Viagra may help prevent the abnormal growth of the heart

Genuine Viagra, originally tested but rejected as a heart drug, stopped the overgrowth of hearts in mice that were implanted with heart failure in the study.

"A larger-than-normal heart is a serious medical condition, known as hypertrophy and is a common feature of heart failure that can be fatal" said cardiologist Dr. David Kass of The Johns Hopkins University School of Medicine, who led the study.

Viagra was the first of the new impotence drugs, it works by affecting a molecule called nitric oxide, which expands blood vessels.

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