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Buy Viagra Online
In the clinical studies of Viagra scientists did not observe differences of the efficiency and safety between aged and young persons. Despite this the concentration of the medication in plasma of the blood is increased on an average by 52% in aged men after the use of Viagra dosage. As a result, doctors recommend to adjust the dose of Viagra in aged men especially if they have serious disorders of the excretion organs.
As a result of the additive effect of Sildenafil and nitrates to metabolism of nitric oxide there is hypotensive action of nitrates. Even the small doses of Viagra may increase the hypotensive action which will lead to severe dizziness and loss of having sexual intercourse, or faint and this may lead to the lethal outcome. Therefore doctors recommend to eliminate the possible combination of Viagra and any remedies containing the active component of Sildenafil with drugs containing nitrates.