For me Cialis didnt work very well. Levitra 20mg the best and most effective. Then Viagra and then Cialis in third place.

I would be also be interested in hearing others' experiences.

my doctor advised that I use Viagra for now because there is more data available regarding safe use.

How do they compare on prices

Any difference in the side effects between 10 and 20 mg of Levitra? Indigestion? Headache?

Price about the same for each i.e. between $9 and $10 per tablet.

Havent tried Levitra 10 mgs so cannot comment on side effects, but very minor side effects on 20 mgs, some flushed feeling, some nasal stuffiness but no headaches and no indigestion.

Cialis didn't do much for me.  I'll try Levitra next; the "V" has been pretty good but not earth-shaking (100mg dose).

I suggest you do a search covering the past year.  I, and others, have posted on this subject.  I believe my experiences are typical of what others experienced.

Cialis works for up to 36 hours.  I get a lot of sponteneous erections, but cannot count on Cialis working when needed. I get worse headaches with Cialis than Viagra or Levitra--and my headaches last the full 36 hours.  (My headaches with Viagra and Levitra are usually gone after a good nights rest.)

For me, Viagra works a little faster than Cialis or Levitra, but doesn’t last as long.  The erections I get with Viagra are stronger than those I get with Levitra or Cialis.

I prefer Levitra.  It lasts longer for me than Viagra, and the erection I get is more than adequate—althought not quite as strong as I get from Viagra.  I have fewer side effects with Levitra than with Viagra or Cialis.

For me, all three seem to work best when taken on an empty stomach.  I’ve found drinking alcohol or eating fatty foods decreases their efficacy.  

A lot of guys report side effects such as headaches, a flushed face, and dry mouth with all three.   For me they work in 30 to 60 minutes, depending on who knows what.  I only get spontaneous erections with Cialis, not Viagra or Levitra.  I take Tylenol at the same time I take Levitra or Viagra, and it lessens the frequency with which I get headaches.   I buy them in Tijauna; Levitra costs me less than Viagra.  I get about the same result with 10mg as 20 mg.  I know guys who take 10mg before round one and 10mg before round two.  (It seems cutting the pill in half is fine.)

These drugs can have serious side effects when taken with other medication, especially blood pressure medication.  (I’m told they work by lowering, not raising, your blood pressure.  Also that Viagra was a serendipitous find made when working on a new blood pressure medication.)  There was a post a while ago on TJ Amigos about some guy who went to Tijuana, bought some Vigra, and died.  So again I recommend you see a physician before taking any of these drugs.

I have felt no difference in 10 to 20mg of Levitra. I am anxious to try Cialis though. The big difference for me between Viagra and Levitra is that Viagra always produced a trmendous headache and Levitra did not.

I am not even sure I experience ANY effect from cialis. For me  Viagra is the strongest, but also has the strongest side effects (headache, heartburn, heart racing). I prefer levitra in 10 or 20 mg doses. From it I get zero side effects, but definitely feel it working.