# PRP and Stem Cell Injections for ED: An Evidence Check > Platelet-rich plasma injections and stem cell treatments are sold as regenerative cures for erectile dysfunction. Neither is approved for this use, and the human evidence remains thin. - **Source:** ED Treatment Guides (https://www.edtreatmentguides.com/treatments/prp-therapy) - **Last updated:** 2025-11-18 - **Type:** treatment - **Category:** Emerging & unproven - **Prescription:** Available without a prescription - **Evidence:** Investigational - **Onset:** Claimed over weeks to months - **Duration:** Not established - **Typical US cash cost:** $1,500–$3,000 per injection; packages often sold in multiples - **Best for:** Participants in a registered clinical trial - **Not for:** Anyone who has not tried established treatments; Anyone being sold a package of sessions with guaranteed results - **Common side effects:** Injection-site pain and bruising; Swelling; No demonstrated benefit ## Key points - Platelet-rich plasma involves drawing your blood, concentrating the platelets, and injecting them into the penis. The branded 'P-Shot' name is a trademark, not a distinct medical procedure. - Neither PRP nor stem cell therapy is FDA-approved for erectile dysfunction. - Published human trials are small and short. The few sham-controlled studies have not established a convincing benefit. - The AUA guideline classes these as investigational and advises they be offered only under research protocols. - The FDA has taken enforcement action against clinics marketing unapproved stem cell products. ## What is being offered - **Platelet-rich plasma (PRP)** — Blood is drawn, spun in a centrifuge to concentrate platelets, and the concentrate is injected into the penis. The rationale is that platelets carry growth factors that might promote tissue repair. - **Stem cell therapy** — Cells — usually derived from fat or bone marrow, sometimes from donor tissue — are injected with the aim of regenerating erectile tissue or nerve function. The underlying biology is not absurd. Regenerative approaches are an active and legitimate research field, particularly for ED after nerve-sparing prostate surgery. The problem is the distance between plausible mechanism and demonstrated clinical benefit — and the number of clinics charging thousands of dollars to bridge that gap with confidence they have not earned. ## What the human evidence shows - Most published studies are small, single-arm, and lack a sham control — a serious problem in a condition with a large placebo response. - Sham-controlled PRP trials that do exist have generally not shown a clear, durable advantage over placebo. - Stem cell studies in humans are mostly early-phase safety work with a handful of participants. - There is no standardised preparation. 'PRP' from two clinics can differ several-fold in platelet concentration, so results are not comparable. > **Placebo response is large in ED research** > > Improvement rates of 20–30% on placebo are routine in erectile dysfunction trials. That is precisely why uncontrolled before-and-after testimonials — the main evidence most clinics offer — cannot tell you whether a treatment works. ## Regulatory status and safety The FDA has repeatedly warned clinics marketing unapproved regenerative products, including stem cell treatments promoted for conditions where they have not been shown to be safe or effective. Some enforcement actions have followed reports of serious harm in other body areas. PRP prepared from your own blood in a single procedure occupies a lighter regulatory category, which is part of why it proliferated so quickly. Lighter regulation is not evidence of effectiveness. > **Warning signs** > > Be sceptical of any clinic that guarantees results, sells packages of six or more sessions up front, uses testimonials rather than published data, discourages you from seeing a urologist, or cannot tell you what has been published about the specific protocol they use. ## A more productive path If you are looking at regenerative treatments because standard options have failed, the honest sequence is to make sure the standard options genuinely have failed first. 1. An adequate trial of at least two different [PDE5 inhibitors](https://www.edtreatmentguides.com/treatments/sildenafil), properly dosed, over four to eight attempts each. 2. Investigation of the underlying cause — [cardiovascular](https://www.edtreatmentguides.com/causes/cardiovascular-disease), [metabolic](https://www.edtreatmentguides.com/causes/diabetes), [hormonal](https://www.edtreatmentguides.com/causes/low-testosterone) and [psychological](https://www.edtreatmentguides.com/causes/performance-anxiety). 3. [Injection therapy](https://www.edtreatmentguides.com/treatments/penile-injections), which works for most men in whom tablets do not. 4. A [vacuum device](https://www.edtreatmentguides.com/treatments/vacuum-erection-device), which works independently of nerves and arteries. 5. [Implant surgery](https://www.edtreatmentguides.com/treatments/penile-implants), which has the highest satisfaction rate of any treatment. 6. If you still want a regenerative approach after all that, look for a registered clinical trial rather than a commercial package. ## Frequently asked questions ### Does the P-Shot work? There is no good evidence that it does. The name is a trademark, and the sham-controlled research published so far has not shown a clear benefit over placebo. ### Is PRP for ED FDA-approved? No. PRP is not approved for treating erectile dysfunction. Clinics offering it are doing so outside any approved indication. ### Is it dangerous? Serious harm appears uncommon with PRP. The main costs are financial and the delay in pursuing treatments that are known to work. Unapproved stem cell products carry more significant risk. ### Will this change in future? Possibly. Regenerative therapy for ED is an active research area and better-designed trials are under way. The right response to a promising but unproven treatment is to follow the evidence, not to pay for it early. ## Sources - American Urological Association. [Erectile Dysfunction: AUA Guideline](https://www.auanet.org/guidelines-and-quality/guidelines/erectile-dysfunction-(ed)-guideline) (2018) - U.S. Food and Drug Administration. [Tainted Sexual Enhancement Products](https://www.fda.gov/drugs/medication-health-fraud/tainted-sexual-enhancement-products) - Federal Trade Commission. [Health Products Compliance Guidance](https://www.ftc.gov/business-guidance/resources/health-products-compliance-guidance) - National Library of Medicine. [PubMed — search the primary literature](https://pubmed.ncbi.nlm.nih.gov/) ## Related pages - [Shockwave Therapy for ED: What the Evidence Actually Shows](https://www.edtreatmentguides.com/treatments/shockwave-therapy) - [ED Supplements and 'Male Enhancement': An Evidence Review](https://www.edtreatmentguides.com/treatments/supplements) - [Penile Injections (Alprostadil, Trimix): The Most Reliable Non-Surgical Option](https://www.edtreatmentguides.com/treatments/penile-injections) - [How to Buy ED Medication Safely Online](https://www.edtreatmentguides.com/guides/buying-safely) --- _This page is general health information, not medical advice. It cannot account for your own history, medications or risk factors. Talk to a licensed clinician before starting, stopping or changing any treatment._ _Canonical URL: https://www.edtreatmentguides.com/treatments/prp-therapy — HTML for people, Markdown for agents._