Metformin, a common diabetes drug, might protect the heart in two different ways: at low doses, it helps blood vessels work better; at high doses, it slows down a part of the cell’s energy system to prevent damage after a heart attack.

A common diabetes drug called metformin might help protect the heart from damage after a heart attack in animals—even if they don’t have diabetes—by turning on a cellular repair switch and stopping harmful leaks in heart cells.

A common diabetes drug called metformin, when given in small amounts, might protect the heart by improving blood vessel health and reducing heart damage — and it does this without lowering blood sugar.

Metformin, a common diabetes drug, might help protect the heart from damage caused by a chemotherapy drug called doxorubicin, without making the chemo less effective at fighting cancer.

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.