What is Viagra? Viagra (sildenafil) relaxes muscles and increases blood flow to certain locations in the body. Sildenafil beneath the name Viagra is applied to treat erectile dysfunction (impotence) in males. Yet another brand of sildenafil is Revatio, that is made use of to treat pulmonary arterial hypertension and boost exercising capacity in men and women. Don't take Viagra even though also taking Revatio, unless your medical doctor tells you to. Viagra might also be made use of for other purposes not listed in this medication guide. Important facts about Viagra Usually do not take Viagra if you are also making use of a nitrate drug for chest pain or heart problems. This consists of nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and other individuals), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket). Nitrates are also identified in some recreational drugs which include amyl nitrate or nitrite ("poppers"). Taking Viagra with a nitrate medicine may cause a sudden and really serious reduce in blood pressure. In the course of sexual activity, should you grow to be dizzy or nauseated, or have discomfort, numbness, or tingling in your chest, arms, neck, or jaw, cease and contact your medical doctor instantly. You can be possessing a really serious side effect of Viagra. Usually do not take Viagra greater than as soon as per day. Let 24 hours to pass between doses. Contact your doctor or seek emergency health-related consideration if your erection is painful or lasts longer than 4 hours. A prolonged erection (priapism) can damage the penis. Viagra can lower blood flow to the optic nerve with the eye, causing sudden vision loss. This has occurred in a little quantity of folks taking Viagra, most of whom also had heart illness, diabetes, high blood pressure, high cholesterol, or particular pre-existing eye difficulties, and in people that smoke or are over 50 years old. It isn't clear irrespective of whether Viagra would be the actual result in of vision loss. Quit using Viagra and get emergency healthcare assist should you have sudden vision loss. Before taking Viagra Usually do not take Viagra if you are also applying a nitrate drug for chest pain or heart troubles. This consists of nitroglycerin (Nitrostat, Nitrolingual, Nitro-Dur, Nitro-Bid, and others), isosorbide dinitrate (Dilatrate-SR, Isordil, Sorbitrate), and isosorbide mononitrate (Imdur, ISMO, Monoket). Nitrates are also found in some recreational drugs which include amyl nitrate or nitrite ("poppers"). Taking Viagra having a nitrate medicine can cause a sudden and serious decrease in blood pressure. To make certain it is possible to safely take Viagra, tell your doctor when you have any of those other conditions: heart illness or heart rhythm complications; a recent background (in the past 6 months) of a heart attack, stroke, or congestive heart failure; high or low blood pressure; coronary artery illness; liver or kidney diseas; a blood cell disorder for instance sickle cell anemia, numerous myeloma, or leukemia; a bleeding disorder such as hemophilia; a stomach ulcer; retinitis pigmentosa (an inherited situation of your eye); a physical deformity in the penis (for example Peyronie's disease); or if you have been told you ought to not have sexual intercourse for health reasons. how to get viagra canada Viagra can lower blood flow towards the optic nerve on the eye, causing sudden vision loss. This has occurred inside a tiny quantity of people today taking Viagra, most of whom also had heart illness, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye issues, and in people who smoke or are over 50 years old. It's not clear no matter whether Viagra would be the actual trigger of vision loss. Stop employing Viagra and get emergency healthcare enable for those who have sudden vision loss. FDA pregnancy category B: This medication isn't expected to be harmful to an unborn child. Don't use Viagra without telling your medical professional for anyone who is pregnant or plan to develop into pregnant in the course of treatment. It's not known if sildenafil passes into breast milk or if it could harm a nursing infant. Tend not to use this medication with no telling your doctor when you are breast-feeding a baby. See also: Viagra pregnancy and breastfeeding warnings (in a lot more detail) How ought to I take Viagra? Take Viagra precisely as prescribed by your doctor. Don't take in larger or smaller amounts or for longer than encouraged. Comply with the directions in your prescription label. Viagra is normally taken only when required, 30 