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Learn MoreViagra (sildenafil)
Brand Name
Viagra {Pfizer}
Generic Name
sildenafil citrate, pronounced sil DEN uh fil si trate
Product (brand)
Strength & Quantity
Viagra
(Sildenafil (Sildenafil Citrate))
(Sildenafil (Sildenafil Citrate))
Strength & Quantity
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Product (generic)
Strength & Quantity
Sildenafil
(Sildenafil (Sildenafil Citrate))
(Sildenafil (Sildenafil Citrate))
Strength & Quantity
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Drug Guide
The information contained in the following drug guide is intended as an educational resource only. This guide is not exhaustive and does not contain all available information about this drug.This guide is not intended as medical advice for individual conditions or treatment.
The information provided in this guide does not replace the need for the advice and services of medical professionals or the need for medical examination. Always talk to your physician or pharmacist before taking any prescription medication or over the counter drugs (including any supplements) or before making any changes to your treatment. Only your doctor, nurse or pharmacist can provide you with safe and effective advice regarding your drug treatment.
The use of the information in this guide is at your sole risk. This information is provided "AS IS" with no warranties to accuracy or timeliness.
**All trademarks and registered trademarks are the property of their respective owners.
What is Viagra?
Viagra is used to treat impotence, or Erectile Dysfunction (ED) in men. Viagra helps by
relaxing muscles and increasing blood flow to particular areas of the body.
Viagra may also be used for additional purposes which are not listed in this medication
guide.
Key Facts About Viagra
You should not take Viagra more than one time in a 24 hour period.
Contact your doctor immediately if you have an erection that lasts longer than 4 hours, or is
painful.
Viagra may decrease blood flow to the optic nerve of your eye, which may cause a sudden loss
of vision. This rare occurrence has happened mostly in people who took Viagra and had heart
disease, diabetes, high blood pressure, high cholesterol, were smokers, were over age 50, or had
certain pre-existing eye conditions. We still do not know if Viagra caused the actual vision
loss. If you experience sudden loss of your vision stop using Viagra right away and seek
emergency medical attention.
If you are taking a nitrate drug for chest pain or heart problems you should not take Viagra.
These medications include nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and
others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate
(Imdur, ISMO, Monoket). Nitrates can also be found in some recreational drugs like amyl nitrate
or nitrite (“poppers”). If you take Viagra and a nitrate drug you may experience a serious and
sudden decrease in your blood pressure.
While taking Viagra, and during sexual activity, if you become dizzy or nauseated, or if you
experience numbness, tingling or pain in your chest, arms, neck, or jaw, stop and call your
doctor immediately. These signs could indicate that you are having a serious reaction to
Viagra.
Before You Take Viagra
If you are allergic to sildenafil citrate you should not take Viagra.
You should not take Viagra if you are taking nitrate medications. This includes nitroglycerin
(Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate (Dilatrate-SR,
Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket).
If you take Viagra alongside nitrate medications you put yourself at risk of having a serious
and sudden drop in blood pressure.
Tell your doctor if you have either heart disease, a heart attack, a stroke, congestive heart
failure or heart rhythm problems before taking Viagra.
Tell your doctor if you have high or low blood pressure, or coronary artery disease before
taking Viagra.
You should inform your doctor if you have kidney or liver disease, or if you have a stomach
ulcer.
If you have a blood disorder like sickle cell anemia, multiple myeloma, or leukemia, or a
bleeding disorder like hemophilia you should tell your doctor.
Let your doctor know if you have retinitis pigmentosa, which is an inherited condition of the
eye, before taking Viagra.
If you have a physical deformity of the penis, like Peyronie’s disease, or if you have
previously been told that you should not have sexual intercourse for health reasons, you may not
be a candidate to take Viagra.
