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Usually, the physician determines what dose you should take Viagra. For most men it is 50-100 mg. At the higher dose of the drug should be taken only on doctor"s advice.
Viagra should be taken about one hour before sexual intercourse. Swallow the tablet whole and drink down some water. Viagra can be taken no more than once a day.
Viagra helps erection only if sexual arousal. In the absence of sexual stimulation, the drug does not cause the appearance of an erection. Effects Viagra starts at different times in different people, but it usually manifests itself during the 30 minutes to one hour. After a heavy meal effect Viagra may begin later. Drinking alcohol can temporarily impair erection. To get the maximum benefit from medication, before taking Viagra is not recommended to use a large amount of alcohol.
If Viagra does not facilitate the erection, or erection not last long enough to complete sexual intercourse, you should consult your doctor.