Common antibiotic could shield hearts after attack
NCT ID NCT03508232
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether a short course of doxycycline, a common antibiotic, can prevent heart damage after a heart attack. 174 adults who had a severe heart attack received either doxycycline or a placebo twice daily for one week. Researchers then used MRI scans to check heart structure three months later, hoping to see less scarring and better heart function.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Doxycycline
- What this could lead to
- If it works, this could point toward a simple, short-term treatment to protect the heart after a heart attack and reduce the risk of future heart failure.
- What could go wrong
- This is a small pilot study, so results may not be conclusive. Doxycycline is not yet proven for this use, and the benefit may be small or absent.
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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Royal Alexandra Hospital
Edmonton, Alberta, T5H 3V9, Canada
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