Antibiotics are the wonder drug of the last century, but is their time coming to an end?

Though immunisation fairly claims the crown for saving the most lives, antibiotics have allowed us to live without the fear of life-threatening infections. Gangrene, Leprosy and Tuberculosis - all were killers and now are treatable, but are the good times coming to an end?

A study published in the Journal of the American Medical Association casts a little doubt on the safety of Sildenafil, a commonly used erection tre