Viagra is an effective treatment for men with erectile dysfunction. Since its approval from the FDA in March 1998, more than 1 million prescriptions have been filed in the United States.

However, VIAGRA must not be used with nitroglycerin or similar drugs used to treat the chest pains of heart disease.

The danger is that Viagra and nitroglycerin combined can make your blood pressure plunge to a dangerously low level; you could get dizzy, faint, or even have a heart attack or stroke.

Nitrates are found in many prescription medications 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").

Viagra should not be taken if you have severe heart disease or are unable to tolerate normal sexual activity.

The amount of energy necessary to have normal sexual activity is roughly equivalent to the ability of climbing one flight of stairs without chest discomfort - if you are unsure, see a phyisician.

The following is a list of organic nitrates.
This list is illustrative only (i.e. is not all-inclusive).

Nitroglycerin	Isosorbide Mononitrate
Deponit	Imdur
Minitran	ISMO
Nitrek	Isosorbide Mononitrate
Nitro-Bid	Monoket
Nitrocine
Nitro-Derm	Isosorbide Nitrate
Nitro Disc	Dilatrate-SR
Nitro-Dur	Iso-bid
Nitrogard	Isordil
Nitroglycerin	Isordil Tembids
Nitroglycerin T/R	Isosorbide Dinitrate
Nitroglyn	Isosorbide Dinitrate LA
Nitrol Ointment	Sorbitrate
Nitrolan	Sorbitrate SA
Nitrolingual Spray
Nitrong	Pentaerythritol Tetranitrate
Nitropar	Peritrate
Nitropress	Peritrate SA
Nitroprex
Nitro S.A.	Erythrityl Tetranitrate
Nitrospan	Cardilate
Nitrostat
Nitro-Trans System	Illegal Drugs Containing
Nitro Transdermal	Organic Nitrates
Nitro-Time
Transderm-Nitro	Substances such as
Tridil	amyl nitrite ("Poppers")

Other Medical Conditions

Men who have medical conditions that may cause a sustained erection such as sickle cell anemia, leukemia or multiple myeloma or who have an abnormally shaped penis may not be able to take Viagra.

Excessively Prolonged Erections

In the rare event of an erection lasting more than 4 hours, seek immediate medical help.

Viagra is not suitable or effective for Women

Viagra has not been confirmed as safe for women. Furthermore, it has not even been shown to be effective in women. So ladies, please don't take Viagra! You'll be wasting your money, and may be placing your health at risk.