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Scientists have developed a new drug to increase blood flow to cardiac muscle and lower blood pressure. However, it did not meet expectations. But it was noted that this drug provides significant blood flow to male genitals, and as a result, improves erection quality. This drug was named Viagra.

It works only when a man feels the natural sexual excitement, and when sexual intercourse is completed, penis naturally returns to the relaxed state. In other words, sildenafil only affects natural mechanisms of erection and this was its undeniable novelty and secret huge popularity.

According to researches, Viagra can help patients with:

  • psychogenic erectile dysfunction;
  • diabetes;
  • atherosclerosis;
  • damage to nerves going to penis vessels;
  • with spinal cord injury and other related clinical conditions;
  • people taking at one same time and the same a number of medicines, etc.

Unfortunately, all forms of this drug for erectile dysfunction are unable to cure it completely because it is necessary to define the exact reason of erectile dysfunction appearance. In any case, before taking any medication, you should consult your doctor.

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When Do You need to be Careful?

A lot of people heard everything about Viagra. But few people know about its side effects and uncontrolled intake severe consequences.

Caution in use of Viagra is needed for people who are going to operate various sorts of mechanisms after its intake. Sometimes after drug intake humans may feel rapid undergoing changes of color sensations with a predominance of blue colors. In this regard, the leadership of one of the US carriers banned its pilots to take Viagra of generic origin for an hour before the flight.

Especially it is necessary to be carefully taken with severe diseases of the cardiovascular system (heart failure, angina pectoris, cerebrovascular accident). They require constant medical supervision.

Sexual intercourse is a serious exercise for people with cardiac problems. This should be remembered, if there are symptoms such as pain in the heart when physically loading and/or at rest, impaired memory and mental performance, progressing over the last few months. People who have suffered from A heart attack or blood stroke should take these symptoms seriously. This means that it is obligatory to consult your doctor about the advisability of taking Viagra of Canadian Pharmacy.

There are some men who should not take Viagra since it involved in biochemical processes substances associated with nitrogen monoxide exchange, it can interact with other drugs called nitrates, which are used at heart diseases treatment. Therefore, any man who takes nitrates in any form should not take Canadian Viagra under any circumstances.

Some patients should take Viagra with caution, and those patients who have previously suffered from priapism. Although, there are not registered cases of priapism caused by sildenafil. People having a predisposition to this disorder should consult the doctor before this medication intake.

As for the impact on the healthy men, who heard about miraculous drug and want to satisfy your curiosity, then, according to experts of pharmaceutical company «Pfizer», Viagra does not have any effect on them! That is, when using such pills you feel some kind of revolutionary breakthrough in your sexuality, then, apparently, it is better to go for the consultation to andrologist.

The most common side effects are:

  • headache (15.8%);
  • sudden face and neck reddening (10.5%);
  • anosmia (5.5%);
  • redness of nasal cavity (4.2%).

These side effects are usually transient in nature, mild to moderate severity, and not dictated by the need for treatment discontinuation.

From everything mentioned above, it can be concluded that current to date knowledge of this preparation allows you to assign it to patients for both episodic and long-term erectile dysfunction treatment, of course, considering all precautions.