The Mechanism behind the Medication "VIAGRA"
Viagra works by basically helping the blood vessels in the penis thereby activating the parasympathetic nervous system and inducing an erection necessary for sexual intercourse. The drug only works if the person taking it has been sexually aroused. Men who do not suffer from erectile dysfunction are advised not to take the medication arbitrarily. Sildenafil is actually available in three preparations namely in 25, 50 and 100 milligram preparations. A doctor needs to do a thorough history and physical examination prior to prescribing the medication. For the drug to work as it should, patients are advised to take it by mouth at least an hour prior to the anticipated sexual encounter in order to give enough time for the medication to do its work. Technically speaking the amount of time that it takes to become active varies however, on average it can occur in as quickly as 20 minutes. The duration of action of sildenafil is one to six hours meaning during this window period when the man gets sexually aroused the penis will react with an erection.
As with all prescription medication there are precautions to take when on sildenafil. It is advised to avoid excessive alcohol intake to not undermine the effects of the drug. Only take the dose as prescribed by the health care professional. Do not take more than what was instructed or there could be serious health consequences.
Based on a clinical study involving four thousand men suffering from erectile dysfunction, when the drug was taken in the proper dose, the side effects were noted to be mild to moderate. Among the reported adverse reactions, facial flushing, headache and dizziness were most prevalent.
Who are the people who cannot take the medication? Those who have developed sensitivity to sildenafil the drug is contraindicated. Sildenafil should not be taken in conjunction with nitrate medications due to the fact that the corresponding effect may result in a severe drop in blood pressure that may lead to the patient’s demise. Patients who have a known heart or liver problem are not advised to take the medication. Moreover, the drug is not indicated to be used with other so-called anti erectile dysfunction medication. Patients who experience a side effect due to Viagra should immediately stop taking the drug and report the incident to their attending physicians for evaluation.
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Basic Info on the Drug Viagra
Viagra is the most successful drug against erectile dysfunction. It is a blue diamond shaped tablet that comes in a variety of preparations. Men who want to purchase the drug to treat their ED will need a prescription from their attending physician.
One of the most popular and globally successful drugs against erectile dysfunction, Viagra has made over a billion dollars in sales ever since its introduction. The active ingredient in the drug is called sildenafil. It was considered the pioneer oral medication for men who suffered from ED. Sildenafil belongs to the class of drugs called phosphodiesterase 5 inhibitors. Physically, the drug looks like a blue diamond tablet. It is important to note that sildenafil is not an aphrodisiac nor is it marketed as a drug that can enhance the male sexual drive. It is also not a cure for erectile dysfunction but rather only stops the symptoms so that men are able to perform the sexual act to the satisfaction of their partners.