Viagra (sildenafil citrate) is by far the most widely used treatment for erectile dysfunction. In the United States, more than 5 million men have used it to improve their sexual function.
Most erection due to sexual stimulation never approach four to six hours. Priapism is not associated with sexual excitement, at least not initially, and the erection does not subside after ejaculation.
Renal cell carcinoma on early detection has a high cure rate after a nephrectomy, however in our country most of the tumours present late and then the tumour cure rate is low as it is highly radio and chemo-resistant.