In what cases Viagra will not help?

Viagra for many men became a strong assistant to establish erectile function. But patients those have received no effect from the pills often come to doctors. Why is this happening, and in what cases Viagra will not help?

We are not talking about contraindications to the drug when the pills can be cause to call an ambulance, but about the state of health of the patient, which will not allow the drug to realize its functions.

1. Expressed atherosclerosis of vessels. In this disease the blood vessels lose ability to dilate and erection is a vasodilatation of the penis due to blood flow that provide pills. Reactions after taking Viagra will not follow.

2. Low levels of testosterone in the male body. This may be a result of a failure of the endocrine system, obesity. Pills do not affect the level of hormones. When buying Pfizer Viagra online you should consider this.

3. Diabetes and metabolic syndrome. If these diseases affected the inner sheath of the vessels, it does not produce the right quantity of substances that promote erection.

4. After buying Viagra online and taking the pill was not followed by sexual arousal. It is common cause that the drug had no effect. The medication does not provide erection on their own. It occurs after stimulation (tactile, visual...).

Therefore, before you buy Viagra online man should be examined and determine the cause of sexual dysfunction. Sometimes the cause of male weakness lies in the problems of a psychological nature.

Buy real Viagra online you can only after checking all the items in the package, attesting to the authenticity of the product. Only true product can help a man to regain potency.