The P-Shot is one of the more aggressively marketed procedures in men's sexual health, and that creates a problem for the patients I see. They have either been told by an aesthetics clinic that it will solve a problem it cannot solve, or they have been dismissed by a primary care office that did not want to take the conversation seriously. Both responses fail the patient. The honest clinical position on the P-Shot is more useful than either: it is a real procedure with a real, narrow indication, and when it is matched to the right patient alongside the right workup, it produces meaningful improvement. When it is sold as a cure-all to men whose underlying problem is vascular, hormonal, or neurologic, it disappoints — and the patient blames the procedure when the real failure was the workup that was never done.
I want to walk through what the P-Shot actually is, what the evidence does and does not support, who I think benefits, and what I work through with men in the consultation room before the procedure is even on the table.
What the P-Shot actually is
The P-Shot — short for Priapus Shot — is an injection of platelet-rich plasma into the penile tissue. The procedure starts with a venous blood draw, typically 30 to 60 milliliters. The blood is processed in a centrifuge to concentrate the platelets, which carry a payload of growth factors: PDGF, VEGF, TGF-beta, EGF, IGF-1, and others. The concentrated PRP is then injected into specific sites along the corpus cavernosum and the glans after the area is anesthetized with a topical and a local block.
The mechanism that the procedure is targeting is regenerative. Platelet-derived growth factors recruit local stem cells, stimulate angiogenesis (new blood vessel formation), promote nerve growth, and support tissue remodeling. In the penile context, the goal is improvement of the smooth muscle and endothelial health of the cavernosal tissue, which is what supports the rigidity and sustainment of an erection. There is also a component of nerve regeneration that targets the small-fiber sensory innervation responsible for sensation.
It is not a hormone. It is not a vasodilator like sildenafil or tadalafil. It does not produce an erection on demand. It is a tissue-level intervention that, in the right patient, improves the underlying vascular and neural substrate that erections depend on, with the response building over eight to twelve weeks as the regenerative effects take hold.
What the evidence actually shows
The evidence base for PRP in male sexual function is real but limited. Several small randomized controlled trials and a handful of case series have shown meaningful improvement in International Index of Erectile Function (IIEF) scores, particularly in men with mild to moderate organic ED. Effect sizes are modest but consistent. The patients who respond best tend to have early or mild vasculogenic ED — meaning the blood vessel and tissue health is the limiting factor, not testosterone deficiency, not severe vascular disease, and not psychogenic.
What the evidence does not support is the marketing claim that PRP reverses severe ED, treats Peyronie's disease (the tissue-thickening curvature condition) reliably as a single-modality treatment, increases penile size in any meaningful way, or substitutes for hormone optimization or PDE5 inhibitor therapy in patients who need them. There are emerging studies on combination protocols — PRP with shockwave therapy, PRP with hormone optimization, PRP as an adjunct to standard ED care — that show better results than PRP alone, which fits with what I see clinically.
When I am setting expectations for a patient considering the P-Shot, I tell them the realistic outcome target is a measurable but moderate improvement in firmness, sustainment, and sensitivity, layered on top of whatever other interventions their full workup has identified. If the workup reveals that hormones, vascular health, or medications are the dominant problem, those get addressed first or in parallel. The P-Shot is a tool. It is not the whole toolbox.
How I evaluate a man for the P-Shot
When a man comes in asking specifically about the P-Shot, I do not start with the procedure. I start with the workup. There are a short list of treatable contributors to ED that get missed when the patient walks straight into a procedure-focused clinic, and missing them is how patients end up disappointed.
I am specifically looking at five things in the comprehensive workup.
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First, hormones. Total testosterone, free testosterone, SHBG, estradiol, prolactin, and DHEA-S. A meaningful percentage of men presenting for ED have low or low-normal testosterone, and addressing that often produces more improvement than the P-Shot alone would. If I find significant hypogonadism, men's hormone therapy is the foundation and PRP is an optional layer added later if needed.
