Viagra is an erectile deficiency drug that helps you in getting the right erection. Though you may come across hundreds of Erectile Deficiency drugs in the market, no drug has the power of viagra and this is why doctors prescribe more of viagra drug.

Drug Uses

How does viagra act? Viagra drug acts on the vessels that carry blood to the penis. Once the drug starts to act, the vessels get widened, paving the way for more blood. Once the flow of blood is increased, the penis gets better hardness. It has been said that the more blood in the penile area, the better the erection.

How Viagra is Taken

Coming in tablet form, viagra can be used an hour ahead of sexual activity. But when using viagra, you should only go as per the direction of the doctor or it is risky. Once the drug is used, the effect is known to last for more than 40 hours. One important thing that has to be noted while using viagra is that you have to take a second dose of the drug only after 24 hours of your first tablet.

More Viagra Information

The doctor can only decide if viagra suits your body. So when talking to the doctor about your erectile problems, do not hesitate to tell him about all your present and past medical conditions. The doctor will only be able to deliver the proper prescription only if he has a thorough knowledge about your medical conditions. Do not hesitate to tell the doctor if you have any allergies concerning any substance, medicine and food. If you have angina, retinitis pigmentosa, prolonged erection, painful erection, heart related diseases, liver problems, blood related problems and liver issues, the doctor may probably change the doses or may even not advise viagra.

Some Warnings

When consulting the doctor, you should also discuss about all the medicines that you are using. Tell the doctor if you are using any prescriptive or non-prescriptive drugs, herbal medicines and other supplements. Viagra is not at all prescribed if you are using any medicine containing nitrates. This is so because mixing the two leads to a lowering of the pressure, which could be fatal.

After using viagra, some people have experienced vision loss. But there is no proof to link viagra and vision loss. Persons who had diabetic, hypertension and with earlier sight problems had vision loss after using viagra.

One should also give up alcohol when using viagra as it is risky. In case you feel any dizziness or uneasiness while engaging in sex after using viagra, it is better you contact the doctor at the earliest.

Side Effects

Dizziness, stomach upset, temporary colour vision, headache, flushing and stomach upset are some of the Viagra side effects. But it has to be seen that these side effects do not last longer and so there is nothing to be worried of it.

In some persons, it has been seen that some people have long erections after using viagra. This is not good for the penis. So in case you are having such a condition, do not delay in contacting the doctor.