Infoviagra

The first step to treat erectile dysfunction or male impotence is to admitt the problem. Then, the individual must realize that this is a very common dysfunction among adult population and that there is nothing to be ashamed of.

The most important thing a patient must ask to our doctor is, simply, if Viagra is rigt for him or her. In this way, the patient will help the doctor to do a good diagnosis. To do this, he/she has to do a routine checkup, assessing the general health of the patient (it is indispensable to test the blood pressure). After that and before Viagra is prescribed, it is highly recommended to make some questions to the doctor:

• Every so often, I have a problem getting an erection. What does this mean?
• I want to try VIAGRA, but is it safe for me?
• I heard that with age, sex slows down. Is this true?
• Could a medication I’m taking affect my sexual performance?

Only then the doctor will be sure to prescribe the patient Viagra and the patient will be confident enough to take it.

Viagra pills are blue and diamond-shaped with the words “Pfizer” engraved on one side, and “VGR xx” (where xx stands for “25″, “50″ or “100″, the dose of that pill in milligrams) engraved on the other. The dose of sildenafil for erectile dysfunction is 25 mg to 100 mg taken not more than once per day between 30 minutes and 4 hours prior to sexual intercourse. It is usually recommended to start with a dosage of 50 mg (or even 25 mg) and then lower or raise the dosage as appropriate.

The dosage for pulmonary arterial hypertension (Revatio) is one 20 mg tablet three times a day. Revatio pills are white, round, film-coated tablets imprinted with “RVT 20″ on one side and “Pfizer” on the other.

Source: wikipedia.org

One of the most common problem we found in Viagra is that it has an spillover effect as It blocks PDE5 and has also effect on PDE6. It turns out that PDE6 is used in the cone cells in the retina, so Viagra can temporally alter color vision. Many people who take Viagra notice a change in the way they perceive green and blue colors, for instance.

Viagra can also have side effects on people havind drugs like nitroglycerin. As Viagra, Nitroglycerin works by increasing nitric oxide, opening up the arteries that supply the heart with oxygen. Taking nitroglycerin and Viagra together, plus the blocking of PDE5, can lead to an overincrease of the nitric oxide, what could mean problems.

Other problems with Viagra can include headaches, facial flushing and upset stomach. The possibility of heart attacks is one reason why Viagra is a prescription drug. This is why before being prescribed Viagra, patients must be asessed by their doctor, who needs firstly to understand their medical history.

Sources:

http://www.howstuffworks.com/

http://www.viagra.com/

Don’t take VIAGRA if you take nitrates, often prescribed for chest pain, as this may cause a sudden, unsafe drop in blood pressure.

Discuss your general health status with your doctor to ensure that you are healthy enough to engage in sexual activity. If you experience chest pain, nausea, or any other discomforts during sex, seek immediate medical help.

As with any ED tablet, in the rare event of an erection lasting more than 4 hours, seek immediate medical help to avoid long-term injury.

If you are older than age 65, or have serious liver or kidney problems, your doctor may start you at the lowest dose (25 mg) of VIAGRA. If you are taking protease inhibitors, such as for the treatment of HIV, your doctor may recommend a 25-mg dose and may limit you to a maximum single dose of 25 mg of VIAGRA in a 48-hour period.

In rare instances, men taking PDE5 inhibitors (oral erectile dysfunction medicines, including VIAGRA) reported a sudden decrease or loss of vision. It is not possible to determine whether these events are related directly to these medicines or to other factors. If you experience sudden decrease or loss of vision, stop taking PDE5 inhibitors, including VIAGRA, and call a doctor right away.

Sudden decrease or loss of hearing has been rarely reported in people taking PDE5 inhibitors, including VIAGRA. It is not possible to determine whether these events are related directly to the PDE5 inhibitors or to other factors. If you experience sudden decrease or loss of hearing, stop taking VIAGRA and contact a doctor right away.

If you have prostate problems or high blood pressure for which you take medicines called alpha blockers, your doctor may start you on a lower dose of VIAGRA.

VIAGRA does not protect against sexually transmitted diseases, including HIV.

The most common side effects of VIAGRA are headache, facial flushing, and upset stomach. Less commonly, bluish vision, blurred vision, or sensitivity to light may briefly occur.