Warning
You must not take Viagra with the following medications:

Viagra ® (sildenafil citrate) is contraindicated in patients
who are taking organic nitrates in any form at any time.
Consistent with its known effects on the nitric oxide/cGMP pathway, Viagra ® was shown to potentiate the hypotensive effects of nitrates and its administration to patients who are concurrently using organic nitrates in any form is therefore contraindicated.
Viagra ® is indicated for the treatment of Erectile Dysfunction.
The following is a list of some commonly prescribed Nitrates by class.
This list is illustrative. It is not meant to be all-inclusive.
DRUG MANUFACTURER
Nitroglycerin  
  Deponit® (transdermal) Schwarz Pharma., Inc.
  Nitrek (transdermal) Bertek Pharmaceuticals, Inc.
  Nitro-Bid® Hoechst Marion Roussel
  Nitrodisc G.D. Searle Company
  Nitro-Dur® Key Pharmaceuticals, Inc.
  NitrogardTM Forest Pharmaceuticals, Inc.
  Nitroglyn Kenwood Laboratories
  Nitrlingual Spray® Rhone-Poulenc Rorer Pharmaceuticals, Inc.
  Nitrol® Ointment (Apoll-Kit)® Savage Laboratories
  Nitrong Rhone-Poulenc Rorer Pharmaceuticals, Inc.
  Nitro-Par Parmed Pharmaceuticals
  Nitrostar® Parke-Davis
  Nitro-Time Time-Cap Laboratories
  Transderm-Nitro® Novartis Pharmaceuticals Corporation
Isosorbide Mononitrate  
  Imdur® Key Pharmaceuticals, Inc.
  Ismo® Wyeth-Ayerst Laboratories
  Monoket® Tablets Scharz Pharma, Inc.
Isosorbide Dinitrate  
  Dilarate®-SR Scharz Pharma, Inc.
  Isordil® Wyeth-Ayerst Laboratories
  Sorbitrate® Zeneca Pharmaceuticals
Erythatyl Tetranitrate  
Pentaerythritol Tetranitrate  
Sodium Nitroprusside  

Substances such as amyl nitrite (poppers), which are sometimes abused, should never be combined with Viagra®. Viagra® is not contraindicated with nitrates found in food.

Viagra may cause difficulty in your vision to distinguish BLUE and
GREEN colors possibly making operation of equipment unsafe.

For maximum safety our physicians recommend that you
DO NOT OPERATE
EQUIPMENT WITHIN 8 HOURS OF TAKING VIAGRA!


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