One of the biggest news in the 90s is the advent of Viagra. Viagra can solve the impotence that a lot of men, many more than we guess, have. About 30% of men are dissatisfied with their sexual life. As everything has its own dark-side, nowadays, it is reported that Viagra has many various side-effects. So I would like to tell you what Viagra's effects are, how it works, what the negative side-effects are, and what people think about it.
        Viagra improves a man's response to sexual stimulation. So, the advent of Viagra was great news to men who couldn't get an erection. Many people are interested in it, even in Korea where its importation has been prevented until lately. It gives them hope that they can enjoy their sexual life whenever they want.
        Now, I will explain how it works. Most of all, to know the action, we should be aware of how an erection happens. An erection depends on increasing blood flow to the penis. When a man is sexually aroused, the arteries in the penis relax and widen, allowing more blood into the penis. If the nerves or blood vessels associated with these processes are not working properly, a man may not be able to get an erection. Viagra increases blood flow when he is sexually aroused, so he can get an erection. In this way, Viagra helps people who are impotent.
        However, Viagra has very bad side-effects. Pfizer Inc., which invented Viagra, informed consumers about the side-effects and warned them, "Anyone who has chest pain or who takes nitrates should not take this." The cases in which some men died after taking Viagra have been reported from all over the world, especially Asia. The side-effects which Pfizer Inc. described are some headaches, flushing, upset stomach, temporary visual effects and so on. Pfizer also advises that if you have dizziness or nausea during sex, you should tell your doctor immediately.
        The public misunderstand that Viagra is a panacea for impotence. They have the illusion that whenever they take it, they can become macho men and feel extreme orgasm. But only 70% of people experience the positive effects. Furthermore, there are many chances to misuse Viagra because of the conservatism about sexual things. Generally speaking, people do not want to consult a doctor about their sexual disability but solve it by themselves. In case that they use Viagra to solve their impotence, they are inclined to buy it secretly without prescription. It's very dangerous. I think we should be assured that to take it arbitrarily is the fastest way to death.
        As our society has been westernized and industrialized, we are much more interested in sexual life than our ancestors were. However, some people say that sexual cultures have become too important. I think that sexual life is very important, so we should try to find better ways than to take Viagra. Though it is very helpful physically or psychologically, it has many weak points. To succeed in sex, the most important thing is love from deep in our hearts. We should also choose regular exercise to have good health instead of taking pills. I suggest that Viagra should be the last method to get satisfaction in sexual life.