If you have erectile dysfunction (ED) and standard tablets like sildenafil (Viagra) or tadalafil (Cialis) are not enough, you have probably seen Bangkok clinics advertising "regenerative" injections that claim to repair the penis itself. The two most marketed are PRP (platelet-rich plasma) therapy (often called the "P-Shot") and exosome therapy.
This guide compares them honestly for men: how each is supposed to work, what the evidence actually shows, the regulatory reality, realistic Bangkok pricing in THB, who should not have them, and the safety and aftercare details you need before you book.
Important: This article is general medical information, not a diagnosis or a prescription. Major urology guidelines (the American Urological Association) classify both PRP and exosome injections for ED as experimental and recommend them only within a research study. Regenerative ED injections are not a proven cure, and exosome injectables are not approved by the US FDA and face regulatory restrictions in Thailand. Any decision should follow an in-person consultation and a proper ED work-up with a licensed doctor.
Quick summary
PRP concentrates the growth factors in your own blood and injects them into the penis to support tissue repair and blood flow. It is autologous (from you), which keeps the procedural safety profile favourable, but the ED evidence is conflicting and the efficacy is unproven, major guidelines consider it experimental.
Exosomes are tiny cell-derived "messenger" particles grown in a lab (usually from donor/umbilical stem-cell cultures). They are marketed as more potent, but they are experimental, not FDA-approved, and the human ED evidence is weaker still.
Neither reliably "cures" ED. Both are best understood as unproven, non-guideline-endorsed options that may possibly help selected men, ideally alongside a full work-up for the real cause (vascular disease, low testosterone, diabetes, nerve injury, or psychological factors).
Indicative Bangkok pricing: PRP roughly 15,000-30,000 THB per session (a course is usually 3+ sessions); exosome protocols roughly 30,000-70,000+ THB. Confirm exact figures at consultation.
First: ED is a symptom, not a diagnosis
Before comparing injections, understand what they are competing against. ED is usually caused by one or more of:
Vascular disease (reduced blood flow), the most common cause, and an early warning sign of heart disease.
Hormonal issues, especially low testosterone.
Diabetes and nerve damage (neurogenic ED).
Psychological factors (anxiety, depression, relationship stress).
Medication side effects and lifestyle factors (smoking, alcohol, obesity).
This matters because no injection fixes a hormonal or psychological cause, and ED can be the first sign of cardiovascular disease. A responsible clinic will work up these causes first. See our overview of erectile dysfunction treatment and how ED differs from low libido.
What is PRP therapy (the "P-Shot")?
PRP stands for platelet-rich plasma. A small amount of your blood is drawn, spun in a centrifuge to concentrate the platelets, and the resulting plasma is injected into specific areas of the penis under local anaesthetic.
The theory: platelets release growth factors that may stimulate local tissue repair, support small blood vessels, and improve sensitivity. Because the material comes from your own body (autologous), the immune-reaction and contamination risks are low.
What the evidence shows: PRP for ED has been studied only in small trials, and the results genuinely conflict. One double-blind, placebo-controlled randomised trial published in *The Journal of Sexual Medicine* (Poulios et al., 2021) found PRP was safe and well-tolerated and reported an improvement in erectile-function scores versus placebo. However, a more recent randomised, placebo-controlled trial (2024, around 50 men) found PRP was no better than placebo at any timepoint. In other words, the data are early, small, and contradictory, not a clear positive.
Crucially, the American Urological Association (AUA) ED guideline classifies PRP for ED as experimental and states it should be offered to men only within an investigative research protocol (such as a clinical trial), not as routine clinical care. It is honest to describe PRP as having low procedural risk but unproven efficacy, not as proven or "promising."
PRP overlaps with what some clinics market as a P-Shot / PRP for men. It is typically delivered as a course of 3 or more sessions spaced weeks apart, not a single shot.
What is exosome therapy?
Exosomes are extracellular vesicles, microscopic particles that cells release to carry proteins, lipids, and genetic messengers (RNA) between cells. In therapy, they are harvested from cultured stem cells (commonly allogeneic, i.e. donor-derived, often from umbilical-cord tissue), purified, and injected.
The theory: exosomes deliver a concentrated "signalling package" that may reduce inflammation and encourage tissue and blood-vessel repair, without injecting whole living cells.
