Viagra is available in many dosages: 25 mg, 50 mg, 75 mg, 100 mg, 130 mg, 130 mg, 150 mg, 200 mg.
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For most patients, the recommended Viagra daily dose is 50 mg taken about 1 hour prior to sexual activity. Depending on efficiency and tolerability, the dose can be increased to 100 mg or decreased to 25 mg.
The maximum recommended dose is 100 mg. The maximum recommended multiplicity of administration is 1 time per day.
Elderly patients require no dose adjustment.
In renal insufficiency, from mild to moderate (creatinine clearance 30-80 ml/min), the dose adjustment is required. When severe renal insufficiency(creatinine clearance 30 mL/min), the dose should be reduced to 25 mg.
Violations of renal function
In renal insufficiency, from mild to moderate (creatinine clearance 30-80 ml/min), the dose adjustment is required. Patients with renal failure severe (creatinine clearance 30 mL/min), the dose should be reduced to 25 mg.
Abnormal liver function
As the removal of Sildenafil in patients with liver damage (eg, in cirrhosis) is impaired, the dose of generic Viagra should be reduced to 25 mg.
Children
The drug is not intended for use by children and adolescents under the age of 18.
Women
Canadian Viagra is not intended for use by women.
How to Take Viagra?
Take the required dosage of the drug about 1 hour before the planned sex. After about 30 minutes after taking the pill, Sildenafil will help you achieve an erection up to 4 hours if you are sexually excited. You will not have an erection if you take ED pills without sexual stimulation and desire. If you take generic Viagra after a fatty meal or alcohol, the ED medication will slow down its effect.
Before you take the remedy from Canadian Health Care Mall, it is necessary to conduct a full medical examination to determine the possible erectile dysfunction causes.
Sexual activity is associated with a certain risk for the heart, so before you start treatment with Viagra for erectile dysfunction, the doctor needs to assess the state of your cardiovascular system. The active ingredient of the medication has a vasodilatory effect which manifests in the momentary decrease in blood pressure. Thus, before you start using this drug, the doctor has to find out whether such effects have a negative effect on patients with certain diseases, especially during sexual activity.
The efficiency and safety of simultaneous use of Sildenafil with other drugs for erectile dysfunction from Canadian Pharmacy have not been studied yet. In this regard, the combined use of such medication is not desirable.
Sildenafil enhances the hypotensive effect of nitrates, so Viagra is contraindicated with the combined use of nitrates and nitric oxide donors (such as amyl nitrite). Sildenafil and alcohol combination is also undesirable.