Viagra may reduce cancer metastasis, study shows

Viagra was originally developed to treat high blood pressure and chest pain caused by reduced blood flow to the heart, but over the past three decades it has become the world's best-known therapy for erectile dysfunction. In the future, this blockbuster drug may find yet another use. In a study published recently in Cancer Research, scientists in the lab of professor Ayelet Erez at the Weizmann Institute of Science found that sildenafil, Viagra's active ingredient, may restrict cancer metastasis through a newly discovered biological mechanism.

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