Viagra: Little blue pill for male impotence approved 15 years ago

CLEVELAND - It is one famous pill. Wednesday marks a milestone for Viagra, the world's most famous "little blue pill."

It was 15 years ago, the Food and Drug Administration approved Viagra for sale as a treatment for male impotence.

Scientists at Pfizer accidentally created the drug while working to develop a pill that would treat high blood pressure and heart problems.

Early tests found it didn't help patients with those issues, but it did have an interesting side effect. Patients reported increased erections after taking it.

According to Viagra's website, in clinical studies 4 out of 5 men with erectile dysfunction, or ED, improved their erections with Viagra 100 mg, compared to only 1 out of 4 men taking sugar pills.

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