The NY times reported today that the manufacturer of Cialis is asking
the FDA for permission to market a one a day version of Cialis.  They
have tested a reduced dose and found that it is effective in maintaining
erections in a substantial number of men with erection problems.  They
are aiming at relatively young men who expect to engage in sex
relatively frequently.  Supposedly side effects ere minimal.

A month's supply would cost about $100.

This might make daily use of Cialis after surgery to encourage the
return of erections a more feasible strategy for some men.  Personally,
 I would be nervous about using it this way for long term ongoing use
rather than just when needed.  My urologist gave me some samples once,
and I found it worked as advertised, but it did induce some muscle aches
on one occasion.

Even with Viagra, I find  it still has some effect the next day.  But,
since I can sometimes manage without anything, I'm not sure it is a real
effect.  I wonder if anyone else has notice anything of this kind.