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Risks and side effects of PeniMaster and PeniMaster PRO

Permanent side effects caused by the application of PeniMaster and PeniMaster PRO are not known.

In case of venous issues or weaknesses of the connective tissue within the penis or other issues as regards to the penis or the urethra, a doctor (e.g. urologist) should be consulted before application. In order to provide for the natural sensation of the body and of pain during the application, the device should not be operated in the following cases for safety purposes:

  • under the influence of alcohol
  • under the influence of narcotics
  • under the influence of sedatives
  • under the influence of sleeping drugs or drugs that lower awareness of pain
  • in case of allergies against latex (PeniMaster PRO)

Please observe the operating instructions of the products presented here.


During application, slight irritations of the skin may occur in the area of the holding belt, but these may be reduced by means of the supplied comfort belts and will subside quickly after application.

In the event of erroneous application (e.g. if the fixation or pulling forces are too high), a mostly bluish discolouration of the glans may occur, frequently in connection with coldness, numbness, or pain, requiring the interruption of the application until the symptoms have subsided.

PeniMaster Operating instructions

PeniMaster PRO

If PeniMaster PRO is used properly, the mechanic principle of operation may result in an increase of the blood flow and, thus, in a slight redness of the glans, at which the latter will abate quickly after having removed the device. On the basis of the high levels of comfort, higher pulling forces than the recommended 200–1200 grams may be transferred to the glans easily. Particularly in case of the aforementioned or if higher pulling forces are applied without sufficient familiarisation, the result may be a temporary slight swelling of the glans and/or a partially whitish colouring, at which the same normally abate significantly after a few minutes already. Pulling forces exceeding the aforementioned may result in the formation of bubbles at the glans that will abate within a period of a few hours after having removed the device. Unnecessarily strong vacuum may result in the foreskin (if applicable) being sucked into the vacuum chamber at least partially and showing a swelling. All side-effects described and caused by improper application are temporary and are noticed well ahead of time by means of itching or burning reactions. Thus, the device should be removed in case of corresponding symptoms and it should only be re-applied properly in accordance with these instructions after the symptoms abated and with lower pulling forces.
PeniMaster PRO Operating instructions