The reality you must know:
Exosome products are not FDA-approved for any condition. The US FDA has issued repeated public safety warnings that exosome and stem-cell products marketed as regenerative medicine are unapproved, and has linked unapproved products to serious harms including infection, allergic reaction, and tumour formation.
The human evidence for exosomes in ED is very limited, largely laboratory and animal work, with little high-quality human trial data. Like PRP, intracavernosal cell-derived therapy is treated as experimental by the AUA and is not endorsed for routine ED care.
Because exosomes are donor-derived biological products, their characterisation, sourcing, and sterility vary widely between providers. This is precisely where a cautious man should ask hard questions.
In Thailand, cell- and exosome-derived injectables are tightly regulated and largely not approved for routine therapeutic injection outside of authorised research settings. Any clinic offering them should be transparent about source, regulatory status, and consent. We cover the mechanism in more depth in our exosome therapy for ED article.
Where shockwave therapy fits
The third "regenerative" ED option men compare is low-intensity shockwave therapy (Li-ESWT). Unlike PRP and exosomes, it is non-injectable (acoustic waves applied to the penis) and has a larger, more consistent evidence base for improving mild-to-moderate vascular ED, with several controlled trials behind it. The AUA still classifies it as investigational and recommends it within a research setting, but the body of supportive human data is the strongest of the three. For many men with vascular ED, shockwave therapy is a more evidence-supported first step than either injection. We mention it here so the comparison is complete.
Exosome vs PRP: side-by-side comparison
Feature | PRP ("P-Shot") | Exosome therapy |
Source | Your own blood (autologous) | Lab-cultured, usually donor/umbilical stem cells (allogeneic) |
What is injected | Concentrated platelets + growth factors | Purified cell-derived vesicles (proteins, RNA, lipids) |
Proposed mechanism | Local growth-factor stimulation of repair | Cell-to-cell signalling, anti-inflammatory repair |
Regulatory status | Experimental per AUA; research-only; off-label use of an autologous blood product | Experimental; not FDA-approved; restricted in Thailand |
Evidence quality (ED) | Limited and conflicting small trials (one positive RCT, one null RCT) | Very limited; mostly lab/animal data |
Immune/contamination risk | Low (your own blood) | Higher in principle (donor-derived) |
Typical protocol | Course of 3+ sessions | Varies by clinic; often combined or multi-session |
Indicative Bangkok cost | ~15,000-30,000 THB / session | ~30,000-70,000+ THB |
Honest positioning | Experimental; low procedural risk, unproven efficacy | Experimental; unproven and unapproved, proceed with the most caution |
*This table is indicative and educational, not a recommendation. Neither injection is guideline-endorsed for routine ED treatment. Severity, cause of ED, and individual health determine what (if anything) is appropriate.*
Realistic pricing in Bangkok (2026)
Regenerative ED prices in Bangkok vary widely by clinic, protocol, and how many sessions are included. The ranges below reflect typical market figures and are indicative only, confirm exact pricing at your consultation.
Treatment | Indicative price per session (THB) | Approx. USD | Typical course | Notes |
PRP / P-Shot | 15,000-30,000 | ~$420-850 | 3+ sessions | Uses your own blood; price depends on PRP prep system |
Exosome therapy | 30,000-70,000+ | ~$850-2,000+ | Varies | Higher cost; verify source + regulatory status |
PRP + exosome combination | 40,000-90,000+ | ~$1,150-2,500+ | Varies | Marketed as "enhanced"; evidence not established |
Shockwave (Li-ESWT) | 3,000-8,000 / session | ~$85-230 | 6-12 sessions | Non-injectable; stronger evidence base |
Initial consultation + work-up | 1,000-3,500 | ~$30-100 | One-off | May include hormone/blood tests |
Thailand vs US/UK: the same regenerative injections in the US or UK commonly run 2-4x higher (US P-Shot pricing frequently quoted around $1,500-2,500+ per session), which is a large part of why men travel to Bangkok. The saving is real, but it should never override checking that the clinic is licensed and the product is legitimate.
What influences the cost
Number of sessions (a single price rarely reflects the full course).
PRP preparation system (basic kit vs higher-yield double-spin).
Exosome source and dose (donor-derived products and higher concentrations cost more).
Whether consultation, hormone tests, and follow-up are bundled.
