I can get an erection and have strong ejaculations without any ED drugs. However, my erections are not sustained when I try to penetrate by having intercourse. I've had some decent results with Viagra in the past but it still does not give me the hardness that I really need for intercourse. I usually take 50mgs because I did not notice a difference when I took 100mgs. I am a muscular 235lbs. Could I have better results with Cialis. My doctor found no problems in my physical and my testosterone was fine.