erectile dysfunction
"57 year old male. Maintaining an erections was sometimes becoming an issue during intercourse, sometimes being hard to start but then becoming less so.  Issue started to become frustration and so created "vicious circle of anxiety".  Taking 5mg or just 2.5mg of Cialis just 2 hours before intercourse ensures hard erection for full period. Do not take at any other time.  Effect of 5mg lasts for a day or so.  Can lead to slight headache the next morning but nothing else."