Individual sildenafil Tablet has a lasting period of only 4 hours. However, Sildenafil has a bit longer lasting period. But Sildalist Strong has both sildenafil and Tadalafil in it, which means the lasting time will be more than both these drugs. On average, the lasting duration of Sildalist Strong Tablet is around 36 hours. This is a long time, but it isn’t the constant erection. Every time you get sexual arousal, the Sildalist in your body will help you get an erection and hold it.