erectile dysfunction
"Age 38, overall excellent health: erectile dysfunction due to antidepressant (Zoloft 100mg/ day).  Was taking 1/2 of a 100mg tablet of Viagra.  Seemed to start working 45 minutes to one hour after taking.  Worked well, but 4 hours or so after taking it, it wore off.  Yes, was trying more than 1 hardy attempt!  This went on for almost a year.  Doctor switched me over to Cialis 20mg tablet.  Best to take on empty stomach with a full glass of water.  Full effect kicks in about 3 hours after taking.  Awesome stuff. Cialis has become my "weekend warrior" pill as it lasts almost the entire weekend."