Aesthetic Clinic

Does the P Shot Increase Erect Size? What the Research Says

12 July 2026

11 min read

PRP vial and centrifuge used for P Shot treatment at Dr SNA Clinic London

✅ Medically reviewed | Updated July 2026

Men search for answers about erect size more than almost any other topic in men’s health, yet most of what circulates online is guesswork dressed up as fact. The Priapus Shot has become one of the most talked-about non-surgical options for men who want firmer erections and a fuller appearance, but does it actually increase erect size, or does it simply improve function and leave the rest to imagination? This article separates the marketing noise from the clinical reality. We’ll walk through what the P Shot actually does, what current research supports, what it doesn’t support, and what real patients typically notice after treatment. If you’re considering the P Shot in London and want a straight answer instead of a sales pitch, keep reading.

What Is the P Shot?

The P Shot, short for Priapus Shot, is a non-surgical injection treatment that uses platelet-rich plasma, or PRP, drawn from your own blood. Doctors process the blood in a centrifuge to separate the platelet-rich portion, then inject it into specific areas of the penis. The treatment aims to stimulate tissue repair, improve blood flow, and support new cell growth.

Doctors originally developed the procedure to treat erectile dysfunction. Over time, clinics began offering it for broader concerns, including firmness, sensitivity, and the appearance of size during an erection. This shift raised an important question: does the science actually back up the size claims, or did the size conversation grow ahead of the evidence?

How the Injection Process Works

A practitioner draws a small blood sample, spins it to isolate the PRP, and numbs the treatment area with a topical anaesthetic. They then inject the plasma into targeted regions of the penile shaft and, in some cases, the glans. The whole process typically takes under an hour, and most men return to normal activity the same day.

Does the P Shot Increase Erect Size? The Honest Answer

Here’s where clarity matters most. The P Shot does not add tissue, length, or girth to the penis in the way that surgery or fillers might. Instead, it works by improving blood vessel function and tissue quality in the existing structure.

Many men do report a firmer, fuller erection after treatment, and some notice their erect size appears larger simply because blood flow and rigidity improve. This is different from permanent physical enlargement. Improved circulation can make an existing erection look and feel more robust, but it doesn’t rebuild anatomy from scratch.

What Small Studies Actually Show

Limited clinical research exists on PRP for sexual health, and most published studies focus on erectile function rather than size specifically. Researchers have observed improvements in erectile rigidity and blood flow in some trial participants, particularly men with mild to moderate erectile dysfunction. No large-scale, peer-reviewed study currently confirms that the P Shot permanently increases erect length or girth.

This doesn’t mean the treatment lacks value. It means the honest conversation is about function and firmness first, with size perception as a secondary, less predictable benefit.

Why Perceived Size Can Improve Without Actual Growth

Erect size depends heavily on blood flow, tissue elasticity, and vascular health. When these factors improve, an erection can feel harder and look fuller at full engorgement, even without any change to baseline anatomy.

Think of it like inflating a tyre to the correct pressure versus buying a bigger tyre. The P Shot works more like optimising pressure and structural quality rather than replacing the tyre altogether. This distinction matters when setting realistic expectations before treatment.

Who Tends to Notice the Biggest Difference

Men with mild erectile dysfunction, reduced sensitivity, or age-related decline in firmness often report the most noticeable change. Men who already have strong erectile function may notice smaller differences, since there’s less room for functional improvement to translate into a visible change.

P Shot Before and After: What Patients Typically Report

Patient-reported outcomes vary, but common themes appear across clinics offering the treatment. Understanding these patterns helps set realistic expectations rather than relying on dramatic before-and-after marketing images.

Firmer erections during arousal
Improved sensitivity in some cases
Reduced erectile dysfunction symptoms
A fuller appearance at full erection, tied to improved blood flow
Gradual results that build over several weeks

Results build gradually rather than appearing overnight, since the plasma needs time to stimulate tissue repair and new blood vessel formation. Most clinics report that visible changes develop over four to six weeks, with continued improvement over subsequent months.

Realistic Timeline for Results

Doctors typically advise patients to expect early changes within two to three weeks, with fuller results developing by the six to eight week mark. Some men choose a second session for enhanced or longer-lasting effects, though this depends entirely on individual goals and response to the first treatment.

Priapus Shot Price and What Influences Cost

Priapus shot price varies between clinics based on practitioner experience, clinic location, and whether the treatment includes a consultation or follow-up review. Rather than quoting a fixed figure here, we’d recommend booking a consultation directly, since pricing depends on your individual assessment and treatment plan. You can find current details on the P Shot treatment page.

Cost shouldn’t be the only factor in your decision. Practitioner training, hygiene standards, and aftercare support matter just as much as price when choosing where to have penile injection treatment.

Questions Worth Asking Before You Book

Before committing to treatment anywhere, ask about the practitioner’s specific training in PRP procedures, how many P Shot treatments they’ve performed, and what aftercare support they provide. A reputable clinic will answer these questions clearly and won’t rush you into booking.

Is the P Shot Safe? What to Know Beforehand

Because the P Shot uses your own blood plasma, the risk of allergic reaction is low compared with synthetic fillers. This autologous approach is one of the main safety advantages doctors highlight when discussing the treatment. Still, no injection is entirely without risk.

