Vega 100mg tablet increases blood flow to the penis by relaxing the muscles in penile blood vessels. It helps to get an erection only if the person is sexually. How does the Vega100 work so effectively?. As a result, sexual arousal results in rock hard, prolonged penile erection for peak sexual performance. The compound Slidenafil in the tablet directs the flow of adequate blood to flow into the blood vessels in the penis to achieve perfect erection each time the tablet is consumed.