Sometimes, Viagra doesn't have the results that are supposed to occur in men. This is unusual, but possible. There are many reasons for this, and it is vital to know all the options before buying this medicine. Some people don't trust that it can work for them, and this makes it harder to prescribe the medication. Viagra works when the patient is sexually aroused. Because the treatment works to rehabilitate the chemical imbalance in the brain, it should be taken half an hour to an hour before having sex, and will look no uncommon to an erection that has occurred without the aid of Viagra. Since the introduction of Viagra in 1993 it has an 80 percent success rate with the maximum dose. For the people who didn't succeed with the treatment, it is important to note that Viagra does not simply cause an erection. There needs to be a definite level of sexual stimulus before the chemical progress can begin. Besides, both partners must have an equal desire for making sex. Many men think that they need Viagra to achieve an erection without being fully sexually aroused. Sexual intimacy alone will not help Viagra to function, as the mind has to desire the act before the blood flow to the phallus can be increased. If the partner doesn't want to have sexual activity, then it is improbable that the patient will be stimulated enough for Viagra to work. Talking over the issue with your lover, and finding all the information together can bring both lovers closer, help them understand and finally increment awareness and sexual desire for one another. Taking Viagra half an hour before sexual activity, and taking part in acts that excite desire can produce the better outcome from the medication. Thus, the more active both partners are, the more likely Viagra is to function correctly to reach and sustain an erection without the desire fading. Psychological causes may also prevent Viagra from working sufficiently. It is a usual issue for men suffering from erectile dysfunction to as well suffer from depression or disquietness. It is the discomfort suffered by the patient that won't allow sexual satisfaction. If the patient is embarrassed due to the harrassment often attached to males who suffer from erectile dysfunction, then this could have adverse effects even with Viagra. Other causes such as interruptions, or disbelief in the treatment could mean that an erection is not possible, and these factors should be treated before the practitioner prescribes Viagra. Viagra is prescribed to help men of all ages and many levels of erectile dysfunction get and sustain an erection for some hours. It is one of the most popular erectile dysfunction medicine in the world that has a high success rate. It doesn't need to be a discomfort, and with the corresponding knowledge, sexual fulfillment is within your grasp.