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viagra (sildenafil)

Viagra returns lost sexual function and assists in stable erect to the men

viagra (sildenafil)

Pharmacological action:

Viagra returns lost sexual function and assists in stable erect to the men. The mechanism of erection is as follows: There are corpora cavernosa in the penis. In order to have an erection, they should be completely filled with blood. An extensive network of small arterioles is inside these corpora cavernosa , which are filled with blood during relaxation of the muscles of the penis. This is only possible in the presence of nitric oxide. The drug Viagra inhibits PDE5 substance and provides the erection. Please note: to have an effect from the drug, a man must be in a state of sexual arousal. The adults male did not reported about the problems while taking the drug at a dose up to 100 mg.

Main indications for Viagra administration:

Erectile dysfunction (of organic or psychological nature)

Usage:

It is recommended the oral administration of the drug 30 minutes before sexual intercourse. The standard dose of Viagra is 50 mg. It is recommended the administration of the drug once taking with water. The organism of each man has his peculiarities, so the dosage may be increased or decreased. The main thing is not to exceed the maximum dose of 100 mg. The elder men should take the standard dose of 50 mg. The dosage increase does not give the better effect, but quality and quantity of side effects increase.

Side effects:

In most cases the drug is well tolerated by patients. However, in the process of clinical trials some negative effects were registered:

  • drowsiness, dizziness, possible pain in the neck, temples, forehead
  • drop in blood pressure (below normal figures), heat feeling
  • myalgia, discomfort in the joints when walking and movement
  • the absence or reduction of appetite, periodic nausea, irregular bowel movement
  • the appearance of punctulate rash on the skin
  • the deterioration of visual function, possible problems with color vision
  • respiratory disorder, rhinitis, upper respiratory tract infection
  • problems with the prostate gland, inflammation urinary tract

In some cases, the patients noted symptoms of acute respiratory disease and pain in the lumbus. In some cases priapism was registered.

The administration of the drug is contraindicated in the following cases:

  • hypersensitivity to the drug as a whole or to its individual components
  • deformation of the penis (congenital or acquired)
  • increased probability of bleeding
  • stomach and duodenum ulcer in the acute stage
  • decrease in filtration of the liver, various stage of renal insufficiency
  • abnormality of haematopoietic functions, including anemia, leukemia and myeloma
  • abnormality of arterial pressure (sharp increase or drop)
  • severe diseases of cardiovascular system (severe angina, arrhythmia, decompensated heart failure)

In the case of the individual intolerance or the appearance of allergic reaction you should immediately stop taking Viagra and apply for medical assistance. The severe forms of allergic reactions are dangerous for life and require the qualified treatment. If myocardial infarction or stroke was registered in the last 6 months it is contraindicated the preparation administration. It is contraindicated in children the preparation taking. It is contraindicated the coadministration of Viagra and preparations with nitro compounds and preparations emitting NO. The patients, who are contraindicated sexual intercourses, should abstain from Viagra intake. All other contraindications and peculiarities should be discussed with the doctor, who prescribed the preparation.

Pregnancy:

This medicine is not for women. The negative impact on fetus and female reproductive functions is not brought out during the clinical tests. The single intake of Viagra in therapeutic dose did not influence the quality of sperm negatively.

Combination with other medicines:

Co-administration of erythromycin antibiotics and ketoconazole leads to lower filtration rate of kidneys and increases the concentration of Viagra active ingredient in the blood. Co-administration of sildenafil and nitrates increases the risk of fall in blood pressure, even to coma and clinical death. It is prohibited to combine Viagra and drugs that reduce the level of glucose in blood and anti-arrhythmic drugs (especially beta blockers).

Storage conditions:

Viagra is stored in a dry place, away from children at room temperature. Shelf life is 2 years. It is not recommended to administrate expired drug.

Overdose:

Side effects were registered at the increase of the recommended dose. There is no Viagra antagonist so the symptomatic treatment should be carried out. Dialysis cannot be considered as effective treatment method because the medicine is connected with the liquid part of the blood and is not excreted from the organism.

Presentation:

The product is produced in the form of round film-coated tablet. The package contains one blister.

Composition:

Active component is sildenafil citrate. In addition each tablet contains magnesium stearate, mono acid calcium phosphate, titanium dioxide, colouring agent indigo carmine, lactose.

Special notes:

The sale of the medicine is made only on doctor’s orders.

Attention

This page contains the simplified description of the pharmaceutical drug Viagra and is not the official annotation. You should consult the specialist and read carefully the instructions before taking Viagra. This material is not for the purpose of self-treatment. Only the qualified specialist may prescribe the drug and to argue the necessity of its intake. The dosage is also prescribed by the doctor.