Clinic positioning, premium clinics include physician time and aftercare.
Who is NOT a candidate (contraindications)
Regenerative injections are not for everyone. You should generally avoid or delay treatment, or be assessed very carefully, if you have:
Active genital or systemic infection.
Bleeding or clotting disorders, or you take anticoagulants / blood thinners (raises bruising and haematoma risk).
Active or recent cancer, this is especially important for exosome/cell-derived products, given theoretical concerns about stimulating cell growth.
Peyronie's disease or significant penile scarring (needs dedicated assessment).
Uncontrolled diabetes or untreated cardiovascular disease (these may be the real cause of your ED and need treating first).
Unrealistic expectations, if your ED is mainly hormonal or psychological, an injection is the wrong tool.
A consultation exists to catch these. Be honest about your full medical history and medications.
The procedure and recovery, step by step
A typical PRP session looks like this:
Consultation and work-up, history, examination, and where indicated, blood tests (including testosterone) to identify the cause of ED.
Numbing, topical or local anaesthetic is applied to the penis.
Blood draw (PRP only), a small sample is taken and spun in a centrifuge.
Injection, the prepared PRP (or exosome product) is injected into defined areas, usually a few minutes.
Recovery, you rest briefly and can typically go home the same day.
Aftercare and recovery timeline:
First 24-48 hours: mild swelling, bruising, or tenderness is common. Avoid strenuous activity.
Sexual activity: most clinics advise pausing for a short window (commonly ~24-48 hours); follow your doctor's specific guidance.
Results assessment: any benefit is usually judged over several weeks to a few months, often after a full course, not after one session.
Maintenance: effects, if present, are not permanent; repeat or maintenance sessions may be discussed.
Risks and side effects
Risk / side effect | PRP | Exosome |
Injection pain, swelling, bruising | Common, mild | Common, mild |
Bleeding / haematoma | Possible (higher on blood thinners) | Possible |
Infection at injection site | Low | Low-to-higher (donor product) |
Allergic / immune reaction | Very low (your own blood) | Higher in principle (donor-derived) |
No response / no benefit | Possible, benefit not guaranteed | Possible, benefit not guaranteed |
Theoretical concerns (e.g. abnormal cell growth) | Not expected | A reason exosomes are restricted by regulators |
Seek urgent medical care if after any injection you develop: spreading redness, severe or worsening pain, fever, pus or foul-smelling discharge, a rapidly enlarging swelling, or a painful erection lasting more than 4 hours (priapism). These can signal infection, bleeding, or a urological emergency.
An honest summary: for most men, side effects are mild and temporary, but benefit is not guaranteed and the efficacy of neither injection is established. Exosomes carry an additional layer of uncertainty because the products are experimental and unapproved.
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Quantified expectations (what "results" really means)
The evidence is conflicting: one small placebo-controlled PRP trial reported an improvement in standardised erectile-function scores (e.g. the IIEF questionnaire), while a more recent placebo-controlled trial found no difference from placebo. Any benefit, if real, appears small and inconsistent.
Onset is gradual, weeks to a few months, not the same-day effect of a PDE5-inhibitor tablet.
Durability is unproven; any benefit may fade and require maintenance.
For exosomes specifically, there is insufficient high-quality human ED data to quote reliable numbers, which is itself the key finding.
Because major guidelines treat these injections as experimental, if you want a predictable, evidence-based result for mild-to-moderate ED, oral PDE5 inhibitors remain first-line, with shockwave therapy as the more-studied procedural option.
How to choose a safe clinic in Bangkok (and red flags)
Bangkok is a genuine hub for men's health, but the regenerative space attracts marketing hype. Protect yourself:
Green flags:
A licensed physician performs the consultation and procedure (ask for credentials).
The clinic does a real ED work-up and discusses non-injection options honestly.
Transparent written pricing that states the number of sessions.
For exosomes: clear disclosure of product source, regulatory status, sterility, and consent.
Red flags, walk away if you see these:
Claims that an injection will "cure" ED or guarantees results.
No mention that PRP and exosomes are experimental / not guideline-endorsed, or that exosomes are unapproved.
Pressure to buy expensive multi-session packages on the first visit.
No physician involvement, or vague answers about where the exosome product comes from.
Prices that look too good to be true (counterfeit or substandard products are a real risk).
