Viagra – Uses,Dosage And Side Effects

Overview – Viagra

Erectile dysfunction(ED) refers to the inability to achieve or sustain a penile erection-and it is a very common condition nowadays. It is estimated that that approximately 140 million men in the world are affected by this condition. Viagra( or sildenafil )is an oral medication that is used to treat ED (commonly referred to as impotence).The drug enhances the flow of blood to the penis this allows a man to achieve an erection after sexual stimulation. Viagra is among a group of medications called PDE-5 inhibitors(phosphodiesterase inhibitors) which also includes drugs such as Cialis(tadalafil) and Levitra (vardenafil).

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The drug can also be used in the treatment of pulmonary hypertension since it reduces blood pressure in the lungs through widening of the blood vessels in the lungs. Clinical research indicates that sildenafil can also help in the treatment and prevention of pulmonary edema, a disease that affects mountain climbers.

Dosage

The normal recommended dosage is 50 milligrams, taken when it is necessary. This should be from 30 minutes to one hour before sexual activity. But it can also be taken even 4 hours before sex. Depending on its effectiveness and any side effects, the dosage may be reduced to 25 milligrams or increased to 100 milligrams. Users are advised not to take more than 100 milligrams, and also not to take more than a single dose in one day. The drug can be taken with or without food, but a meal with a high fat content may prolong the time before it starts working. Taking grapefruit products and alcohol together with the drug may result in unwanted side effects and should be avoided.

Side effects

The most common side effects of taking Viagra include headache, poor vision, digestion difficulties and dizziness. These effects will usually go away after the medication leaves the body of the user.

There may be other more severe side effects which require immediate doctor attention. These include chest and muscle pains, shortness of breath, constant tiredness and sleepiness, dryness in the mouth, increased or irregular heartbeat, swelling in the feet, ankles or hands, hearing problems, vomiting and reduced nerve sensitivity. Users who experience a painful erection or an erection lasting for over four hours (called priapism) should also seek urgent medical attention as they may suffer permanent tissue damage and impotence.

Contraindications

There are people who should not use the medication or should confirm with their doctors before using it. This includes people using nitrates and those with various health conditions like cardiovascular complications, blood cell disorders such as leukemia, hepatic impairment problems, kidney disease or low blood pressure (also called hypotension). Other people who should not use the medication are those who have suffered a heart attack or stroke recently and persons who have genetic degenerative retinal problems. People taking other impotence drugs should also consult their doctors before taking Viagra.

John Rogers

I have been working in General Practice since 2006.