Amoxicillin and Probiotics: what the published research says
PubMed indexes 6 records that name Amoxicillin and Probiotics together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Amoxicillin and Probiotics. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
A study appearing here is not proof that an interaction exists. Two substances can be named together in a paper that never tested them in combination, and a source listed as background may cover only one of them.
Findings are quoted from each abstract as the authors wrote them. NutriStack has not re-analysed, pooled, or reconciled them, and they may disagree with each other.
NutriStack’s own interaction assessment for this pair is not published here. It has not completed qualified-human clinical review, so it is withheld from search. See the publication gate.
Nothing here is medical advice. Decisions about prescription medication and supplements belong with your prescriber or pharmacist, who can see your full regimen.
The research
6 studies naming Amoxicillin and Probiotics.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
Frontiers in cellular and infection microbiology · 2026 · PMID 42211655
Randomized Controlled Trial
“In conclusion, H. pylori infection disrupts oral microbiota, and 14-day VA therapy induces transient microbial perturbations. Adjunctive probiotics partially mitigate these disruptions, supporting oral microecological stability during eradication therapy, but do not achieve full restoration of microbiota balance to the level of uninfected individuals in the short term.”
Names both Amoxicillin and Probiotics in its title.
“However, for the control group and the group with antibiotic and probiotic treatment, the immunopositivity was significantly decreased. Probiotics based on bacillus spores administered simultaneously with the antibiotic offered the best restoration of the gut microbiota, a fact suggested by the absence of intestinal lesions, a normal food conversion ratio, and low expression of TLR4 and LBP immunomarkers.”
Names both Amoxicillin and Probiotics in its title.
“acidophilus. This study provides potential targets for screening probiotics regulators and lays a theoretical foundation for the elucidation of their mechanisms.”
Names both Amoxicillin and Probiotics in its title.
“In conclusion, amoxicillin and probiotics-amoxicillin were effective in preventing the development of experimentally induced acute diverticulitis, through their anti-inflammatory and immunomodulatory effects. Furthermore, this study has explored the role of probiotics in preventing DSS/LPS-induced acute diverticulitis, so it can be applied as a promising treatment option for acute diverticulitis disease.”
Names both Amoxicillin and Probiotics in its title.
Applied and environmental microbiology · 2021 · PMID 33483308
Human subjects23 participants
“Isolation of four insensitive strains and sequencing of their genomes revealed the identity of possible genes involved in AMC resistance mechanisms. Moreover, gut-simulating in vitro experiments revealed that one strain, i.e., Bifidobacterium breve PRL2020, is able to persist in the presence of a complex microbiota combined with AMC antibiotic.”
Names both Amoxicillin and Probiotics in its title.
International journal of antimicrobial agents · 2025 · PMID 40865583
Systematic ReviewMeta-AnalysisHuman subjects
“Adding probiotics, particularly S. boulardii or multi-strain combinations, to BQT significantly improves eradication efficacy and decreases treatment-related adverse events. PBQT represents a pragmatic optimization of current first-line regimens and supports its incorporation into clinical practice to improve H. pylori treatment outcomes.”
Names Amoxicillin and Probiotics together in an interaction, co-administration, or pharmacokinetic context.
Limitations
What this evidence cannot tell you.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
Selection. These records were found by searching PubMed titles and abstracts for both substance names alongside interaction and pharmacokinetic terms. Relevant work that phrases things differently, or is not indexed in PubMed, will be missing.
No effect size. The quoted conclusions are the authors’ words about their own study. We have not extracted effect direction or magnitude, and a single study’s conclusion is not a consensus.
Population mismatch. Findings in healthy volunteers, animals, or a specific patient group may not transfer to you, your dose, or your formulation.
Absence is not safety. Few published studies means the combination is under-studied, which is not the same as established as safe.
Nearby evidence
Other pairs with published research.
Pages covering Amoxicillin or Probiotics alongside a different substance.
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Amoxicillin, Probiotics, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