Second, vascular and metabolic markers. Fasting insulin, HbA1c, lipid panel including ApoB, and hs-CRP. ED is often the earliest sign of vascular disease — the penile arteries are smaller than the coronary arteries and they show endothelial dysfunction first. A man with new-onset ED in his forties or fifties needs his cardiovascular risk evaluated whether or not he ever pursues the procedure. I have spent enough years in cardiac ICU and cath lab work to take that connection seriously; in mid-life men, ED that gets worse over months is sometimes the warning shot before something larger.
Third, medications. SSRIs, beta-blockers, finasteride, certain antihistamines, and PPIs all have well-documented sexual side effects. Sometimes the highest-yield intervention is a medication change in coordination with the prescribing provider.
Fourth, psychogenic component. Performance anxiety, relationship dynamics, and depression contribute meaningfully in many cases. Patients with primarily psychogenic ED are not good P-Shot candidates because the procedure does not address the mechanism.
Fifth, the structural exam. Curvature, palpable plaques (Peyronie's disease), penile sensation, lower-extremity pulses. This is where the physical exam matters and is often skipped at clinics that go straight to procedure.
Once that workup is done, the conversation about whether the P-Shot is the right next step is grounded in real data. Some men get it as a primary intervention. Some get it as an adjunct to hormone optimization or PDE5 inhibitor therapy. Some do not get it at all because their picture suggests a different priority.
What the procedure is like
The injection itself takes about 30 minutes from blood draw to completion. Topical anesthetic is applied for 20 to 30 minutes before the injection, and a small local block is used to ensure the procedure is comfortable. Most men describe the sensation during the injection as pressure rather than sharp pain. There is mild soreness and possible bruising for 24 to 48 hours afterward. Most men return to normal activities the same day; sexual activity is typically restricted for 24 to 48 hours.
I do not promise immediate results. The tissue response builds over eight to twelve weeks. Some men report subtle improvement at the four-week mark; the meaningful read on whether the procedure worked is at twelve weeks, with a follow-up assessment at that point to decide whether a second treatment is warranted. Most protocols include one to three treatments spaced eight to twelve weeks apart, depending on response.
How this fits with the rest of the picture
A patient sitting across from me with new ED rarely has a single-cause problem. The P-Shot is often most useful as one piece of an integrated plan that may include men's hormone therapy for the testosterone component, an ED treatment program that includes appropriate use of PDE5 inhibitors and education on dose and timing, attention to cardiometabolic risk that the workup has identified, and lifestyle interventions that actually move the needle (resistance training, sleep architecture, alcohol pattern, and where indicated weight reduction). The patients who get the best long-term results address the system rather than chasing a single procedure.
For couples in which the partner is also experiencing changes, the O-Shot and the female-side workup come up in the same conversation, because mid-life sexual wellness is often a two-person picture and addressing one side without the other is incomplete.
A practical next step
If you have been weighing whether to do something about ED — and especially if a previous clinic offered you the P-Shot without ever ordering hormone or cardiometabolic labs — the right next step is the workup, not the procedure. Bring any recent labs you have. The private consultation is in a clinical room, the conversation is direct, and we will have the data in hand before any procedure is scheduled. Patients in Columbus and patients driving in from Warner Robins get the same workup and the same protocol, and the Columbus consultation can typically be scheduled within a week if you want to get the labs moving.
Medical disclaimer: This article is for educational purposes only and does not constitute medical advice. Individual clinical decisions should be made in consultation with a qualified healthcare provider following appropriate evaluation. References to specific treatments, dosing, or protocols are informational.
Travis spent 17+ years in high-acuity clinical medicine — emergency, cardiac ICU, and cath lab — before founding Revitalize. He is a Certified Platinum Biote hormone therapy provider, the published author of You're Not Broken — You're Unbalanced, and the founder of the Rebuild Metabolic Health Institute. His clinical writing reflects the same precision he brought to critical care: specific, honest, and built around what actually works.
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