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 Penicillin V Potassium + 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

Penicillin V Potassium + Probiotics

Q: Can I take Penicillin V Potassium and Probiotics together?

Yes, if you separate them in time. Penicillin V Potassium and Probiotics have a documented timing-sensitive interaction. Penicillin V Potassium 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

Penicillin V Potassium 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

Penicillin V Potassium and Probiotics

Pair type

Timing Sensitive

Evidence

Moderate

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

Timing SensitiveModerate evidence

What is happening. Penicillin V Potassium 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 Penicillin V Potassium 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