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The generic name is the official medical name for the active ingredient
of the medicine. An example would be Viagra - this is the well-known
brand name given by Pfizer to the generic medicine sildenafil. When
a doctor is writing a prescription, or a consumer is buying an over-the-counter
medicine, they may have a choice between a branded medicine and the
generic version of that medicine. Generic medicine are cheaper than brandname medicine, but the active ingredient (the ingredient that produces the therapeutic effect of the medicine) is the same in both.
There are only three oral drugs approved by the FDA to treat erectil disfunction: Levitra Viagra and Cialis. All work by increasing the flow of blood into the penis so that when a man is sexually stimulated, he can get an erection.
What Are the Differences Between Levitra, Cialis and Viagra?
Cialis, Levitra, and Viagra work by a similar mechanism to cause erections. There are subtle differences in how long the drug works and how quickly it works. Levitra works a little longer than Viagra. They both take effect in about 30 minutes. With Levitra, the effects last for about 5 hours. With Viagra, the effects last approximately 4 hours.
Cialis works a bit faster and the affects last much longer - up to 32 hours in some cases.
ED drugs can be safely prescribed to men with diabetes, high blood pressure, depression, heart disease, etc.
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