P (Priapus Shot)

What to Avoid Before a P Shot: A Pre-Procedure Checklist

12 August 2026

8 min read

What to Avoid Before a P Shot: A Pre-Procedure Checklist

✅ Medically reviewed | Updated July 2026

You have booked your P Shot consultation, and excitement is building. But here is something most clinics never tell you: what you do in the days before your appointment can shape how well your body responds to treatment. A single glass of wine, the wrong painkiller, or an unreported medication can quietly work against the very biology you are paying to activate. The Priapus Shot relies entirely on your own blood, so anything that thins that blood, dulls your platelets, or stresses your immune system deserves a second thought before you walk through the clinic door. This guide breaks down exactly what to avoid before a P-Shot, why each factor matters, and how to walk into your appointment fully prepared for the best possible outcome.

What Is the P-Shot? A Quick Recap

The P Shot, also called the Priapus Shot, uses your own platelet-rich plasma (PRP) to support blood flow, sensitivity, and tissue repair in the penis. Doctors draw a small blood sample, spin it in a centrifuge, and inject the concentrated plasma into targeted areas.

Because the treatment depends on your own biology, your pre-procedure choices directly influence how well your platelets perform on the day. This is why preparation matters just as much as the injection itself.

Why Pre-Procedure Prep Matters for P-Shot Results

Platelets are living cells, and several everyday habits can interfere with how they clot, concentrate, and release growth factors. Skipping preparation does not usually stop the procedure outright, but it can quietly limit your results.

Good preparation gives your platelets the strongest possible starting point. Clinics that offer priapus shot treatment will always screen your medical history first, but the responsibility for day-to-day habits sits with you in the week beforehand.

How Platelets Respond to Lifestyle Factors

Blood-thinning substances reduce platelet aggregation, which is the clumping action that helps concentrate growth factors during processing. Dehydration thickens blood in the wrong way and can make the draw itself more uncomfortable. Poor sleep and high stress raise cortisol, which can blunt the regenerative signalling that PRP relies on.

Medications and Supplements to Avoid Before Your P-Shot

This is the area patients overlook most often. Several common medications and supplements interfere with platelet function, and stopping them without medical advice is never the right approach.

Blood Thinners and Anticoagulants

Patients taking warfarin or newer oral anticoagulants generally need medical clearance before proceeding with any p shot treatment. Never stop a prescribed blood thinner without speaking to your prescribing doctor first. Always disclose these medications at consultation so the treating physician can plan safely around them.

NSAIDs and Over-the-Counter Painkillers

Ibuprofen, aspirin, and other NSAIDs reduce platelet activity and can lower the quality of the plasma your doctor extracts. Paracetamol is generally considered a safer alternative if you need pain relief in the days before your appointment. Ask your clinic directly if you are unsure about a specific medication.

Certain Supplements

Fish oil, vitamin E, and high-dose garlic supplements all carry mild blood-thinning properties. Pausing these supplements for a short period before treatment can support better platelet concentration. Your clinician will confirm the exact timeframe based on your individual health profile.

Lifestyle Habits to Avoid Before the Priapus Shot

Medication is not the only factor at play. Everyday habits also influence how your body prepares its own healing resources.

Alcohol Consumption

Alcohol thins the blood and can affect platelet function for a short window after drinking. Cutting alcohol out in the day or two before your P-Shot London appointment gives your plasma a cleaner starting point. It also reduces the risk of bruising at the injection site.

Smoking

Smoking narrows blood vessels and limits circulation, which works directly against the angiogenic goal of the treatment. Reducing or avoiding cigarettes before your appointment supports better blood flow to the treated tissue. This habit matters for recovery too, not just preparation.

Poor Hydration and Sleep

Dehydration makes the blood draw itself harder and can affect plasma quality. Aim for a good night’s sleep and adequate water intake in the 24 hours before your visit. These are simple steps, but they genuinely support smoother processing and a more comfortable appointment.

