The brand Viagra is a medicine usually taken in tablet form by men to help with the problems of impotence otherwise known as erectile dysfunction.The active substance found in these tablets is Sildenafil but is almost always known as Viagra the brand name.
The aim of taking this medicine is to achieve and keep an erection that will last for sexual intercourse or activity.
The way it works is by increasing the blood flow to the penis but will need physical stimulation as well.
Side effects
There are many serious side effects that if experienced the medicine must be stopped and medical advice should be taken.
Some of the more serious side effects can include an erection that stays and will not fade away naturally.Also a sudden loss of vision can be experienced which is extremely frightening.Also sudden loss of hearing.
Before taking Viagra the person must consider if they have other conditions that may be made worse by taking the brand Viagra.These can include high blood pressure or low blood pressure,strokes,ulcers and liver or kidney problems.
There can be problems of Viagra having an effect on other medicines that may be being taken such as nitrates and alpha blockers.It can even interfere with antibiotics and fungal medicines.
The brand Viagra will not give an automatic erection,physical stimulation will be needed and it should be taken about an hour before intercourse is expected.Viagra can be taken with or without food but if the meal is vey fatty it can affect the speed at which the viagra will work.
The erection should pass after sex and medical attention should be seen if this does not happen.The brand Viagra should not be used more than once a day and the doctor will advise on how often it can be used.
In some men the effect will not be dramatic i the first or second attempt and advice on relaxation and not having a fatty meal will be advised.
This is often prescribed in 100 mg dosages and is a blue diamond shaped tablet.The medical doctor will ask questions on erections usually before prescribing it.
Some of the questions that are asked by the patients are whether Viagra is suitable for them or not.All the information will be looked at by the medical doctor as to whether the man needs this treatment.All the side effects will be discussed and whether there will be contradictions with other medicines the patient may be taking.
Some men may need to take viagra three or four times before they see the effects but it does usually work on four out of five men.
One of the problems is getting an hard enough erection and sustaining it long enough to last in intercourse.

I am self employed. General Practitioner in Melbourne, VIC. My special interest: male reproductive system.