The popular erectile dysfunction (ED) drug Viagra not only helps boost a man's performance in the bedroom but also can spike the growth of skin cancer according to a recent study. Researchers at the University of Tubingen in Germany discovered that men who rely on the medication are at a greater risk of melanoma which is the deadliest form of skin cancer. Here are some herbal alternatives for Viagra. The researchers noted that Sildenafil which is marketed as Viagra and has been on the market since the late 1990s has a stimulating effect on the messenger molecule cyclic guanosine monophosphate
