The initial line of therapy for erectile dysfunction is often oral medicines. These drugs perform effectively and have minimal adverse effects for the majority of men who struggle to maintain an erection strong enough for intercourse (erectile dysfunction). Oral medications such as sildenafil (aurogra 100mg), vardenafil (super vilitra) and tadalafil (tadalista 20mg) work to treat erectile dysfunction by boosting the effects of nitric oxide, a substance your body naturally produces that relaxes the penis muscles. As a result of the increased blood flow, you might respond to sexual stimulation by getting an erection.