Shockwave therapy for erectile dysfunction (ED) is a non-invasive treatment that uses low-energy sound waves applied to penile tissue to stimulate new blood vessel growth and improve blood flow. It’s designed primarily for men whose ED stems from vascular causes, which accounts for about 40% of ED cases in men over 50. The treatment typically involves 6 to 12 sessions over several weeks, requires no anesthesia, and has minimal side effects.
How Shockwave Therapy Works
The full name of the treatment is low-intensity extracorporeal shockwave therapy, often shortened to Li-ESWT or LiSWT. A handheld device delivers focused sound wave pulses to the penis, creating mild mechanical stress in the tissue. This triggers a chain of biological responses that address the root vascular causes of ED rather than simply treating symptoms the way a pill does.
The sound waves stimulate five main processes in penile tissue: improved blood circulation through the growth of new small blood vessels, recruitment and activation of the body’s own stem cells, reduction of scar-like tissue (fibrosis) that restricts blood flow, regulation of inflammation, and nerve repair. The net result is that erectile tissue becomes healthier and more responsive over time, with a better ratio of smooth muscle to collagen. This is why some proponents describe it as a potentially restorative treatment rather than a temporary fix.
What a Treatment Course Looks Like
There’s no single universal protocol, but research has converged on general patterns based on ED severity. During each session, roughly 5,000 sound wave impulses are delivered to different areas of the penis: 2,000 to the main shaft, 2,000 to the base structures (crura), and 1,000 to the penile base. Sessions are painless for most men, though some report mild discomfort.
For mild ED, a common protocol involves 6 sessions delivered twice per week over three weeks, sometimes paired with a daily low-dose oral medication. Moderate ED typically calls for 12 sessions, twice weekly for six weeks. Severe ED protocols may compress 12 sessions into four weeks at three sessions per week, usually combined with medication. Each session lasts roughly 15 to 20 minutes, and you can return to normal activities immediately afterward.
How Well It Works
A 2025 meta-analysis of 12 randomized controlled trials involving 882 men with vascular ED found that shockwave therapy produced statistically significant improvements in erectile function scores compared to sham (placebo) treatment. The improvement was meaningful across subgroups, including men who still responded to oral ED medications and those who didn’t.
In a head-to-head comparison study, shockwave therapy performed similarly to sildenafil (Viagra) at the three-month mark. Erectile function scores were nearly identical: 21.52 in the shockwave group versus 21.26 in the sildenafil group. About 52% of men in the shockwave group and 59% in the sildenafil group met the threshold for clinically meaningful improvement, a difference that was not statistically significant. The key distinction is that sildenafil needs to be taken before each sexual encounter, while shockwave therapy aims to produce lasting structural changes in penile tissue.
How Long Results Last
Multiple studies have tracked men for 6 to 12 months after treatment and found that erectile function improvements generally persist. One randomized trial using a standardized protocol showed benefits at 2 and 3 months that were still present at 12 months. Several other studies confirmed sustained improvement in erectile function scores at the 6-to-12-month mark, with combination therapies (shockwave plus medication) tending to produce better long-term outcomes than shockwave alone.
That said, the durability of results varies. Younger, healthier men tend to maintain benefits longer, while older men and those with vascular conditions like heart disease, high cholesterol, or hypertension may see effects fade sooner. Whether periodic maintenance sessions can extend results is still being studied.
Who Benefits Most
Shockwave therapy works best for men whose ED is caused by poor blood flow to the penis, known as vasculogenic ED. Several factors predict how well someone will respond.
- Age: Younger men respond significantly better. Men over 65, particularly those with vascular conditions, tend to see shorter-lasting benefits.
- Duration of ED: The longer you’ve had ED, the less likely you are to respond. Non-responders in one study had ED for an average of 3.5 years longer than those who improved.
- Response to oral medications: Men who still get some benefit from pills like sildenafil or tadalafil are more likely to respond to shockwave therapy, and their results tend to last longer.
- Vascular health: Men with no cardiovascular conditions had a 93.7% success rate in one study, compared to 76.2% for those with at least one vascular condition.
- Smoking: Non-smokers and light smokers do dramatically better. Men with a low smoking history had a 91% improvement rate versus 50% for heavier smokers.
Men whose ED is primarily psychological in origin are not considered good candidates. For ED caused by nerve damage (such as after prostate surgery), some early research suggests shockwave therapy may help with nerve regeneration, but the evidence is still limited.
Side Effects
Shockwave therapy is considered very safe. The most commonly reported side effects are minor and temporary: mild bruising of penile skin, small blood collections under the skin (hematoma), slight pain during erections, and in rare cases, minor blood in the urine. These side effects resolve on their own. In the head-to-head comparison with sildenafil, the shockwave group actually had fewer side effects overall. Sildenafil caused flushing, headaches, and digestive issues at higher rates.
Regulatory Status and Insurance
This is where things get complicated. No shockwave device is currently FDA-approved specifically for treating ED. Devices like the Duolith by Storz are FDA-cleared for musculoskeletal conditions like plantar fasciitis and are used off-label for ED. The European Society of Sexual Medicine has described the therapy as safe and well-tolerated but noted that its efficacy “deserves more investigation.”
Because the treatment is considered investigational for ED, major insurers don’t cover it. UnitedHealthcare’s medical policy, for example, explicitly classifies shockwave therapy for ED as investigational based on insufficient quality evidence. This means you’ll pay entirely out of pocket. Costs vary widely by provider and location, but a full course of 6 to 12 sessions typically runs between $3,000 and $6,000 at most clinics in the United States.
Shockwave Therapy vs. Oral Medications
The appeal of shockwave therapy is fundamentally different from taking a pill. Oral ED medications work by temporarily increasing blood flow during arousal, meaning you need to take one every time. They also come with recurring costs and potential side effects like headaches, flushing, and nasal congestion. Shockwave therapy aims to restore the underlying blood vessel health so that natural erections improve without ongoing medication.
In practice, the two approaches aren’t necessarily competitors. Many of the best outcomes in clinical studies came from combining shockwave therapy with low-dose daily medication. For men who respond partially to pills but want better results, or for those hoping to reduce their dependence on medication, shockwave therapy offers a complementary path. For men who can’t tolerate oral medications or don’t respond to them at all, it represents one of the few non-surgical alternatives, though response rates are lower in this group.