Viagra Drug Interactions
You should inform your doctor if you are taking any of the following:
- alprostadil (Caverject, Muse, Edex)
- antibiotics clarithromycin (Biaxin), dalfopristin/quinupristin (Synercid), erythromycin
- (E.E.S., EryPed, Ery-Tab Erythrocin, Pediazole) or telithromycin (Ketek)
- antifungal medications itraconazole (Sporanox), ketoconazole (Nizoral), miconazole (Oravig),
- or voriconazole (Vfend)
- atazanavir (Reyataz)
- bosentan (Tracleer)
- cimetidine (Tagamet, Tagamet HB)
- conivaptan (Vaprisol)
- delavirdine (Rescriptor)
- diltiazem (Cardizem, Dilacor, Tiazac)
- doxazosin (Cardura)
- fosamprenavir (Lexiva)
- imatinib (Gleevec)
- indinavir (Crixivan)
- isoniazid (for treating tuberculosis)
- nefazodone (an antidepressant)
- nelfinavir (Viracept)
- nicardipine (Cardene)
- nitrate medications like nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid,
- Minitran, Deponit, Transderm-Nitro), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate),
- and isosorbide mononitrate (Imdur, ISMO, Monoket), or recreational drugs like amyl nitrate or
- nitrite (“poppers”)
- quinidine (Quin-G)
- rifampin (Rifadin, Rimactane, Rifater, Rifamate)
- ritonavir (Norvir, Kaletra)
- saquinavir (Invirase)
- verapamil (Calan, Covera, Isoptin, Verelan)
- yohimbine (Yocon, Yodoxin)
Other drugs you take that are not listed may interact with Viagra. You should tell your doctor
about all of the medications you use. This includes prescription drugs, vitamins, supplements and
herbal products, and over the counter medications. You should not begin taking a new medication
without telling your doctor first.
Directions for Taking Viagra
Viagra should be taken as needed, about 30 minutes to 1 hour before sexual activity. You may
take Viagra up to 4 hours before sexual activity. Do not take Viagra more than once per day, or
every 24 hours.
Viagra may help you to have an erection when sexual stimulation occurs. You cannot just get an
erection by taking Viagra. Let your doctor know if you have any concerns about how you should
take this medicine.
Viagra should be stored at room temperature, and away from both moisture and heat.
If you miss a dose of Viagra you should be sure that your last dose was at least 24 hours ago.
Do not take 2 doses at once, or take doses any sooner than one day, or a full 24 hours apart.
Viagra Side Effects
If you experience any of the following adverse effects you should stop taking Viagra and seek
emergency medical help immediately:
- While you are engaging in sexual activity, if you should become dizzy, nauseated, or have
- pain, tingling or numbness in your chest, arms, neck, or jaw, stop and call your doctor
- immediately. These side effects could indicate a serious adverse effect of Viagra.
- chest pain or a heavy feeling in your chest
- chest pain that spreads to your arm or shoulder, accompanied by nausea, sweating and a general
- ill feeling
- fainting or feeling faint
- irregular heartbeat
- loss of vision
- penis erection that lasts 4 hours or longer or is painful
- ringing in your ears, or a sudden loss of hearing
- shortness of breath
- swelling in your hands, ankles, or feet
- vision changes
Less serious side effects of Viagra are:
- back pain
- headache
- memory problems
- stuffy nose
- upset stomach
- warmth and redness on your face, neck or chest
It should be noted that this is not a complete list of possible side effects of Viagra. You
should contact your physician for a complete list and medical advice regarding these effects.
Viagra Description and Dosing
Viagra is available in 3 strengths, 25mg, 50mg and 100mg.
The 25mg Viagra tablet is blue and film coated, with a rounded-diamond shape.
The 50mg Viagra tablet is blue and film-coated, with a rounded-diamond shape.
The 100mg Viagra tablet is blue and film-coated, with a rounded-diamond shape.
Viagra is dosed individually for each patient. You should follow your doctor’s instructions
for taking Viagra exactly as it prescribed for you.
All people taking Viagra should consult their doctor for specific dosing pertaining to them.
Do not attempt to alter or change your dose without your physician’s consent.
If you believe you have overdosed on Viagra you should seek medical help immediately.
Ingredients in Viagra
The main ingredient in Viagra is Sildenafil. Other ingredients are microcrystalline cellulose,
anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose,
titanium dioxide, lactose, FD & C Blue #2 aluminum lake and triacetin.
The information contained in this drug guide is intended as an educational resource only. This guide is not exhaustive and does not contain all available information about this drug.This guide is not intended as medical advice for individual conditions or treatment.
The information provided in this guide does not replace the need for the advice and services of medical professionals or the need for medical examination. Always talk to your physician or pharmacist before taking any prescription medication or over the counter drugs (including any supplements) or before making any changes to your treatment. Only your doctor, nurse or pharmacist can provide you with safe and effective advice regarding your drug treatment.
The use of the information in this guide is at your sole risk. This information is provided "AS IS" with no warranties to accuracy or timeliness.
**All trademarks and registered trademarks are the property of their respective owners.
