Researches to Improve Viagra
As they say nothing in this world is perfect and that is in both contexts; positive and negative. As every thing that is 
developed, discovered or natural it goes through a process of evolution and if anything that is good can not always remain good and what is bad does not means that it always has to remain bad. Viagra too has the similar story; as researches have been constantly carried out to improve the performance of the drug and minimize the impact of the side effects caused by Viagra. They also carry out studies on whether Viagra can be useful in treating other diseases or not.
Viagra has been recently reported to help in treating breast cancer, leukemia and sarcomas. As Viagra stabilizes the mitochondria and protects against free-radical damage of the mitochondria, which could other wise result in some serious situation. It has been also reported that it can be handy in removing clots; as Stents, which are installed in the arteries to maintain blood flow through them, the foreign materials of the devices, are recognized by the body and platelets often clot to them. If too many clot, this can block blood flow, potentially inducing a stroke or heart attack.