Viagra (Sildenafil citrate) has achieved huge success. Everybody knows about it! There are a number of well known celebrities that are known to use Viagra: Paul McCartney, Rush Limbaugh, Richard Harris, Bob Dole, Lee Chapman, Vince Neal and even James Caan!
Cialis (Tadalafil) is highly effective like Viagra, but it is not as popular as Viagra yet.
Time to be taken before intercourse
Viagra - It is advised to take Viagra 1 hour before having sex. According to some studies Viagra can be taken anywhere from 30 minutes to 4 hours before having sex.
Cialis - Cialis tablets can be taken anywhere from 30 minutes to 12 hours before having sexual activity. Cialis soft tabs may be taken around 15 minutes prior to sexual activity.
How long will the effects of the medication last?
Viagra last about 4 hours in the bloodstream.
Cialis stays in the bloodstream much longer (it has a 17.5-hour half life) and can therefore be effective for more than a day, up to 36 hours!
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