For people with both type 2 diabetes and heart failure, taking metformin might help them live longer and avoid more hospital visits for heart problems than other diabetes medicines.

Evidence from Studies

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Repurposing metformin for cardioprotection: mechanisms and therapeutic potential across cardiovascular pathologies

Narrative Review

Human

2026

This study talks about how metformin might help the heart in general, but it doesn't compare it to other diabetes drugs to show if it's better at reducing deaths or hospital stays in diabetic patients with heart failure.

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Source Study

Repurposing metformin for cardioprotection: mechanisms and therapeutic potential across cardiovascular pathologies

Score: 1

DOI: 10.3389/fphar.2026.1681783

Similar Assertions

In diabetic rats and mice, a common diabetes drug called metformin helps protect the heart after a heart attack by making the body use insulin better and lowering harmful stress in the cells.

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A common diabetes drug called metformin may help protect the heart in animals with diabetes by reducing scarring, heart muscle thickening, and cell death, using specific biological pathways to do so.

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In rats that had a heart attack, taking metformin didn’t make the heart damage smaller or improve how well the heart pumped, but it did help reduce some of the scarring and thickening in the heart muscle.

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When rats have a heart attack and are given metformin, their hearts show less thickening and scarring, even though the size of the damage and overall heart function don’t get better or worse.

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