4hrs

[maximus72]

okay guys iv herd it said that viagra last for up to ten hrs but have read only 4hrs
so want to know which is the case as have had some good erections 10hrs after taking the pill is it me or the drug???

[Misbehaving Pecker]

Its probably the med. The half life of viagra is 3-4 hours which means after 4 hours you still have half the drug in your system. For guys who need the full dose, that won't work, but if you are very responsive to the med, half may be enough. If you don't need it to last that long you might try taking half as much. Less side effects and cheaper.