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The absolute contraindications of Viagra:

  • Symptoms of hypersensitivity to Sildenafil or to any ingredient of the drug;
  • Combined use with any drugs containing nitrates – on a regular basis or as needed – you should never use this preparation. If you combine Canadian Viagra with any drug which contains nitrates, your blood pressure can suddenly reduce to a dangerous value. You may feel dizzy, sick, or even suffer from a heart attack or a stroke. Nitrates are also contained in numerous prescription drugs which are used to treat unstable stenocardia (pain behind the sternum developed due to the cardiovascular disease). Drugs containing nitrates:
    1. Nitroglycerin (inhalants, ointments, skin pastes or tablets for oral administration, chewing pills);
    2. Isosorbide mononitrates andisosorbide dinitrates (tablets for oral use, chewing pills);
    3. Nitrates are also contained in the light drugs such as amyl nitrate or nitrite (also called “poppers”).

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Besides, you need to know whether you are allowed to be sexually active and whether you have heart diseases.

Note:

  • Viagra is indicated only for men with weak potency;
  • The drug is contraindicated in infants, children, and women;
  • Do not give your pills to other people.

Precaution

Only a doctor can prescribe Viagra to you and determine whether the drug will help in your case. Remember that Sildenafil citrate may cause a temporary drop in blood pressure level, so you are recommended undergoing a medical examination to confirm erectile dysfunction diagnosis and the fact that you can take the medication without any risk to your health and with other drugs prescribed to you. The physician should determine if your heart is able to tolerate loading during sexual activity.

Who Can't Take Viagra?Inform your attending doctor if you have recently suffered from:

  • Any heart problems (eg, stenocardia (chest pain), heart pain, cardiac arrhythmias, myocardial infarction, stenosis (narrowing) of the aorta;
  • a stroke;
  • low or high blood pressure level;
  • eyesight loss;
  • a rare congenital eye disease – retinitis pigmentosa;
  • kidney problems;
  • liver failure;
  • blood disorders, including sickle cell anemia or leukemia;
  • allergic reactions to Sildenafil or any other ingredient of the drug;
  • penis deformity (Peyronie’s disease);
  • an erection lasting more than 4 hours;
  • a bleeding ulcer or any other bleeding;
  • if you are taking any other medicines at the moment.

Special Warnings

It is necessary to collect a complete medical history and conduct a complete physical examination to confirm erectile dysfunction diagnosis and identify the causes of erectile dysfunction to select the adequate treatment. Sexual activity is always a risk for men if they have any heart diseases. In this connection, it is necessary to conduct a complete examination of the cardiovascular system before using Viagra from Canadian HealthCare Mall.

ED drugs should be used with caution in patients with anatomical deformation of the penis (such as angulation, cavernous fibrosis or Peyronie’s disease) and in patients with diseases that may provoke the development of priapism (such as sickle cell anemia, multiple myeloma or leukemia).

Drugs for erectile dysfunction treatment are contraindicated in men who are not recommended sexual activity. The safety and effectiveness of generic Sildenafil in combination with other drugs intended for erectile dysfunction treatment (Cialis, Levitra) have not been studied yet. In this regard, the use of these combinations is not desirable.

The medication produces no effect on bleeding in the body including when taken in combination with aspirin. In vitro studies of human platelets indicate that Viagra (Sildenafil) 100 mg enhances the antiplatelet effects of sodium nitroprusside (nitric oxide donator).

Studies on Viagra safety for patients with the bleeding diseases peptic ulcer disease have not been conducted so far. In this regard, these patients should use the drug with caution.

A few patients with hereditary retinitis pigmentosa have inherited disorders of retinal phosphodiesterases activity. Studies on the drug safety for patients with retinitis pigmentosa have not been conducted so far. Therefore, these patients should use Viagra from Canadian Health Care Mall with caution.

* Before you start taking these tablets, you need to pass a qualified medical examination that will enable the patient to detect the presence or absence of individual intolerance of various components of this medication for men.