Manufactured by Pfizer, Viagra was the first drug for the treatment of erectile dysfunction. Most men buy Viagra as it is very popular and has been around since 1998. Viagra was one of a kind when it came to the market. Viagra not only treats erectile dysfunction but also varying degrees of erection problems. However there are many more medicines now available online which help considerably to treat erectile dysfunction. Viagra is still the most widely used medication for impotence despite the launch of Uprima, Cialis and Levitra.

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How does Viagra get to work?
Erectile Dysfunction is often a physical problem. Viagra treats erectile dysfunction by increasing the blood flow to the penis. With Viagra you must be sexually excited to get an erection. If you take Viagra when you are not aroused nothing will happen. You will not get an erection just by taking Viagra.

When a man is sexually excited following sequences would take place:
- The arteries in the penis relax and widen (this allows more blood to flow into the penis).
- The increased blood flow causes the penis to become hard and erect.
- The veins that normally carry blood away from the penis get compressed (this restricts the blood flow out of the penis).
- More blood begins flowing in and less flows out, making the penis larger; this causes an erection.

For most men the nerves or blood flow plays its part to work this process properly. For others this might not be the case.

Viagra Dosage
There are three potential dosages of Viagra: 25mg, 50mg and 100mg. The dosage may have to be adjusted by your physician should the desired effect not be achieved.

As with all medication you should follow the advice of your physician and consult him if you have any questions or concerns, it is normal to start at the lowest dose to check for effectiveness. Viagra should be taken once a day, with or without meals, as required. Do not reduce or increase the prescribed dosage.

Can I drink alcohol alongside Viagra?
It is not advisable to drink high amounts of alcohol before taking Viagra, and the chances are Viagra will not work if you do this.

Do certain foods effect the use of Viagra?
Eating fatty foods can cause a delay in the effects of Viagra on erectile dysfunction.

Are there any side effects with Viagra?
Side effects such as headaches, facial flushing and an upset stomach can occur, though these are most likely with higher doses of Viagra. Usually mild, these side effects do not last longer than a few hours.

There is also the possibility of bluish or blurred vision or sensitivity to light. Should an erection last longer than four hours get medical assistance.