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The principle of the action of Viagra

For today, Viagra is considered the most popular among men a means for returning potency and eliminating erectile dysfunction. Although the instructions accompanying the drug and there are instructions on how to take tablets safely, it is not clear to everyone how Viagra works.

To begin with, it should be clarified that Viagra is a drug that has a therapeutic effect on erectile dysfunction. What can not be said about other drugs widely advertised today, as they eliminate erectile dysfunction for a while, their effect is symptomatic. To understand  buy generic viagra the effect of the drug, you need a minimal understanding of the process of erection.

How does an erection occur?

The beginning of the erectile process is the state of sexual arousal. Thanks to him, the blood vessels in the small pelvis expand and provide a rush of increased blood to the penis area, it increases in size and hardens. So there is an erection. When the sexual act ends with the ejection of sperm, the sexual tension subsides, accompanied by a decrease in blood flow in the penis, and the erection passes.

Under the influence of adverse factors: chronic pathological conditions or prolonged therapy with antihypertensive drugs, there is a violation of blood flow in all organs (the penis is not an exception). This is the reason for the lack of proper blood flow to the penis at the time of sexual arousal. As a result, an erection is insufficient or completely absent. If such situations have been observed in men repeatedly and for a long time, then this condition experts call erectile dysfunction.

What is the effect of the drug

Today, there are many drugs that work to increase potency, but none works like Viagra. The fact is that the latter directs its action to eliminate the immediate cause of impotence, that is, to combat the inability of a man to have a normal erection sufficient to accomplish a sexual act.

Caution! The preparation of Viagra, according to the instructions, can be taken only once a day.

Viagra corrects the disturbances that have arisen in the field of blood supply, restoring the activity of the vessels participating in the erectile process. Practice shows that the tool has helped many men with viagraerectile dysfunction to achieve a normal erection lasting a long time. The only condition for the effectiveness of the drug is the presence of sexual arousal.

Many men confirm that the remedy really helps to achieve an erection necessary for a full sexual intercourse. Viagra has a selective effect, which is directed to the expansion of the blood vessels of the penis. In addition to increasing potency, the remedy improves sexual contact, i.e., makes it longer, shortens the intervals between restorations, and increases the quality of orgasm, making it brighter and more emotionally saturated.

The effect of the drug comes in half an hour-hour, although in the course of the studies individual cases were revealed, when the effect of the remedy started within a quarter of an hour, depends on the individuality of the man (complexion, sensitivity to the drug, full stomach, etc.). The effect of increased erection lasts about 4 hours, although it depends on the organic buy viagra characteristics of the man. The initial dose of the drug should be half a tablet (50 mg), before the alleged sexual contact, Viagra takes about an hour.

Attention! The drug begins to act only if there is a corresponding sexual arousal. If there is none, then an erection may not occur even after Viagra.

Active substances

You can not prescribe yourself Viagra yourself, because it is dangerous. Just acting substance of the drug is sildenafil. This component has the ability to instantly react with many drugs. Leading among them are medications used in the therapy of cardiovascular pathologies and containing nitrates. If you take them with Viagra, then there may be various kinds of complications.

But in general the drug has a very positive effect on the male body, which was proved in the course of clinical studies. Most of the men participating in the test (≈80%) received a persistent and prolonged erection as a result of taking Viagra, and after the act they experienced a profound satisfaction. Approximately 15% of the subjects reported lack of effectiveness in taking the drug, and the remaining minority (5%) felt that exposure to Viagra could be hazardous to health.

Possible side effects

During the research, some negative reactions to the use of Viagra were revealed. Although cases of their occurrence were observed in a very small number of subjects (2%). There were no side effects in men who observed a strict dosage when taking the drug. If a generic Viagra man has weakened immune buy generic viagradefense, there is a chronic disease or an overdose of the drug occurs, the following reactions may appear:

In the cardiovascular system: tachycardia, ischemia or arrhythmia, heart attack or stroke, pressure decrease;
General disorders: light hypersensitivity, general malaise and weakness, migraines, soreness in the chest and stomach, dizziness, puffiness on the face and allergic manifestations (dermatitis, herpes, rash), blood sugar is observed, anemia can develop;
In digestion: dry mouth and eructation, vomiting, possible exacerbations of chronic colitis, gastroenteritis or gastritis;
In the locomotor apparatus: soreness in the tendons and bones, arthritis and arthrosis;
Nervous system: increased nervous excitability and sleep disorder;
In the respiratory system: bronchitis, laryngitis, exacerbation of asthma, pharyngitis, cough;
Genitourinary system: incontinence,inflammation of the bladder , frequent urination, ejaculation disorder and lack of orgasm.

Contraindications

As any drug Viagra has its contraindications. Experts do not recommend taking the drug with individual hypersensitivity to sildenafil, in the presence of anatomical deformations of the penis. You can not use Viagra with venous fibrosis, blood oncology, in the presence of ulcers in the organs of the digestive tract, with heart failure and angina pectoris, post-stroke or postinfarction periods, at a leaping pressure.

I would like to remind you that everything is fine – in moderation, therefore, it is strongly recommended that men comply with the prescribed London viagra dosage, otherwise you can achieve not an intimate pleasure, but intoxication and other consequences.