ESWT vs Tablets vs P-Shot: Which Erectile Dysfunction Treatment Fits You?
Men looking into erectile dysfunction treatment quickly meet three names: tablets such as sildenafil and tadalafil, shockwave therapy (Li-ESWT) and the P-Shot (PRP). They are often marketed as alternatives, yet they work in completely different ways, on different timescales and with very different levels of evidence. This article compares them side by side, explains when combining makes sense, and is clear about what none of them can do. The right choice depends on the cause of your ED — which is why assessment comes first.
Key takeaways
- PDE5 tablets are the established first-line treatment and work on the day they are taken.
- Li-ESWT is a course of 6–12 sessions; results build over 4–12 weeks; it is an EAU-listed option for mild vasculogenic ED.
- The P-Shot is still regarded as investigational for ED.
- The options can be combined, and none of them changes size.
The three options at a glance
The table summarises the essentials. Details and caveats follow below.
| PDE5 tablets | Li-ESWT | P-Shot (PRP) | |
|---|---|---|---|
| How it works | Strengthens the natural erectile response while the medicine is active | Low-energy acoustic pulses stimulate new small blood vessels | Platelet concentrate from your own blood injected into the penis |
| How often | On demand or daily, as prescribed | Typically 6–12 sessions, 1–2 per week | Usually 1–3 sessions about 4 weeks apart |
| Onset | Same day | Gradual, usually 4–12 weeks; peak ≈ 3 months after the course | Gradual; not well defined |
| Evidence | Established first-line treatment | Randomised trials; EAU option for mild vasculogenic ED | Early studies and small trials; investigational |
| Side effects | Headache, flushing, nasal congestion, indigestion; never with nitrates | Minimal: temporary redness, mild discomfort; rarely tiny skin bleeds | Soreness or bruising for 1–3 days |
| Best for | Most men with ED, as a starting point | Mild to moderate vasculogenic ED; tablet users wanting less dependence | Men who accept experimental status, often alongside ESWT |
PDE5 tablets: the established first line
Sildenafil, tadalafil and related medicines enhance the body's own erectile response to sexual stimulation. They do not cause an erection on their own, and they help only while the medicine is active. Depending on the medicine and your doctor's advice, they are taken on demand before sexual activity or as a low daily dose.
They are effective for many men and well studied. Common side effects include headache, flushing, nasal congestion and indigestion. The key safety rule: never combine them with nitrate medicines, used for some heart conditions, because together they can cause a dangerous drop in blood pressure. Tablets should be prescribed after a medical review, not bought from unverified online sellers.
Li-ESWT: working on the blood supply
Low-intensity shockwave therapy delivers low-energy acoustic pulses to the shaft and base of the penis. The controlled micro-stress stimulates growth factors and the formation of new small vessels, aiming to improve blood inflow over time. A course is typically 6–12 sessions of about 15–20 minutes, one or two per week, without anaesthesia or downtime.
Results build gradually and are usually noticed 4–12 weeks after starting, peaking about three months after the final session. The European Association of Urology lists Li-ESWT as an option for mild vasculogenic ED. Protocols are not fully standardised, not every man responds, and it is not a cure. Read more on our shockwave therapy page.
P-Shot (PRP): promising, but investigational
For the P-Shot, a small blood sample is spun in a centrifuge to concentrate the platelets, and the resulting plasma is injected into the shaft and glans after numbing. The aim is to support tissue quality and erectile function.
Early studies and a few small randomised trials suggest benefit in mild to moderate ED, but international urology guidelines still regard PRP for ED as investigational. That does not mean it never helps; it means the evidence is not yet strong enough to recommend it routinely. Anyone offering it should say so plainly.
Can the treatments be combined?
Yes, and many men do. You can continue tablets during a course of Li-ESWT; some men find afterwards that they need tablets less often, and some partial responders find tablets work better. The P-Shot is often added to Li-ESWT with the aim of supporting tissue alongside vessel growth, accepting its investigational status.
Any change to prescribed medication should be decided with the doctor who prescribes it. And lifestyle — stopping smoking, exercise, weight, blood sugar and blood pressure control — multiplies the effect of every option, as explained in ED as an early warning sign.
Who should choose what?
- Most men starting out: a medical assessment, then tablets as the first-line option if suitable.
- Mild to moderate vasculogenic ED, wanting less dependence on tablets: Li-ESWT is worth discussing.
- Partial response to tablets: Li-ESWT may improve the response in some men.
- Severe ED, ED after radical prostatectomy, purely psychogenic ED, or low testosterone: shockwave therapy is less suitable; the cause or other treatments come first.
- Interested in PRP: reasonable as an add-on if you understand and accept that it is investigational.
What none of them do
None of these treatments makes the penis longer or thicker. Any fullness after a P-Shot is temporary swelling. If size is your concern, that is a separate question with separate methods — see penis enlargement myths and facts. And none of them treats the underlying cardiovascular or metabolic causes of ED, which is why we always assess first. More practical answers are in our ESWT FAQ.
Frequently Asked Questions
Is shockwave therapy better than Viagra?
They do different jobs. Tablets such as sildenafil work on the day they are taken and are the established first-line treatment. Li-ESWT is a course of sessions that aims to improve blood supply over weeks and suits mild to moderate vasculogenic ED best. Many men use both; the right choice depends on the cause of ED.
How quickly does each ED treatment work?
PDE5 tablets work on the same day. Li-ESWT results usually appear 4–12 weeks after starting and peak about three months after the last session. The onset of any effect from the P-Shot is gradual and not well defined, reflecting its investigational status.
Can I keep taking tablets during shockwave therapy?
Yes. Tablets and Li-ESWT do not interfere with each other, and you can continue them during the course. Some men find afterwards that they need tablets less often. Any change to prescribed medication should be decided with the doctor who prescribes it.
Is the P-Shot proven to work for erectile dysfunction?
Not yet. Early studies and a few small randomised trials suggest possible benefit in mild to moderate ED, but international urology guidelines still regard PRP for ED as investigational. It is sometimes combined with Li-ESWT for men who understand and accept this status.
Who should not take ED tablets?
PDE5 tablets must never be combined with nitrate medicines, used for some heart conditions, because of the risk of a dangerous fall in blood pressure. Men with heart disease or other significant conditions should have a medical review first. Tablets should only be obtained on prescription.
Do ESWT, tablets or the P-Shot increase penis size?
No. All three are aimed at erectile function, not size. Any fullness after a P-Shot is temporary swelling that settles within days. Length and girth are changed only by specific procedures such as ligament release, fat transfer or hyaluronic acid filler.
This comparison is general information and does not replace individual medical advice. Medicines for erectile dysfunction should only be taken on prescription and after a medical review.
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