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The History of Cialis
Since the March 27th 1998 FDA approval of the prescription drug Viagra, Pfizer, enjoyed a five plus year monopoly of being the only prescription drug company that could distribute the erectile dysfunction drug Sildenafil Citrate. And as such sold over 1 billion dollars worth of the drug in just the first year of introduction. This [...]
How does Cialis work?
When a man is sexually stimulated, signals from the nervous system and the release of chemical messengers within the tissues of the penis allow him to have an erection. One of these chemical messengers, called cyclic GMP, causes the blood vessels in the penis to widen by relaxing smooth muscle tissue. This results in more [...]
What causes ED (Erectile Dysfunction)?
Erectile Dysfunction (ED) is the inability to get and maintain an erection of the penis for satisfactory sexual intercourse. In most cases, ED is a physical health problem, as opposed to psychological. It is usually caused by or associated with high blood pressure, high cholesterol, or diabetes, problems that are more often present as we [...]
