VIAGRA (SILDENAFIL)

Viagra Information

Viagra (also known as Sildenafil) is widely known as the all-around impotence cure and has become synonymous with sexual pleasure. A wonder drug for those who suffer from erectile dysfunctions, it acts by relaxing the muscles of the genitalia increasing the blood flow to the penis, with the very satisfactory result of a normal erection. Studies have shown it to be a great solution to the problems of men having erection problems, almost 100% of the subjects being able to obtain and maintain an erection, long enough for a normal sexual encounter to occur.

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Viagra tablets contain the active ingredient sildenafil, which is a medicine used in the treatment of erectile dysfunction (impotence). Sildenafil is called a phosphodiesterase type 5 inhibitor, and works by preventing the action of a chemical in the body called phosphodiesterase type 5. An erection is produced via a complex chain of events, involving signals from the nervous system and the release of chemical messengers within the tissues of the penis. One of these chemical messengers is called cyclic GMP. Cyclic GMP causes the blood vessels in the penis to widen by relaxing a thin layer of muscle found in the blood vessel walls. This allows more blood to enter the penis, which ultimately results in the penis becoming rigid and erect.Cyclic GMP is normally broken down by another chemical in the body called phosphodiesterase type 5. Sildenafil works by preventing the action of phosphodiesterase type 5, thus stopping the breakdown of cyclic GMP. This means that the blood vessels are kept dilated for longer, improving blood flow to the penis and maintaining an erection.

As sildenafil enhances the actions of the chemical messengers responsible for producing an erection, it will only work once these messengers are present. This means that sexual stimulation is required for it to produce and maintain an erection. The dose should be taken approximately one hour before intended intercourse.

Viagra is a drug famous for its strong effect in the treatment of erectile dysfunction in men. It acts by reducing the functionality of a certain enzyme (phosphodiesterases) and regularizing the erection procedure – for this effect to occur, it is recommended that sexual play with the penis should also be employed. Although there are other medicines in the same drug category as Viagra, this drug results in much firmer erections and its results occur within 10-15 minutes from the intake.

Dosage

Doses range from 25 milligrams to 100 milligrams, depending on the drug's effect. The usual dose is 50 milligrams. If you are over 65, have liver or kidney problems, or are taking erythromycin, ketoconazole, itraconazole, ritonavir, or saquinavir a dose of 25 milligrams may be sufficient. Your doctor will adjust the dosage if the drug is not working properly for you.

Take Viagra only before sexual activity. The manufacturer recommends a maximum of 1 dose per day (1 dose every 2 days for those taking ritonavir).

To avoid low blood pressure, do not take the 50-milligram or 100-milligram dose of Viagra within 4 hours of taking an alpha-blocking drug such as Cardura.

No overdose of Viagra has been reported. However, any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.

Side effects

Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.

Headache

Flushing

Dizziness

Visual disturbances, such as blurred vision, blue tinge to vision

Nasal congestion

Awareness of your heart beat (palpitations)

Indigestion

Eye pain

Red eyes

Abnormal heart beats (arrhythmias)

Low blood pressure (hypotension)

High blood pressure (hypertension)

Fainting

Nosebleeds

Rash

Persistent painful erection of the penis (priapism)

Chest pain (angina pectoris)

Bleeding into the tissue of the brain (cerebrovascular haemorrhage)

Sudden loss of brain function with full recovery within 24 hours (transient ischaemic attack)