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Viagra is usually taken as necessary, commonly about an hour ahead of sex. You normally takes Viagra daily, but as the medication only stays with your method for 4 to six several hours, it will not be helpful all day.an erection that won't disappear (priapism). When you have an erection that lasts more than 4 several hours, get clinical aid at once

Contact your medical doctor or search for unexpected emergency medical consideration if your erection is unpleasant or lasts extended than four hours. A prolonged erection (priapism) can injury the penis.Should you be preparing pregnancy, develop into pregnant, or think you might be pregnant, check with your medical professional about the advantage