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The three major erectile dysfunction drugs on the market, are all different types of drugs, but all work using similar methods of trapping blood in the penis. As with any medication, though, each person experiences different results with different drugs. Many men have switched to Cialis because Viagra or Levitra did not work well enough for them. Some men received good results with Viagra but switched to Cialis because of the larger window of opportunity – the advantage of having the ability to make love in a time frame as long as 36 hours.
It is important to note that there have been no official studies comparing these ED drugs. The following comparison is anecdotal and as such should be treated with caution. The quotes used here are from men who have used Cialis and were gathered from message boards on the world wide web:
One man writes: “I used Cialis for the first time tonight. After using both Levitra and Viagra, I am amazed at how well it works. Levitra and Viagra did not work for me at all. Cialis has been unbelievable. The intensity of the erections and frequency is mind-blowing. My wife is still in shock … the side effects are substantially less [than with Viagra and Levitra] as well.”
Another gentleman,
however, discovered that the side effects of Cialis were greater than
with Viagra: “I noticed that I was feeling ‘tingly’ down
there within 15 minutes with a little lightheadedness. I also noticed
that with Viagra I simply could NOT have an orgasm during the 5 or 6 hours
that it was my system. Cialis did not impede my orgasm.
However, I will switch back to Viagra after this test of a 20 mg dose
of Cialis. The next morning, about 4 a.m., I woke with a real bad headache.
I had no other drugs or even alcohol in my system. The headaches persisted
until the afternoon with lower back muscle soreness. I am disappointed
with Cialis for this reason. Also my inability to have an orgasm with
Viagra also meant that I had incredible staying power, which was more
important to me in pleasing my partner.”
But another posting on a web site indicated a distinct pleasure with the
product: “It works. On a recent vacation, my girlfriend and I had
sex every day … for a week and I think her head is still spinning.
My confidence is through the roof now. Try it.”
The table below provides a quick comparison of the 3 drugs:
| Viagra | Levitra | Cialis | |
| Manufacturer | Pfizer | Bayer & GSK | Lilly |
| Chemical Name | sildenafil citrate | vardenafil | tadalafil |
| How long it works | 4 hours | 4 hours | 36 hours |
| How it works | Increases blood flow to genitals | Increases blood flow to genitals | Increases blood flow to genitals |
| User reported benefits | Delayed
orgasm |
Fewer/ less severe side effects | Bigger window of opportunity allowing greater spontaneity. |
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