Erectile dysfunction in men has become a very common problem during the last several decades and there can be different reasons of this ailment. Some cases are connected with wrong life style and health state, some happen because of psychological traumas and some because of physiological factors. Whatever the reason is, there is one the most popular medicine for fighting with this ailment and gaining back a full-blown sexual life. Although you can easily buy Viagra online, it is still recommended to take Viagra with prescription. There are some cases when Viagra may cause health problems, that is why it is better to consult your doctor first and discuss your health state and the dosage that will be right exactly for your case. For example, if you have problems with the blood pressure and take some medications to treat it, or you are older then 65 years old, or you have kidney, liver problems or suffer from heart diseases, depression, diabetes, spinal cold injury or anything else, you should speak about this with your health care provider, as in such cases you either will be recommended the lowest dosage, or will be not allowed to take Viagra at all. If you are in a perfect health state, then, of course, the easiest and the most comfortable way to buy Viagra online.