08 Mar Impotence: when Viagra does not work
Impotence: when Viagra does not work (See the video) The marketing of Viagra (IPDE-5) in 1998, then other type 5 phosphodiesterase inhibitors (Levitra, Cialis) revolutionized the management of erectile dysfunction. In 20 years, 65 million Viagra prescriptions have been prescribed worldwide. Thirty-seven million men benefited from...