Could a simple mineral tame a racing heart? new trial tests magnesium for AFib

NCT ID NCT07632157

First seen Jun 24, 2026 · Last updated Jun 30, 2026 · Updated 3 times

Summary

This study tests whether giving magnesium along with the standard drug metoprolol can quickly lower a dangerously fast heart rate in people with atrial fibrillation or atrial flutter. About 196 adults in the emergency room will receive either magnesium or a placebo, plus metoprolol. The goal is to see if the combination works better than metoprolol alone.

What this could mean

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

Active substance

Magnesium sulfate (given intravenously) plus metoprolol

What this could lead to

If it works, this could provide a simple, low-cost way to quickly lower dangerously fast heart rates in people with atrial fibrillation in the emergency room.

What could go wrong

This is a small, early-phase trial (196 participants) testing a common mineral supplement. The benefit may be modest, and there are risks like low blood pressure or slow heart rate. Results may not apply to all patients.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation atrial flutter

As listed by the trial registrant

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

More trials for these conditions

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Email: •••••@•••••

Locations

  • Advocate Christ Medical Center Emergency Department (ACMC ED)

    Oak Lawn, Illinois, 60453, United States