By David
Jay Brown
Some people
claim that Viagra has made more people happy than any other drug in human
history.
Before
Viagra, men with erectile difficulties had to endure some pretty extreme
pharmacological measures in order to obtain erections. For example, some
men with erectile dysfunction used to inject a drug called Paperverine
directly into their penis in order to obtain erections. Perhaps equally
unattractive was a method of depositing suppositories of a drug called
alprostadil directly into the urethra of the penis. Although both of these
treatments for producing erections are quite reliable (around 77%), the
pain and complications involved make them unattractive to most men with
impotency problems.
This is
why, for men with erectile difficulties, Viagra (or sildenafil citrate)
was such a huge advance. According to the
Physician's Desk Reference, 82%
of men report an improvement in their erections after simply swallowing
100 milligrams of Viagra--which explains why Viagra is one of the most
popular pharmaceutical drugs in the world. Since it first became available
from Pfizer in 1998, Viagra has been used by more than 16 million men
around the world. According to Phizer's web site, 9 tablets of Viagra are
dispensed every second worldwide.
Viagra
works by enhancing the effect of Nitric Oxide, the only known gaseous
neurotransmitter (or chemical messenger in the brain). Nitric Oxide is the
primary neurotransmitter responsible for causing erections in men.
It
works like this. Inside the human penis are paired erectile chambers
running almost the entire length of the organ called the Corpora Cavernosa.
These chambers are filled with spongy tissue, rich in tiny pool-shaped
blood vessels, which are surrounded by smooth muscles that play a key role
in initiating an erection.
Paradoxically, the muscles must relax for an erection to occur. This
allows blood to flow into the penis, and for the corpora cavernosa to
inflate. The chemical messenger that allows this to occur is Nitric Oxide,
which Viagra enhances the effect of, and thus increases blood flow to the
penis. Viagra can accomplish this in as quickly as 30 minutes, and it
generally lasts for around 4 hours. This doesn't mean that one will have
an erection for 4 hours, but rather that, with the proper stimulation and
arousal, for a 4 hour period, most men won't have any difficulty achieving
a solid erection.
Many
men with erectile difficulties say that Viagra changed their lives. Even
some men who don't really have a serious problem with impotence say that
they use Viagra as a kind of "insurance", so that they don't have to worry
about whether or not they'll be able to perform.
Viagra
is a prescription drug in the United States, and it doesn't work for
everyone, such as people with serious organic problems. Also, for people
with weak cardiovascular systems, Viagra can have dangerous side effects,
so it is important to consult with a physician about your concerns.
According to the Pfizer Web site the most common side effects of Viagra
are headache, facial flushing, and upset stomach. Also, but less commonly,
other side effects may include bluish vision, blurred vision, or
sensitivity to light.
To buy
Viagra online, click
HERE.
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