Sometimes, Viagra doesn’t cause the effects that are expected to occur in men. This is uncommon, but probable. There are many reasons for this, and it is important to discuss all the options before buying this treatment. Some patients don’t believe that it can work for them, and this makes it harder to prescribe the treatment. Viagra works when the man is sexually excited. Because the drug works to restore the chemical disbalance in the brain, it should be taken half an hour to an hour before having sex, and will look no different to an erection that has proceeded without the aid of Viagra. Since Viagra was introduced in 1993 it has an 80 percent success rate with the maximum dosage. For the people who are unsuccessful with the medicine, it is necessary to know that Viagra does not plainly produce an erection. There has to be a definite level of sexual incitement before the chemical process can start. Besides, both lovers must have an equal desire for making sex. Many people think they need Viagra to achieve an erection without needing to be fully sexually aroused. Sexual closeness alone will not help Viagra to function, as the mind has to desire the sex before the blood flow to the phallus can be increased. If the partner isn’t willing to have sexual activity, then it is unlikely that the patient will be stimulated enough for Viagra to work. Talking over the problem with your lover, and finding all the information together can make both lovers closer, help them understand and finally increase awareness and sexual desire for one another. Taking Viagra 30 minutes before sex, and engaging in acts that raise desire can have the better results from the medicine. Thus, the more excited both lovers are, the more likely Viagra is to function right to achieve and keep an erection without the desire decreasing. Psychological causes can also prevent Viagra from working adequately. It is a usual problem for men suffering from erectile dysfunction to also suffer from depression or anxiety. It is the discomfort suffered by the patient that won’t allow sexual satisfaction. If the man is embarrassed due to the stigma often attached to males who suffer from erectile dysfunction, then this could have hostile effects even with Viagra. Other reasons such as interference, or disbelief in the treatment could mean that an erection is improbable, and these reasons should be treated before the general practitioner prescribes Viagra. Viagra is prescribed to aid males of all ages and many levels of erectile dysfunction achieve and keep an erection for several hours. It is one of the most popular erectile dysfunction drug on the market that has a high success rate. It doesn’t have to be an issue, and with the full knowledge, sexual satisfaction is within your grasp.