Possible side effects include temporary swelling, bruising, mild discomfort at the injection site, and rare instances of infection if aftercare instructions aren’t followed properly. A qualified practitioner will discuss your medical history, current medications, and any contraindications during your consultation before proceeding.

Who Should Avoid the Treatment

Men with active infections, certain blood disorders, or those taking blood-thinning medication may need to avoid or delay treatment. Doctors typically screen for these factors during the initial consultation, which is why a thorough medical history review matters before any injection takes place.

Comparing the P Shot to Other Male Enlargement Injections

Male enlargement injections cover a broad category, from hyaluronic acid fillers to PRP-based treatments like the P Shot. Fillers physically add volume and can create a more immediate girth increase, but they carry different risks, including migration, lumps, and the need for maintenance treatments over time.

The P Shot takes a different approach entirely. Rather than adding foreign material, it works with your body’s own healing response. This makes recovery generally simpler, though the size-related results are more modest and function-focused than filler-based options.

Meet the Doctor Behind Every P Shot: Dr Syed Nadeem Abbas

Not every clinic let’s you say this: the doctor who consults with you is the same doctor who treats you. At Dr SNA Clinic, Dr Syed Nadeem Abbas personally performs every single P Shot, from the blood draw to the final injection. He doesn’t pass the procedure to a nurse or junior colleague — he does it himself, every time.

That level of hands-on involvement comes from years of serious surgical training. Dr Abbas spent over six years working in NHS Trauma and Orthopedics at major hospitals, including Cambridge and Oxford. This isn’t a doctor who picked up injectables as a side interest — he built a surgeon’s understanding of anatomy first, and that foundation shapes how precisely and confidently he approaches regenerative treatments today.

Credentials That Actually Mean Something

Anyone can call themselves a specialist. Dr Abbas backs it up. He holds postgraduate membership of the Royal College of Surgeons of Edinburgh (MRCSEd) and an MSc in Aesthetic Plastic Surgery with Distinction from Queen Mary University of London. On top of that, he holds formal P Shot certification through the American Cellular Medical Association — a credential that puts him among a small handful of UK doctors qualified to this specific standard.

He also uses a dual-spin centrifuge protocol, a technique that extracts a significantly higher concentration of platelets than the standard single-spin method most clinics rely on. More concentrated plasma means more raw material for your body to actually work with, which matters when the entire treatment depends on your own healing response.

Why Patients Trust the Clinic

Dr SNA Clinic operates under full CQC regulation and holds a 4.9-star Google rating built entirely from verified patient reviews — not paid testimonials or cherry-picked feedback. When you’re trusting someone with a procedure this personal, that kind of transparency isn’t optional, it’s essential.

Curious what the treatment actually looks like before you book? The Dr SNA Clinic YouTube channel breaks it down in plain English, no jargon, no scare tactics, just a clear look at what to expect from start to finish.

What Does the P Shot Cost in London?

Let’s talk numbers, because vague pricing helps no one. The Standard P Shot at Dr SNA Clinic costs £1,250, and that figure isn’t just for the injection itself. It covers the full dual-spin PRP process, numbing before treatment, every injection performed personally by Dr Abbas, and follow-up reviews at both six and twelve weeks to track how you’re progressing.

Want to go a step further? The Enhanced P Shot with Shockwave Therapy comes in at £1,350 and includes everything in the standard package, plus low-intensity shockwave therapy layered on top for added benefit.

Before either treatment, you’ll start with an initial consultation priced at £100. Here’s the part patients appreciate most: that £100 isn’t a throwaway fee. It’s fully redeemable against your treatment cost, so you’re not paying twice just to get expert advice.

Where to Find the Clinic

Dr SNA Clinic sits at 48 Wimpole Street, Marylebone, London W1G 8SF, in the heart of one of London’s most established medical districts. The clinic opens Monday to Saturday, 10:00 to 18:00, giving most patients enough flexibility to book around work or other commitments. For enquiries or to book directly, call +44 7955 836986.

Frequently Asked Questions

Does the P Shot permanently increase erect size?
No. It improves blood flow and tissue quality, which can make erections firmer and fuller in appearance, but it doesn’t permanently add length or girth.

How long do P Shot results last?
Results typically last several months to over a year, depending on individual factors. Many men choose periodic follow-up treatments to maintain results.

Is the P Shot painful?
Practitioners apply a topical anaesthetic before injecting, so most men report mild discomfort rather than significant pain.

How soon can I resume sexual activity after treatment?
Most clinics advise waiting a few days, though your practitioner will give you specific aftercare guidance based on your treatment.

Can the P Shot treat erectile dysfunction and improve appearance at the same time?
Yes. Many men seek treatment specifically for erectile dysfunction and notice firmness and appearance improvements as a secondary benefit.

Final Thoughts

The P Shot offers a genuine, research-supported option for improving erectile firmness and function, but it isn’t a size-increase procedure in the way marketing sometimes suggests. Understanding this distinction helps you set realistic expectations and make an informed choice. If you’re exploring the Priapus Shot in London, book a proper consultation, ask direct questions, and choose a practitioner who gives you honest answers rather than exaggerated promises.