THE BLUE PILL 

The active principle is the sildenafil citrato, molecule, studied and mass in production from the pharmaceutical house Pfizer. It acts on the vascular structures of the penis, the cosidettis "cavernous bodies", favoring the influx of blood inside them and accordingly allowing the erection. L assumption of this product facilitates the erection, it helps the maintenance during the sexual action, it increases the tone of rigidity, it helps to get with greater facility a second erection. 
The tablet must possibly be assumed distant from the meal; later around 50 minutes, an enough concentration of the medicine reaches the cavernous bodies and in presence of excitement the erection will result facilitated; effectiveness has a duration that can have gone since 4 to the 6 hours. 
They don't occur that is cases of spontaneous erection, neither there is danger of erection prolonged with the consequent pains that they would derive of it. 
And' risky and useless to overcome the daily daily dose, even if it doesn't seem that there am habit to the medicine. 

The medicine must absolutely be avoids the patients that: 
-  you/they have had cardiac heart attack or to those people which sexual  activity is dissuaded; 

-. they are affections from a rare oculistic illness (the retinite pigmentosa) 

-  you/they are assuming nitro-derived medicines. 

For thing you/he/she is used? 
And' used for treating the impotence in the men. It increases the ability of the body of relizzare and to maintain an erection during a sexual stimulation. 
Who doesn't have to pick him/it up? 
The men that use base medicines of nitrates, for instance nitroglycerine, in how much the association could decrease too much the blood pressure. You/he/she must not be used by women and children. Then precautions from these people before purchasing. 
General precautions 
A complete medical history and an examination you/he/she should be had for determining his/her own impotence before using him/it. The men that have medical conditions that can cause a sustained erection (leukemia, multiple mieloma, etc.) they don't have to use him/it. There are many medicines that can interact with V., therefore it needs to talk to his/her own physician of it. You/he/she has not been studied for the use together to others prepared against the impotence, therefore the association is dissuaded. 
How does he take? 
His/her own physician can prescribe a tablet a day, around a now first dell sexual activity. However you/he/she can have been being taken for 30 minutes to 4 hours before dell sexual activity. 
Which are the possible collateral effects? 
Following a list I don't complete, to discuss with his/her own physician for an accurate list. And' generalemente is well born. If some collateral effect is had, this can be mild and temporary. Here are some possible communes collateral effects: headache, shaken stomach, infections of the urinary line, sensibility increased to the colors green and red, diarrhea, etc.

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