Medical penis pumps can provide some temporary gains in penis size. Some are FDA approved and are for use primarily in patients with severe erectile dysfunction that does not respond to other medical therapies. The vacuum pump draws tissue fluid into the penis and is trapped in the penis by a silicone ring placed at the base of the penis. There are also “novelty” penis pumps sold over the counter that can achieve some of the same results. So the short answer is yes, penis pumps do work, for several minutes to perhaps an hour. Patients who pump at high vacuum levels or for too long can develop blistering of the skin. Additionally, while there is some anecdotal evidence that some slight permanent gains can be achieved with pumping, there is no compelling evidence that this is true.
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