Could a daily probiotic pill keep your heart in rhythm?

NCT ID NCT07568964

Not yet recruiting Disease control Sponsor: Ain Shams University Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether taking a daily probiotic capsule for 12 weeks can reduce the chance of atrial fibrillation (AF) returning in people who have just had a cardioversion (a procedure to restore normal heart rhythm). Fifty-six adults aged 40 and older with persistent AF will be enrolled. All participants will receive standard blood-thinning and heart-rhythm medications, and half will also get the probiotic. The main goal is to see if probiotics lower AF recurrence.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Probiotics (25 billion CFU per capsule daily for 12 weeks)
What this could lead to: If it works, this could point toward a simple, low-cost way to help prevent atrial fibrillation from coming back after cardioversion.
What could go wrong: This is a small, early-stage trial with only 56 participants, so results may not apply to everyone. The effect of probiotics on heart rhythm is still uncertain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ATRIAL FIBRILLATION (AF)

Contacts and locations

Locations

Ain Shams University's Hospital

Cairo, Egypt

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Other studies related to the condition(s) this trial covers.