The Priapus Shot® procedure indicates a specific protocol for treating the penis with blood-derived growth factors: specifically platelet-rich plasma or PRP. The name Priapus Shot® is registered with the US Patent & Trademark office as a “service mark” to protect patients by indicating a specific protocol. The name is not a synonym for the injection of blood in to the penis—such a definition would not be specific enough to warrant protection as intellectual property and so would not indicate any particular quality of care.

The trademark gives a method of teaching a specific protocol that providers agree to follow and develop; this agreement offers a measure of quality control and is being followed and developed by around 500 urologists and interventional radiologists, family practitioners, and internists in multiple countries and by faculty in several medical schools where further studies are being done.

The Priapus Shot® procedure defines a protocol that involves patient selection, patient evaluation & education (including explanation of consent), preparation of the PRP, local anesthesia, PRP injection, post injection use of a penis pump on a daily basis, and (in some men) a daily dose of Tadalafil. Other post-injection steps can include: stopping smoking, CoQ10 (12), vitamin E (13), Trimix, and aerobic exercise. Protocol steps vary depending on the problems presented by the patient.