minutes to 1 hour before sexual activity. You may take it as much as four hours before sexual activity. Tend not to take Viagra greater than as soon as per day. Viagra will help you've got an erection when sexual stimulation occurs. An erection is not going to take place just by taking a pill. Adhere to your doctor's instructions. Throughout sexual activity, in case you develop into dizzy or nauseated, or have discomfort, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You may be getting a significant side effect of Viagra. Retailer this medication at space temperature away from moisture and heat. See also: Viagra dosage (in far more detail) What takes place if I miss a dose? Viagra is employed as necessary, so you might be not probably to become on a dosing schedule. What takes place if I overdose? Seek emergency health-related attention or get in touch with the Poison Enable line at 1-800-222-1222. Overdose signs and symptoms may well include chest pain, nausea, irregular heartbeat, and feeling light-headed or fainting. What must I avoid even though taking Viagra? Stay clear of drinking alcohol, which can improve several of the negative effects of Viagra. Stay away from making use of other medicines to treat impotence, for example alprostadil (Caverject, Muse, Edex) or yohimbine (Yocon, Yodoxin, others), without 1st talking to your doctor. See also: Viagra and alcohol (in more detail) Viagra side effects Get emergency healthcare assistance should you have any of these indicators of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. In the course of sexual activity, if you turn out to be dizzy or nauseated, or have discomfort, numbness, or tingling within your chest, arms, neck, or jaw, quit and call your doctor instantly. You may be obtaining a severe side effect of Viagra. Cease applying Viagra and contact your doctor at after when you have a really serious side impact for example: sudden vision loss; ringing within your ears, or sudden hearing loss; chest pain or heavy feeling, discomfort spreading for the arm or shoulder, nausea, sweating, common ill feeling; irregular heartbeat; swelling within your hands, ankles, or feet; shortness of breath; vision modifications; feeling light-headed, fainting; or penis erection that is definitely painful or lasts 4 hours or longer. Less significant Viagra unwanted effects may perhaps include: warmth or redness in your face, neck, or chest; stuffy nose; headache; memory troubles; upset stomach; or back pain. This is not a comprehensive list of unwanted side effects and others could take place. Call your doctor for medical guidance about unwanted effects. You could report unwanted effects to FDA at 1-800-FDA-1088. See also: Viagra side effects (in much more detail) What other drugs will affect Viagra? Tend not to take Viagra with similar medications which include tadalafil (Cialis) or vardenafil (Levitra). Do not take Viagra if you're also applying a nitrate drug for chest discomfort or heart troubles, which includes 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 which include amyl nitrate or nitrite ("poppers"). Ahead of taking Viagra, inform your medical doctor about all other medications you use for erectile dysfunction, or for anyone who is employing any of your following medications: bosentan (Tracleer); cimetidine (Tagamet, Tagamet HB); conivaptan (Vaprisol); imatinib (Gleevec); isoniazid (for treating tuberculosis); rifampin (Rifadin, Rimactane, Rifater, Rifamate); an antidepressant for example nefazodone; an antibiotic for example clarithromycin (Biaxin), dalfopristin/quinupristin (Synercid), erythromycin (E.E.S., EryPed, Ery-Tab, Erythrocin, Pediazole) or telithromycin (Ketek); antifungal medication like itraconazole (Sporanox), ketoconazole (Nizoral), miconazole (Oravig), or voriconazole (Vfend); heart or blood pressure medication such as diltiazem (Cardizem, Dilacor, Tiazac), doxazosin (Cardura), nicardipine (Cardene), quinidine (Quin-G), or verapamil (Calan, Covera, Isoptin, Verelan); or HIV/AIDS medicine including atazanavir (Reyataz), delavirdine (Rescriptor), fosamprenavir (Lexiva), indinavir (Crixivan), nelfinavir (Viracept), saquinavir (Invirase), or ritonavir (Norvir, Kaletra). This list isn't complete and there may be other drugs that will interact with Viagra. Inform your medical professional about all of the prescription and over-the-counter medications you use. This involves vitamins, minerals, herbal products, and drugs prescribed by other physicians. Tend not to begin using a new medication with out telling your physician. Viagra