Hello doctor! my name is thom. I am 40 years now and my problem is that I am suffering from weak erection since past 7 months. This problem happened to me after I have left consuming cialis. My penis has also shrunken due to too much hand practice. I have little bit higher cholesterol. According to the urologist from al ain hospital, abu dhabi, my testosterone level is normal (500 ng/dl). He said that I don't need to take testosterone booster pills but my problem is very serious. The urologist stated that this may have happened due to lack of sex but I don't think so. Now I am using one of the herbal oil named vigora m herbal oil. Will you kindly tell me what's happening to me. Is it called erectile dysfunction. I am thinking to buy pills like l arginine to cure from this weak erection. Help me out.