearate (flow agent for encapsulation), and silica. * Immune disorders: Individuals with known immune deficiencies or autoimmune diseases, which might affect inflammation levels and study outcomes. * BMI of greater than or equal to 45: Excess adiposity is likely to impact sex hormones, inflammation, insulin resistance, and GLP-1 levels. These factors could confound the study outcomes. Additionally, excess adiposity is associated with hyperandrogenism and changes in sex hormone-binding globulin (SHBG), which may independently influence acne severity and skew results.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Acne are added.
Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
-
A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Gut bacteria may hold clues to dozens of diseases
- One laser, many skin fixes? trial tests 1550nm device on scars and wrinkles
- Can a light beam clear stubborn blackheads?
- Could a vaccine clear up severe teen acne?
- A new serum aims to clear acne and boost skin confidence
- Can coconut oil calm acne without irritating sensitive skin?