Sildenafil (Vigour (100 mg)) is a phosphodiesterase type 5 (PDE5) inhibitor, prescribed for erectile dysfunction (impotence). Erectile dysfunction is the inability to achieve or maintain an ...

He says it has its advantages but plans to be free of it in six weeks. For now, he can walk about 100 yards before running out of steam, the result of muscle lost during the months in bed after ...