If a clinic will not put the regulatory status of its exosome product in writing, treat that as your answer.
So which should you consider?
For most men, start with a proper diagnosis. If you have low testosterone, our testosterone (TRT) services address the cause directly; if ED is vascular and mild-to-moderate, shockwave therapy has the strongest human evidence among the "regenerative" options (though still classed as investigational).
PRP is the lower-risk *procedural* injection because it uses your own blood, but its efficacy for ED is unproven and guidelines class it as experimental. Choose it only as an informed man who accepts the evidence is conflicting and it is research-grade, not standard care.
Exosome therapy should be approached with the most caution: it is experimental, unapproved, and best reserved for fully informed men who understand the limitations after a candid consultation.
A medical consultation is required. None of these treatments should be started without an in-person assessment, a work-up for the underlying cause of your ED, and a frank discussion of evidence, risks, and cost. Book a confidential consultation at Menscape and our doctors will help you choose the safest, most evidence-based path.
Frequently Asked Questions
Is exosome therapy approved for erectile dysfunction?
No. Exosome products are not approved by the US FDA for any condition, and the FDA has issued repeated public safety warnings about unapproved exosome and stem-cell products. Major urology guidelines (the AUA) classify exosome and cell-derived intracavernosal therapy for ED as experimental. In Thailand, exosome injectables are tightly regulated and largely not approved for routine therapeutic injection outside authorised research. Treat any clinic offering them as experimental and ask for the product's source and regulatory status in writing.
Is PRP or exosome therapy a cure for ED?
Neither is a proven cure, and neither is endorsed for routine ED treatment by major guidelines. PRP has limited and conflicting evidence (one small placebo-controlled trial showed a benefit, a more recent one found none), and exosome evidence for ED is weaker still. The AUA classifies both as experimental and research-only. The most important first step is identifying the underlying cause of your ED (vascular, hormonal, neurological, or psychological).
How much do PRP and exosome therapy cost in Bangkok?
Indicatively, PRP (the P-Shot) runs about 15,000-30,000 THB per session, usually as a course of 3 or more sessions, and exosome protocols run about 30,000-70,000+ THB. Combination packages cost more. These are market estimates only; confirm exact pricing, sessions included, and follow-up at your consultation.
Which is safer, PRP or exosomes?
PRP carries lower procedural risk because it uses your own blood, which minimises immune and contamination concerns. Exosomes are donor-derived biological products that are unapproved, so they carry an additional layer of uncertainty around sourcing, sterility, and theoretical risks. Important caveat: the safety advantage of PRP is real, but the efficacy of neither injection for ED is established, and both are considered experimental by major guidelines.
How many sessions will I need?
PRP for ED is typically delivered as a course of three or more sessions spaced weeks apart, not a single injection. Exosome and combination protocols vary by clinic. Be cautious of any single quoted price that does not specify the full number of sessions.
When will I see results?
Any benefit from regenerative injections is gradual, usually assessed over several weeks to a few months and often only after a full course. The evidence is conflicting, so a meaningful benefit is not guaranteed. This is different from oral ED tablets, which work within hours. Durability is unproven and maintenance sessions may be needed.
What should I avoid after the injection?
Expect mild swelling, bruising, or tenderness for 24-48 hours. Avoid strenuous activity and follow your clinic's guidance on pausing sexual activity (commonly around 24-48 hours). Seek urgent care for spreading redness, severe pain, fever, discharge, or an erection lasting more than four hours.
Who should not have these treatments?
Avoid or carefully assess treatment if you have an active infection, a bleeding/clotting disorder or take blood thinners, active or recent cancer (especially relevant for exosomes), Peyronie's disease, or uncontrolled diabetes or heart disease. A consultation exists to screen for these contraindications.
How does shockwave therapy compare?
Low-intensity shockwave therapy (Li-ESWT) is non-injectable and has a larger, more consistent human evidence base for mild-to-moderate vascular ED than either PRP or exosomes, though the AUA still classifies it as investigational. For many men it is a more evidence-supported option to consider first, and it is usually less expensive per session.
Do I need a medical consultation first?
Yes. ED can be an early sign of cardiovascular disease and is often driven by hormonal or psychological causes that injections do not fix. A proper work-up, including history, examination, and where appropriate hormone tests, should always come before any regenerative procedure.

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