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Brand Viagra is used for various disorders in the sexual sphere. This drug helps to achieve an erection, but at the same time, does not have a therapeutic effect on dysfunction, since it acts symptomatically.

Pharmacological action

The action of this drug is determined by the ability of the active component – sildenafil, to inhibit phosphodiesterase 5. This enzyme is involved in the breakdown of cyclic guanosine monophosphate, necessary for relaxing the muscles of the cavernous body. With the relaxation of the cavernous body muscles, blood flow in the penis improves, its size increases, erectile function normalizes, subject to sexual excitement. An important component for an erection is nitric oxide, the relaxing effect of which sildenafil enhances. The digestibility of the drug is 40%. Metabolism occurs in the liver. Excretion occurs mainly with feces.

Release form, composition

The drug is produced in tablets covered by a shell for oral administration. 1 tablet of the product contains: sildenafil citrate, calcium hydrogen phosphate, magnesium stearate, croscarmellose sodium, titanium oxide, glycerol triacetate, and others, including lactose.

Indications for use

The drug is indicated for the use in erectile dysfunction of various etiologies.

Contraindications

Brand Viagra use is contraindicated in the presence of increased sensitivity and intolerance to the components of the drug, as well as in the presence of factors such as:

  • predisposition to bleeding;
  • injuries, deformations of the penis;
  • ulceration on the gastrointestinal mucosa;
  • violations of the liver;
  • severe liver failure;
  • cirrhosis of the liver;
  • prolonged painful erection;
  • persistent high blood pressure;
  • persistent reduced pressure;
  • arrhythmia;
  • angina pectoris;
  • heart failure;
  • age under 18 years old.

In the event that there is a history of myocardial infarction and stroke, you should refrain from taking the drug for 6 months after the disease. In no case, you cannot combine the drug with medications that affect nitric oxide.

The period of pregnancy and breastfeeding

The drug is not intended for use by women. According to studies and experiments on animals, the drug has no teratogenic effects on the fetus.

Mode of application

1 tablet of Brand Viagra is recommended to be taken 1 hour before sexual intercourse. The optimal daily dosage is 50 mg once a day. Depending on individual factors, the dosage can be increased to 100 mg per day or reduced to 25 mg per day. 100 mg of sildenafil is the maximum daily dosage.

Overdose

A drug overdose is manifested in the increase in some side effects. The treatment is symptomatic. Dialysis is not recommended since it will be ineffective, as the agent quickly binds to plasma.

Side effects

During the use of the drug, the following effects may occur:

  • headache;
  • sleep disturbance;
  • visual impairment;
  • tinnitus;
  • increased muscle tone;
  • conjunctivitis;
  • pharyngitis;
  • sinusitis;
  • skin rash;
  • gastrointestinal upset;
  • nausea;
  • vomiting;
  • dry mouth.