Sildenafil Citrate (Generic Viagra) belongs to a group of medicines that delay the enzymes called phosphodiesterases from working too quickly. The penis is one of the areas where these enzymes work. Sildenafil Citrate is used to treat men who have erectile dysfunction (also called sexual impotence).
Tadalafil (Generic Cialis) is taken orally and helps men suffering from erectile dysfunction achieve and maintain an erection. Tadalafil works in much the same way as Sildenafil Citrate, but is much faster, lasting up to 36 hours. Tadalafil was initially introduced into Europe, and is now available worldwide.
Vardenafil HCL is a relatively new treatment for erectile dysfunction in men, and has quickly become as popular as the widely known drug (generic name: Sildenafil Citrate). Vardenafil HCL can help many men achieve and sustain an erection, thereby allowing men to restore their sex life to its former level.
Impotence
The myth among people about impotence is that it is considered as a psychological or mental problem, but medically impotence is caused by more physiological factors and less psychological.
In some cases though, impotence impedes sexual relation of males with their partners and results in a lower self confidence and esteem. In this case impotence is more related to psychological factors rather then physiological.
Causes of Impotence
Physiological causes ? Many people with diabetes, hypertension (high blood pressure), high cholesterol, prostate problem, heart attacks, strokes, hormonal imbalance, abdominal injury or surgery suffers a higher risk of impotence. People with habits of smoking, drugs and alcohol are also at risk of impotence.
Psychological causes ? Normally these are causes related to today?s life style and living habits. People suffering with work pressure, stress, anxiety, depression, tension, side effects of medicines and insomnia or sleeping disorder face impotence problem.