Viagra

What is Viagra Canadian Pharmacy?

Initially, Viagra was developed to treat cardiovascular disorders. Nowadays, it is widely used for erectile dysfunction treatment. The chemical formula of Viagra is C22H30N6O4S. Canadian Pharmacy Viagra main active substance is Sildenafil.

The medication suppresses cGMP-specific phosphodiesterase enzyme type-5 (PDE5 inhibitor), which regulates cyclic guanosine monophosphate or cGMP degradation. The cGMP regulates blood flow in penile vessels.

Canadian Pharmacy Viagra Generics

Generic Viagra Canadian Pharmacy was developed by specialists located at Sandwich, Kent, England. It was initially researched for the treatment of angina pectoris (ischaemic heart disease) and hypertension, or high blood pressure.

Viagra was registered in 1996, and in 1998 was approved by FDA for erectile dysfunction treatment. This was the first oral treatment approved in the United States for erectile dysfunction treatment for sale.

Dosage of Canadian Generic Viagra

Viagra Canada should be taken in accordance with your doctor’s recommendation and instructions for use. Usually, the drug is taken only when required, 30-40 minutes before sexual act. Viagra dosage should not exceed one tablet per day.

The average recommended dosage of Viagra is 50 mg, once a day, 1 hour prior to sexual activity.  Maintenance dosage is 25 to 100 mg pill, taken orally, once a day with doctor’s recommendations.

Viagra Overdose

Viagra Overdose can cause long-lasting erection, known as priapism, as well as nausea, pain in the chest and irregular heartbeat. If priapism does not disappears within 24 hours, the penis may be injured, causing difficulty in achieving future erection.

Viagra Side Effects

Viagra Canadian Pharmacy, as any other drug, has some side effects: hives; headache, dyspnea, allergic reactions, face, lips, tongue, or throat swelling. Consult your doctor if you notice any of these symptoms. One great Viagra advantage is that the percentage of side effects is very small (only 2%).

Viagra Contraindications

  • Co-use with nitrates (such as nitroglycerine, isosorbide), since Viagra may intensify hypotensive effects of nitrates;
  • Hypersensitivity to Sildenafil.

Viagra Interactions

  • Viagra is not compatible with nitrates; amlodipine, ritonavir and other CYP3A4 inhibitors, alpha-blockers. All these medications may affect Viagra effect. Co-use of Viagra and these medications can give unpredictable results.
  • Do not use Viagra Canada Pharmacy with similar remedies for erectile dysfunction treatment, such as Avanafil (Stendra), Vardenafil (Levitra), Tadalafil (Cialis) and alcohol. Inform your doctor about other remedies you apply for erectile dysfunction treatment.

Inform your doctor about medications you’ve taken recently or are taking currently, such as:

  • Antibiotics (for example, erythromycin, clarithromycin, telithromycin);
  • antifungal medications (for example, ketoconazole or itraconazole);
  • means used for HIV/AIDS treatment (for example, ritonavir, saquinavir, atazanavir, indinavir, or drugs for a prostate disorder and high blood pressure.