Penis enlargement is mostly pseudoscientific BS

While dietary supplements won’t do much for your penis, they do have the potential to cause bodily harm. Between 2007 and 2016, at least 776 supplements were found to be adulterated with unstudied or unsafe ingredients. Almost half of these supplements were meant to enhance sexual performance.

Devices also exist to supposedly elongate one’s penis. The most well-known is the “penis pump.” This actually works… sort of. The concept is fairly simple: You place your flaccid penis in the suction tube, then pump out all the air, creating a vacuum in the chamber, causing blood to fill the erectile tissue inside the low-pressure environment. Finally – like tying off a balloon – you place a constriction ring at the base of the penis.

So yes, the “penis pump” will pump up your penis, granting an erection, but the effects rapidly subside with the removal of the constricting ring.