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Generic Name: sildenafil (oral) (sil DEN uh fil)
Brand Names: Revatio, Viagra
Viagra relaxes muscles and increases blood flow to particular areas of the body.
Sildenafil under the name Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women.
Viagra may also be used for other purposes not listed in this medication guide.
Viagra can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking Viagra, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old. It is not clear whether Viagra is the actual cause of vision loss.
Stop using Viagra and get emergency medical help if you have sudden vision loss.Before taking Viagra, tell your doctor if you are allergic to any drugs, or if you have:
heart disease or heart rhythm problems;
a recent history (in the past 6 months) of a heart attack, stroke, or heart rhythm disorder;
congestive heart failure;
high or low blood pressure;
coronary artery disease;
liver disease;
kidney disease;
a blood cell disorder such as sickle cell anemia, multiple myeloma, or leukemia;
a bleeding disorder such as hemophilia;
a stomach ulcer;
retinitis pigmentosa (an inherited condition of the eye);
a physical deformity of the penis (such as Peyronie's disease); or
if you have been told you should not have sexual intercourse for health reasons.
If you have any of these conditions, you may need a dose adjustment or special tests to safely take Viagra.
Viagra can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking Viagra, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old. It is not clear whether Viagra is the actual cause of vision loss. Stop using Viagra and get emergency medical help if you have sudden vision loss. FDA pregnancy category B: This medication is not expected to be harmful to an unborn baby. Do not use Viagra without telling your doctor if you are pregnant or plan to become pregnant during treatment. It is not known if Viagra passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.Take Viagra exactly as it was prescribed for you. Do not take it in larger doses or for longer than recommended by your doctor. Follow the directions on your prescription label.
Revatio is usually taken three times each day, about 4 to 6 hours apart.
Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day.
Viagra can help you have an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor's instructions.
During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of Viagra. Store this medication at room temperature away from moisture and heat.Viagra is used as needed, so you are not likely to be on a dosing schedule.
If you miss a dose of Revatio, take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.
Stop using Viagra and call your doctor at once if you have any of these serious side effects:
sudden vision loss;
ringing in your ears, or sudden hearing loss;
chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling;
irregular heartbeat;
swelling in your hands, ankles, or feet;
shortness of breath;
vision changes;
feeling light-headed, fainting; or
Less serious side effects may include:
warmth or redness in your face, neck, or chest;
stuffy nose;
headache;
upset stomach; or
back pain.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.
Before taking Viagra, tell your doctor about all other medications you use for erectile dysfunction, or if you are using any of the following medications:
bosentan (Tracleer);
a blood thinner such as warfarin (Coumadin);
cimetidine (Tagamet, Tagamet HB);
an antibiotic such as erythromycin (E-Mycin, Eryc, Ery-Tab) or clarithromycin (Biaxin);
doxazosin (Cardura), prazosin (Minipress), Terazosin (Hytrin);
HIV medicines such as amprenavir (Agenerase), tipranavir (Aptivus), darunavir (Prezista), efavirenz (Sustiva), nevirapine (Viramune), indinavir (Crixivan), saquinavir (Invirase, Fortovase), lopinavir/ritonavir (Kaletra), fosamprenavir (Lexiva), ritonavir (Norvir), atazanavir (Reyataz), or nelfinavir (Viracept);
an antifungal medication such as itraconazole (Sporanox) or ketoconazole (Nizoral);
carbamazepine (Tegretol), phenobarbital (Luminal), or phenytoin (Dilantin); or
rifampin (Rifadin, Rimactane) or rifabutin (Mycobutin).
This list is not complete and there may be other drugs that can interact with Viagra. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Sildenafil is available with a prescription under the brand names Viagra and Revatio. Other brand or generic formulations may also be available. Ask your pharmacist any questions you have about this medication, especially if it is new to you.
Revatio 20 mg - white, film-coated round tablets
Viagra 25 mg - blue, film-coated tablets with a rounded-diamond shape
Viagra 50 mg - blue, film-coated tablets with a rounded-diamond shape
Viagra 100 mg - blue, film-coated tablets with a rounded-diamond shape
Viagra needs no introduction!
Pfizer's wonder drug, sildenafil, better known as Viagra,
is the trusted treatment for male impotence problems. Introduced
in 1998, Viagra, the famous erectile dysfunction
(ED) drug, has been a profound influence in the human souls
by such a fathom that not a single day has passed without
seeing ads of the magical Erectile Dysfunction pill.
Erectile Dysfunction (ED), also known as Impotence, is the
inertia of sustaining an erect penis, during or before sexual
intercourse. Erectile Dysfunction (Impotence) - inability
to maintain the erection of the penis for satisfactory sexual
intercourse in spite of the capability of ejaculation.
Viagra has been a proved veteran in the treatment of Erectile
Dysfunction (Impotence), which acts by increasing blood
flow to the penis, thus improving a man’s response to
sexual stimulation, thus allowing him to lead a normal sexual
life. With Viagra in your hand, you are no longer an alien
in solitude and Erectile Dysfunction signifying the dusk of
unsung glory.
Viagra works by helping the
blood vessels in the penis to relax, allowing blood to flow
into the penis causing an erection. For Viagra to be effective,
sexual stimulation is required.
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