About ViagraViagra is a drug for treatment of erectile dysfunction in men, characterized by the inability to get and maintain an erection. Viagra is not recommended for use in women and adolescents younger than 18 years.
Under the influence of Viagra, the smooth muscles of the cavernous body are relaxed and the blood flow to the penis is increased. The drug provides a systemic vasodilating effect lowering blood pressure. |
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The recommended daily dose of Viagra is 50 mg orally, about an hour before sexual activity. Nevertheless, the patient can take the drug 3 hours prior to copulation. Considering the drug efficacy and the patient’s tolerance, a dose of Viagra can be increased to 75mg or 100mg per day. If necessary, a dose of Viagra can be reduced to 25mg.
Overdosage Of Viagra Medicine
Clinical studies have demonstrated that a single dose up to 800mg of Viagra may cause severe adverse reactions. There is no specific antidote in case of overdoses. The difficulty of the treatment of overdose is that Viagra is not excreted in the urine; therefore, dialysis is ineffective in overdose. In this case, the patients are advised to pass symptomatic treatment.
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To make Viagra act, sexual stimulation is required. Alcohol in excessive amount does not affect Viagra efficacy. However, alcohol in large amount can lower blood pressure and weaken effects of Viagra.
The patients with diabetes and hereditary pigmented retinitis should take caution while applying Viagra. Coadministration of Viagra and other drugs for erectile dysfunction treatment should be avoided. Use of Viagra in elderly does not require dosage adjustments. A single dose of Viagra should not exceed 25mg in the patients with severe renal insufficiency.
The patients with diabetes and hereditary pigmented retinitis should take caution while applying Viagra. Coadministration of Viagra and other drugs for erectile dysfunction treatment should be avoided. Use of Viagra in elderly does not require dosage adjustments. A single dose of Viagra should not exceed 25mg in the patients with severe renal insufficiency.