“The Weekend Pill”
Whose ever concept it was but has really hit the nail on the head because not every one has a crystal ball 
to tell that what is going to happen in the future and one can not always anticipate that when they are going to get involved in a sexual activity or who would know before hand that what is coming there way that they take the pill prior to the action time?
And what is the guarantee that after what time it is going to start its effect. Imagine you’ve planned everything and you’ve even took the pill before the likely to happen but even after the completion of the estimated time for the pill to start functioning; it still doesn’t triggers the effect and needs some more time to start functioning? In short If The Moment is Ripe Would You Be Ready? And if the reply is not in affirmative then how would that be; definitely one word to describe that, DISASTER.
But as they say Cialis Is Here, so yes indeed the reply to all these question lies with Cialis because what distinguish it from rest of the two popular brands for Erectile Dysfunction is its ability to maintain the effect for 36 hours and you don’t have to schedule it; just let it happen the natural way. Its half-life is 17 hours as compared to 4 hours of other brands such as Viagra and Levitra.