NSTK · 01.2026Independent supplement reference
NutriStack
Edition 1.0Updated August 1, 2026

Supplement × Supplement·Evidence index

Iron and Probiotics: what the published research says

PubMed indexes 5 records that name Iron 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.

Read this first

An evidence index, not guidance.

Every statement below is attributed to a named, dated, linked source.

This page lists published research relevant to Iron 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.

The research

5 studies naming Iron and Probiotics.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Iron oxide nanoparticles carried by probiotics for iron absorption: a systematic review.

Journal of nanobiotechnology · 2023 · PMID 37038224

Meta-AnalysisSystematic ReviewHuman subjects

“To ensure a sufficient iron level in the enterocyte, probiotics with the capacity to attach to the gut wall transport IONPs into the enterocyte, where the maghemite nanoparticles are released.”

Ciont et al. · Authors' conclusion

Names both Iron and Probiotics in its title.

Effects of probiotics on immunity and iron homeostasis: A mini-review.

Clinical nutrition ESPEN · 2022 · PMID 35623819

ReviewHuman subjects

“Recently, some studies have been conducted to further investigate the effects of probiotics on immunity and iron homeostasis. This mini review discusses about some important factors that can improve the management of IDA.”

Fikri et al. · From the abstract

Names both Iron and Probiotics in its title.

Green synthesis, characterization and applications of iron and zinc nanoparticles by probiotics.

Food research international (Ottawa, Ont.) · 2022 · PMID 35400469

Review

“Considering the nutritional relevance of iron and zinc, a thorough approach about the synthesis of iron and zinc NPs by probiotics was addressed, including the factors affecting the synthesis processes, the mechanisms of synthesis, and the physical and chemical characterization of NPs.”

Gomez-Zavaglia et al. · From the abstract

Names both Iron and Probiotics in its title.

Efficacy of probiotic, prebiotic, and synbiotics supplements in individuals with anemia: a systematic review and meta-analysis of randomized controlled trials.

BMC gastroenterology · 2024 · PMID 39716076

Systematic ReviewMeta-AnalysisHuman subjects120 participants

“There is moderate-quality evidence suggesting that probiotics, prebiotics, and synbiotics may improve anemia management, particularly by enhancing Hb levels. Further high-quality RCTs are required to explore the specific role of synbiotics in anemia management, including their comparative efficacy against probiotics and prebiotics alone, and their impact on gastrointestinal factors such as gut microbiota modulation and inflammation reduction.”

Hu et al. · Authors' conclusion

Names Iron and Probiotics together in an interaction, co-administration, or pharmacokinetic context.

Iron Absorption from an Iron-Fortified Follow-Up Formula with and without the Addition of a Synbiotic or a Human-Identical Milk Oligosaccharide: A Randomized Crossover Stable Isotope Study in Young Thai Children.

The Journal of nutrition · 2024 · PMID 39179207

Randomized Controlled Trial

“In young Thai children, the addition of a synbiotic (GOS + L. reuteri) or 2'FL to iron-fortified FUF did not impact FIA from a single serving. The study was registered at clinicaltrials.gov as NCT04774016.”

Scheuchzer et al. · Authors' conclusion

Names Iron 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:

NutriStack

Track what you actually take.

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 Iron, 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.