Health Conditions That May Delay Your P-Shot

Certain health situations mean postponing treatment rather than avoiding a single habit. Being upfront about these at consultation protects your safety and your results.

Active infections in the genital area, including sexually transmitted infections, mean treatment cannot proceed until the infection clears. Patients undergoing chemotherapy, radiotherapy, or immunotherapy in the pelvic region are not suitable candidates while that treatment is ongoing. Known allergies to local anaesthetics also need discussion beforehand, since a topical numbing cream is applied as standard.

Disclosing your full medical history honestly is the single most important preparation step you can take. A qualified physician reviews all of this before recommending treatment, and there is no obligation to proceed if the P Shot is not the right fit.

What Happens If You Don’t Prepare Properly?

Skipping these precautions rarely causes serious harm, but it can affect your experience and outcome. Blood thinners increase the likelihood of bruising and swelling at the injection site. Weakened platelets from NSAID use may reduce the concentration of growth factors your doctor can extract.

None of this means the procedure fails outright. It simply means your results may take longer to appear or feel less pronounced than they should. Proper preparation removes this uncertainty from the equation entirely.

A Quick Pre-P-Shot Checklist

Use this simple list in the days leading up to your appointment:

Disclose all medications, including anticoagulants and supplements, at consultation
Avoid NSAIDs such as ibuprofen and aspirin for 48–72 hours beforehand, unless your doctor advises otherwise
Pause fish oil, vitamin E, and garlic supplements if your clinician recommends it
Limit or avoid alcohol for at least 24–48 hours before treatment
Reduce smoking where possible
Stay well hydrated and get a full night’s sleep beforehand
Wear comfortable, loose clothing to your appointment
Arrange your day so you are not rushed immediately afterwards

What to Expect on the Day: Timing, Price, and Location

Once your preparation is complete, the appointment itself moves quickly. At Dr SNA Clinic, the full P Shot procedure runs for around 30 to 45 minutes, covering the consultation, blood draw, PRP processing, and injection. Doctors apply topical numbing cream, or offer a penile nerve block on request, so most patients describe only mild pressure during the injection stage.

Pricing starts from £1,250 for the Standard P Shot, which includes dual-spin PRP processing, the injection itself, and two included follow-up consultations at six and twelve weeks. Patients wanting additional vascular support can choose the Enhanced P-Shot with shockwave therapy, priced from £1,350. Every package includes a consultation with the treating doctor, and 0% finance is available for those who prefer to spread the cost.

The clinic operates from 48 Wimpole Street, Marylebone, London W1G 8SF, with appointments available between 10:00 and 18:00 UK time. This central London location makes it accessible for both local patients and those travelling in from across the UK.

If you would rather see the process before you book, Dr Abbas walks through the full procedure step by step on the Dr SNA Clinic YouTube channel, which is a useful way to understand what happens before you arrive.

Frequently Asked Questions

How many days before treatment should I stop blood thinners?
This depends entirely on the specific medication and your medical history, so always confirm timing with your prescribing doctor and treating clinician together.

Can I exercise before my P-Shot appointment?
Light activity is generally fine, but avoid intense exercise immediately beforehand, as it can temporarily affect blood pressure and circulation.

Do I need someone to drive me home afterwards?
No. Most patients return to normal activities, including driving, straight after leaving the clinic.

Should I eat before my appointment?
Yes, eating a light meal beforehand helps prevent lightheadedness during the blood draw.

Final Thoughts

Preparing properly before a P Shot is not complicated, but it does require honesty and a little forward planning. Avoiding blood thinners, NSAIDs, alcohol, and smoking in the days beforehand gives your platelets the best possible chance to perform. Pair that with an open conversation about your medical history, and you set the stage for a smoother appointment and more consistent results.

If you are ready to take the next step, book your confidential consultation and let a qualified physician guide you through the full picture, from suitability through to aftercare.