Archive for April 2011
VIAGRA DRUG CLASS AND MECHANISM
More than 250 million people suffer from potency problems. This sexual dysfunction has more psychological than physical character due to the fact that only half of the impotence problems occur for physical conditions. Sexual dysfunction is the inability to produce and maintain an erection to complete intercourse. Diabetes, circulatory and neurological problems, bad health conditions and dreadful habits such as smoking and excessive amounts of alcohol are some factors responsible for impotence. If the inflow of blood to penis is increased but the removal of blood from penis is lessened then this problem may occur.
Nitric oxide is produced released in penis when the sexual stimulation occurs. Nitric oxide activates enzyme that leads to the production of eGMP. The eGMP is responsible for erection. If there are some difficulties in this process then sexual dysfunction occurs.
Sildenafil citrate is prescribed to treat this problem. It reduces the pressure of blood by inhibiting phosphodiesteras-5. Phosphodiesteras-5 destroys eGMP and the result is good erections by increased blood flow into certain areas of the penis.
Sildenafil citrate is absorbed rapidly (45 minutes to 90 minutes). the absorption process may be slower if this medicine is taken with a fat food. At that situation it can take some more hours to be absorbed. Sildenafil citrate is excreted by the liver and kidneys.
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What does my medication look like?
Sildenafil citrate is available with a prescription under the brand names Viagra and Revatio.
- Revatio 20 mg – white, film-coated round tablets
- Viagra 25 mg – blue, film-coated tablets with a rounded-diamond shape
- Viagra 50 mg – blue, film-coated tablets with a rounded-diamond shape
- Viagra 100 mg – blue, film-coated tablets with a rounded-diamond shape
Viagra pills are blue and diamond-shaped with the word “Pfizer” engraved on one side, and VGR (“25″, “50″ or “100″), the dose of that pill in milligrams) engraved on the other.
The dose of sildenafil citrate for erectile dysfunction is 25 mg to limited dose of 100 mg. taken not more than once per day between 30 minutes and 4 hours before sexual activity.
Revatio pills are white, round, film-coated tablets imprinted with “RVT 20″ on one side. The dosage for pulmonary arterial hypertension treatment is 20 mg three times a day.
How should I take Viagra?
Before taking Viagra, consult your doctor and inform him about all your diseases to avoid health risks and potential side effects. Your doctor will recommend you the exact dose, which you should take as your doctor prescribed. Do not take in larger or smaller doses or for longer than recommended (should be taken not more than once in 24 hours). Follow the directions of your doctor or prescription label directions.
Viagra helps you maintain an erection when there is sexual stimulation. You will not have an erection just by taking a pill, the stimulation is necessary. Your doctor will give you all the instructions.
Viagra should be taken only when needed, 30 minutes before sexual intercourse. Usually the recommended dose is 50 mg. The drug may be taken up to 4 hours before sexual activity. It is very important to take Viagra not more than once per day. Try to avoid high fat meal when taking the drug; such food can delay the time of the effect of this drug. Try not to eat grapefruit or drink grapefruit juice while you are being treated with Viagra.
If some side effects occur while having sexual activity, you should stop and call your doctor. These serious side effects can be dizziness or nausea, chest pain, numbness, in the arms, neck, or jaw, visual loss and some others. If you have used too much of this drug and overdose occurred seek emergency medical attention immediately.
Main Things To Know About Viagra
Viagra (the main component -sildenafil citrate) is the most recognized brand of drug for treatment of male erectile dysfunction. Erectile dysfunction happens to about one in ten men. Nowadays, erectile dysfunction can be safely and effectively treated. There are a number of treatments that can help and one of them is taking Viagra.
Viagra works by allowing increased blood flow into certain areas of the penis, which leads to an erection. Sildenafil Citrate is applied for the treatment of erectile dysfunction (impotence) in men and pulmonary arterial hypertension.
Viagra is manufactured in pills for oral usage and is available in doses – 25 mg, 50 mg and 100 mg. Taking Viagra drug is recommended only when needed, but not more often than every 24 hours.
Before you start taking Viagra, consult your doctor and tell him if you are allergic to it; or if you have some health conditions that should be taken into consideration when using the drug.
People with some health conditions, age or other factors are usually recommended to take Viagra even less often than every 24 hours to make sure the treatment does not cause harm to their health. What should be seriously considered is age; aged people may be more sensitive to the side effects of the drug.
It is vital to inform your doctor about any of the health conditions you have ever been diagnosed with. This makes possible prescribing the exact dosage you need to help you perform sexually and what is more important not to have serious side effects.