Viagra contraindications

Safety is a question of utmost importance when treatment is taken. Man wants to get rid of erectile dysfunction but this does not mean that he is ready to solve medical problem at the expense of something else. The organism does not accept some chemical component, and it reacts accordingly. The risks can be of two kinds: either the dosage is too high or the medication can't be taken along with other medicines prescribed to treat some other problem of the patient. There is also such thing as individual intolerability to this or that substance in the formula that is impossible to detect in advance even by the doctor. Person should try the medicine and follow the reaction of his body.

Those who have hypersensitivity to Viagra should not take any medication that contains Sildenafil, for instance, Revatio. However, the hypersensitivity to some component of a tablet can appear as well. Usually rash and urticaria develops after intake of medication.

It can be hard to determine when dosage should be adjusted correctly and when it is better to avoid Viagra. The professional should take the decision on the basis of health history of the patient and his medical examination.

50 mg. dose is considered to be the normal dose for patients who do not have any health problems. It is taken 1 hour before the sexual intercourse. It starts working in half an hour and its action continues for 4 hours. One pill is taken per day. 100 mg. a day is the biggest dose that should be taken, but much depends upon tolerability of a patient.

Look at Viagra contraindications before you buy the medication. It is possible to make the preliminary analysis to protect yourself from possible problems. Interaction with nitric oxide/cGMP pathway shows the evident problems that can appear due to the effects of nitrates that are characterized with hypotensive effects. The patients who have to administer them should not take Viagra. Do not use Viagra if you take the nitrates on a regular basis. It is better considering some other alternative even if you take medicine with nitrates from time to time. The matter is that there is no definite information when exactly it is allowed to take Viagra after you administered some incompatible medication: for instance, nitroglycerin. Inform the doctor in case you take some medication (even rarely). The specialist should warn you that organic nitrites and nitrates should be excluded.

Viagra is widely prescribed by USA doctors as 10-30 million of men suffer from erectile dysfunction in the country. At the same time heart disease statistics beat all records in the United States, where 600 thousand people die of cardiovascular diseases annually. Medical researchers assure that erectile dysfunction is often connected with heart disease and even should be regarded as a warning symptom of heart disease. Therefore potentially hazardous situation can develop.

Doctors must not prescribe Viagra to patients who get nitrate therapy. The diagnoses include active coronary ischemia, congestive heart failure and etc. People on multidrug antihypertensive therapy should exclude Viagra as well. The specialists assure that it is still possible to do it under doctor's control but therapy is accompanied with risk therefore one needs to exercise caution when taking it.

People who had stroke or heart attack recently should avoid Viagra. The same caution is referred to those who have low blood pressure, impaired liver function, specific kidney problems, and the ones who experience hereditary degenerative retinal disorders.