Viagra, or sildenafil - is one of the most popular drugs for the treatment of erectile dysfunction.Initially, Viagra was developed specifically for men suffering from hypertension and angina, but in clinical trials, it has not shown good results as a cure for heart disease.But it turned out that a new drug stimulates the blood flow to the genital area, so men suffering from erectile dysfunction, erection temporarily restored.
Viagra causes relaxation Relaxation and stress - calm, not panic! smooth muscle, allowing the blood flows to the penis, and to some extent enhanced arousal.Once this was discovered "side effect" of the drug was conducted more than two dozen studies, which were attended in total, more than 3,700 people aged 19 to 87 years.All participants in clinical trials suffer from more or less severe erectile dysfunction caused by factors such as diabetes, spinal cord injury, prostate surgery.The research also involved people who identify the cause of impotence Impotence - a female perspective on the problem failed.The new drug was patented in 1996, and only six months later received an official permit for use in the treatment of erectile dysfunction.
How to take Viagra
Viagra should be taken before sexual intercourse.It is best to do it in an hour, but it can be done in a period of half an hour to four hours before sexual intercourse.Viagra should not take more than once a day.If you have a chronic illness, or you are taking medications, your physician will advise you to take this medication more often.You can take Viagra on an empty stomach or with a meal, but if you take it with a meal containing a large amount of fat, it will take more time to the drug began to act.Talk to your doctor if Viagra does not help, or causes severe side effects.
Before you start taking Viagra, tell your doctor if you are allergic to sindenafil or any other drugs.
Viagra should not be taken if you have recently taken medicines that contain nitrates, such as isosorbide dinitrate, isosorbide mononitrate, or nitroglycerin.Talk to your doctor if you are not sure whether the nitrates contained in the medications you are currently taking.
simultaneously with Viagra should not be taken so-called "poppers" - substances that are widely used today for that to strengthen and extend the orgasm.The most common way used amyl nitrite, butyl nitrite and isobutyl nitrile.
Before taking Viagra, tell your doctor about any medications you are currently taking, or planning to start taking in the near future.
Potentially dangerous is the use of Viagra at the same time with the following medications: alpha blockers such as alfuzosin, doxazosin, prazosin, tamsulosin, terazosin, and;Amlodipine;certain antifungal medicines such as itraconazole and ketoconazole (Nizoral);anticoagulants such as warfarin;barbiturates, such as secobarbital;Beta-blockers - atenolol, labetalol, metoprolol, nadolol, and propranolol;bosentan, cimetidine, efavirenz, erythromycin, protease inhibitors, including amprenavir, atazanavir, darunavir, fosamprenavir.In some cases, doses of these medications Viagra, or for the safety of the patient is necessary to substantially correct.
Tell your doctor about any herbal medicines you are taking (especially important to talk to your doctor to those who accept St. John's wort).
Tell your doctor if you smoke or have you ever had an erection Erection - what hinders and what helps a man to be a man , which lasted several hours, and, if you have recently lost a large amount of liquid.The latter could happen, for example, due to the intense heat, diarrhea, vomiting, sweating, and also due to the fact that you drank enough liquid.
Tell your doctor if you have ever had the following violations:
- Venookklyuzionnaya pulmonary disease;
- stomach ulcer;
- Heart disease, kidney or liver disease;
- heart attack;
- irregular heartbeat;
- chest pain;
- High or low blood pressure;
- Elevated cholesterol;
- bleeding disorders;
- problems with blood circulation;
- blood disorders such as sickle cell anemia, multiple myeloma, or leukemia;
- Diseases that affect the shape of the penis (such as Peyronie's disease);
If you have an operation, including - dental, be sure to tell your doctor who will operate on you that you are taking Viagra.
most common side effects of Viagra are:
- Hot flashes;
- Sleep problems Dreams: how to understand our dreams ;
- numbness, burning or tingling in the hands, legs or feet;
- muscle pain;
- change in color vision (patients begin to see blue tint in various objects or can not distinguish blue from green);
- Increased sensitivity to light.
If any of these side effects are very severe and persist for a long time, talk about it with your doctor.
seek emergency medical attention if after taking Viagra you experience any of these symptoms:
- sudden vision loss;
- Blurred vision - usually blurred visible objects;
- sharp deterioration or loss of hearing;
- dizziness or lightheadedness;
- chest pain;
- Severe shortness of breath;
- erection is painful or persists for more than four hours;
- Itching or burning during urination;
- skin rash.
recorded cases where patients taking Viagra, cases of heart attacks, strokes, blood pressure rises, you begin to pulmonary or cerebral bleeding.In some cases this has led to death.Most, but not all, of these patients had serious heart problems before they start to take Viagra.It is not known whether there were serious complications caused by Viagra, sexual activity and heart disease, or a combination of these or any other reasons.
vision loss in patients taking Viagra, is rare, but sometimes it is a constant;the reasons for this are not yet known.