What kind of interaction is it?

Timing-sensitive: the two substances can be taken on the same day but should be separated by a minimum time window.

Is this interaction backed by published research?

Yes. NutriStack lists 1 citation row for the Fosfomycin + Probiotics pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Prescription·timing-sensitive·Moderate evidence

Fosfomycin + Probiotics

Q: Can I take Fosfomycin and Probiotics together?

Yes, if you separate them in time. Fosfomycin and Probiotics have a documented timing-sensitive interaction. Fosfomycin can suppress or kill bacterial probiotic organisms if taken at the same time, although selected probiotics may lower antibiotic-associated diarrhea risk.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored timing-sensitive row.

Timing Sensitive Moderate evidence

Fosfomycin can suppress or kill bacterial probiotic organisms if taken at the same time, although selected probiotics may lower antibiotic-associated diarrhea risk.

Supplement × Prescription

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Fosfomycin and Probiotics

Pair type

Timing Sensitive

Evidence

Moderate

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

Timing SensitiveModerate evidence

What is happening. Fosfomycin can suppress or kill bacterial probiotic organisms if taken at the same time, although selected probiotics may lower antibiotic-associated diarrhea risk.

Mechanism. Antibacterial exposure can reduce viable probiotic colony counts; the benefit is prevention of dysbiosis, not increased antibiotic efficacy.

Recommendation. Separate probiotic doses from the antibiotic by at least 2 hours when feasible; avoid probiotic use in severely immunocompromised patients or patients with central lines unless clinician-directed.

Stack Score

How it moves the number.

Effect on the composite score

If both Fosfomycin and Probiotics are in the same stack, this pair applies −5 to your Stack Score (per scored timing-sensitive row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1Hempel S et al. Probiotics for the prevention and treatment of antibiotic-associated diarrhea. JAMA. 2012.Needs sourceNo link

Check your full routine

One pair was the worked example.

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Open the interaction checker → Browse the research index