Viagra (Sildenafil)

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Dosage:

  • 25 mg
  • 50 mg
  • 100 mg

Can I buy Viagra without a prescription?

People know generic Viagra as a very popular aphrodisiac that is notable for its ability to treat the loss of sexual power. This medicine facilitates the achievement of erection and, particularly, makes it simpler to keep it with sexual stimulation. Despite the widespread misconception, this drug does not treat astysia. As a matter of fact, its symptomatic action only helps men attain an erection.

Some people know this pharmaceutical by the name of its active material, which is sildenafil.

Since it is very popular, every Internet user can find generic Viagra without a prescription on numerous websites in the global network. Nevertheless, medics encourage people to consider probable negative consequences that might arouse after misusing pharmaceuticals. Be aware that some dishonest manufacturers produce counterfeit drugs. Consult your physician before taking medications.

Pharmacological action to Viagra

This pharmaceutical helps males with the normalization of erection attaining by its effect on specific natural enzymes. The latter make sexual arousal possible. The process of sexual stimulation is followed by the production of a significant amount of nitrogen oxide. Thus, cavernous bodies of penis gets more blood flow, because vessels become more dilated.

Characteristically, nitrogen oxide does not make impact on vessels by itself; it does so thanks to cyclical guanosine monophosphate, which is the second mediator that gets activated. Sildenafil provides the activity inhibition of enzyme that is responsible for molecular destruction or cyclical guanosine monophosphate.

As the result, Viagra has longer effect, because vessels remain dilated for a prolonged period. A natural erection is achieved.

What is contraindicated to generic Viagra without a prescription?

Patient’s hypersensitivity to the active material or any component of the pharmaceutical implies that it is contra-indicative. Provided that an individual needs to avoid sexual activity due to some medical reasons, he should not take any medications that are supposed to treat male erectile disorder. It regards such illnesses as:

  1. Instable stenocardia
  2. Acute impairment of cardial function

Women and the minorities (people under 18 years old) should stay away from Viagra.

People with vision lost due to cranial nerve ischemic neuropathy need to avoid this medicine as well.

Sildenafil should not be prescribed for the following cases:

  • Acute impairment of hepatic function
  • Arterial hypotension (given that the pressure is 90/50 or lower)
  • Recent stroke or myocardial infarction
  • Pigmented retinitis and other known inherited degenerative illnesses of retina

Caution is required during male erectile disorder therapy with such pharmaceuticals if patients suffer anatomic deformations of penis, like cavernous fibrosis, angulation, or Peyronie’s disease. It also regards people suffering priapism tendency, which involves plasma cell myeloma, drepancytic anemia, and leukemia.

What are the adverse reactions to Viagra?

Medics have witnessed the following adverse reactions to this aphrodisiac:

  1. Feeling of flush
  2. Somnolence
  3. Ear noise
  4. Gastric indigestion
  5. Headaches
  6. Dizziness
  7. Color perception disturbance
  8. Stuffiness in nose
  9. Blurred vision
  10. Reduced skin sensitivity

Rarer cases include such diseases as:

  • Hypertension
  • Hypotension
  • Development of hypersensitivity reaction
  • Nose bleeding

In addition, some individuals might suffer increased lassitude, skin eruption, and dry mouth.

What should I do in case of overdose with sildenafil?

Clinical trials have shown that such case includes more apparent negative effects. If you are concerned with any of the mentioned signs, seek for medical advice.

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