Viagra Vs Other Erectile Dysfunction Drugs
This is a debate which is often under discussion as if some body wants to find a cure for his erectile dysfunction, which brand to opt for or doctors always deliberate keeping in view certain issues that what would suite the patient best. So the discussion is more need based than facts and figures which is in reality contrast to conventional thinking.
All the major brands including Viagra has the same mechanism for functioning, which is the inhibition of PDE 5 enzyme which causes the arteries to relax which causes the increased blood flow that causes the erection to occur. But there are some factors which distinguish them from each other and that is what which earns them their individuality.
Now keeping in view all those factors we are going to analyze where Viagra lies. Viagra enjoyed an 
unchallenged dominance for 7 long years and then some other brands jumped into the competition and caused some very serious damage to the sales of Viagra as they had something extra to offer specially the Eli Lilly’s Cialis, which had an amazing factor of last effect for 36 hours compared to Viagra’s 4 hours and that even worked faster than Viagra i.e. 30 minutes with or without empty stomach where Viagra worked faster only with empty stomach but still it took 1 hours to start working.
Some of the grave dangers Viagra poised were its use on patients with history with heart problem or diabetes and in some places if failed to work patients with diabetes but Levitra had the answer to this it was very effective on patients with diabetic issues.
Viagra has a very huge plus point first it’s a pioneer in this business so it is well know in comparison with all the other impotency drugs for erectile dysfunction and it effectiveness has been proven on number of patients where other failed, and many doctors are also well aware of its usage as they have quite an experience prescribing it therefore to avoid experimenting and being used to this they hardly go for other brand.