Do Penis Pumps Work? The Difference Between ED VED Treatment and Enlargement

Search for whether penis pumps work and you will find ED treatment and enlargement claims mixed together.

They need to be separated.

People may search for the same topic as “vacuum pump,” “pumping,” or penis-pump enlargement claims. Those search terms do not change the distinction between temporary erection support and permanent enlargement.

A device that uses negative pressure to draw blood into the penis is used medically as a Vacuum Erection Device, or VED, for ED. There is not enough evidence that using a similar device permanently enlarges the penis.

ED-treatment VEDs are used in practice

The EAU ED guideline lists VEDs as a non-invasive option for men who want an ED treatment without medication.

In the studies summarized by the guideline, the proportion achieving an erection sufficient for intercourse reached about 90% in some studies. Satisfaction ranged from 27% to 94%, and 50% to 64% were still using the device at two years.

In other words, it is not a magic device that makes everyone satisfied unconditionally, despite some online advertising.

It can be an option for someone who cannot or does not want to use medication, while comfort or side effects mean that some people do not continue.

Enlargement is a different question

An ED-treatment VED temporarily draws blood into the penis with negative pressure.

The penis may look larger during or immediately after use. That does not mean long-term penile size has increased.

In a study of 27 men with a short penis who used a VED for six months, the EAU penile-size guideline found no significant increase in flaccid or stretched length.

The same guideline describes the data for lengthening with VED as limited.

Treating “helps an erection” and “permanently increases size” as the same claim does not match the research.

The 2026 ICSM recommendations also caution about commercial devices

The 2026 International Consultation on Sexual Medicine recommendations describe medical research on VEDs, including rehabilitation after prostate surgery, while noting that many devices sold on the market have not undergone rigorous scientific evaluation.

A medical device used in research and a device sold online for “enlargement” should not automatically be treated as the same.

Performance and safety can differ by device, so BananaUp does not promote a particular penis pump or register one as an enlargement Routine.

Pain, bruising, and numbness can occur

VEDs can have side effects.

The EAU guideline reports pain, difficulty ejaculating, petechiae, bruising, and numbness. People taking blood thinners or with bleeding disorders may not be able to use one safely.

With a medical VED, “increase the pressure or constriction to increase the effect” is not the principle.

Using it as “suck harder and it will become larger” is outside the ED-treatment evidence.

Stop using a device and seek medical advice for severe pain, swelling, extensive bruising, numbness, or skin discoloration.

BananaUp does not make VED a Routine

BananaUp’s Routines focus on daily actions such as walking, pelvic-floor work, sleep, and recovery that are straightforward to record.

Because a VED is a medical device used for ED treatment, it is not handled as the same self-care Routine as pelvic_floor_basic or brisk_walk_20.

If ED continues and you are looking for a non-medication option, discuss it with a urologist before trying an enlargement device on your own.

The Male Condition Check can organize firmness, ease of maintenance, sleep, stress, and exercise together.