Viagra has revolutionized the way physicians treat men suffering from erectile dysfunction and impotence. For the first time, a potent oral medication is available that is able to markedly improve sexual activity in over 80% of men with erectile dysfunction.
Prescribed by U.S. doctors and dispensed by U.S. pharmacists.
Viagra (sildenafil) tablets are provided in dosages
of 25, 50 and 100 milligrams. The pills are blue, rounded-diamond- shaped, film
coated tablets. Make sure you except no substitute. While some web sites say they
are dispensing Viagra, in truth they are dispensing a cheap substitute.
Only pills with the above configuration are the genuine product.
HOW DOES VIAGRA WORK?
Viagra is the brand name for sildenafil. When sexual stimulation begins
nitric oxide (NO) is released into the spongy tissue of the penis. NO then activates
an enzyme that increases the production of cyclic guanosine monophosphate (cGMP)
the substance that relaxes the spongy tissue of the penis and facilitates an influx
of blood. As specific enzymes slowly degrade cGMP the penis will slowly loose
its ability to sustain an erection. Viagra works by inhibiting those enzymes
that degrade cGMP, thereby enhancing ones ability to obtain and sustain an erection.
HOW EFFECTIVE IS VIAGRA?
Over 21 studies have been done to evaluate the efficacy of Viagra. Evaluation
of drug activity was most often done using a self-assessment questionnaire. During
a 6-month open labeled study, Viagra was found to improve sexual function
in 88% of those treated. This included frequency, firmness, and maintenance of
an erection; frequency of orgasm; frequency and level of desire; frequency, satisfaction
and enjoyment of sexual intercourse; and overall relationship satisfaction.
WARNINGS:
If you take any medicines that contain nitrates - either regularly or as needed
- you should never take Viagra.
If you take Viagra with any nitrate medicine or recreational drug containing
nitrates, your blood pressure could suddenly drop to an unsafe level. You could
get dizzy, faint, or even have a heart attack or stroke. Nitrates are found in
many prescription medicines that are used to treat angina (chest pain due to heart
disease) such as: nitroglycerin (sprays, ointments, skin patches or pastes, and
tablets that are swallowed or dissolved in the mouth), isosorbide mononitrate
and isosorbide dinitrate (tablets that are swallowed, chewed, or dissolved in
the mouth). Nitrates are also found in recreational drugs such as amyl nitrate
or nitrite ("poppers"). If you are not sure if any of your medicines
contain nitrates, or if you do not understand what nitrates are, ask your doctor
or pharmacist.
