Vigore Gold (Sildenafil citrate) is the active ingredient in Vigore 100 MG Tablet, which is informally also known as the blue pill. It is used for the treatment of erectile dysfunction (ED), which is also called impotence, in men. Erectile dysfunction is a condition where a man is unable to achieve and/or maintain a penile erection adequate enough for sexual intercourse. It happens when there is a decreased blood flow to the penis.