Radical prostatectomy is the treatment that most reliably produces ED, because the nerves responsible for erections run along the surface of the prostate and are disturbed, stretched or cut during its removal. Almost every man has ED immediately after surgery. What happens next — how much function returns, how fast, and what helps — depends on the surgery, the man, and the program that follows. This guide covers the recovery timeline, what penile rehabilitation actually involves, why PDE5 inhibitors behave differently in this situation, and where telehealth fits alongside urology care.
Why Surgery Causes ED
The cavernous nerves carry the signal that starts an erection; they lie in bundles on either side of the prostate. Nerve-sparing surgery preserves them where the cancer allows, but even preserved nerves are traumatized by handling and take months to recover — a process called neuropraxia. During that time, little nitric oxide is released in penile tissue, erections don't occur, and the erectile tissue itself, deprived of the oxygenated blood that regular erections bring, begins to lose smooth muscle and gain scar tissue. That secondary tissue change is what penile rehabilitation tries to prevent. Mechanism detail: How PDE5 Inhibitors Work.
What Predicts Recovery
| Factor | Better recovery | Worse recovery |
|---|---|---|
| Nerve-sparing | Bilateral nerve-sparing | Unilateral or non-nerve-sparing |
| Age | Under 60 | Over 65 |
| Pre-surgery function | Normal erections before | Pre-existing ED |
| Vascular health | No diabetes, hypertension, smoking | Diabetes, vascular disease |
| Surgeon experience | High-volume | Low-volume |
| Early rehabilitation | Started within weeks | Delayed or none |
| Partner and motivation | Engaged, regular attempts | Avoidance |
The Timeline
- 0–3 months: Near-universal ED. Nerves in neuropraxia. Rehabilitation typically starts here.
- 3–12 months: Gradual return in nerve-spared men; partial erections, better response to PDE5 inhibitors. Continence usually returns first.
- 12–24 months: The main recovery window. A majority of bilateral nerve-spared men under 60 have usable erections, often with medication.
- 24–36 months: Further improvement possible. Function at three years is roughly the final result.
The honest summary: with good nerve-sparing and a younger, healthier man, most regain function adequate for intercourse with or without medication. Without nerve-sparing, spontaneous recovery is unlikely and treatments that bypass the nerve signal are needed.
Roman Offers Daily Tadalafil →Ongoing prescription once your urologist has set the planPenile Rehabilitation
The concept is simple: keep blood flowing into the erectile tissue during the months it can't produce erections on its own, so the tissue stays healthy enough to work when the nerves come back. The standard components:
- Daily low-dose tadalafil (typically 5mg), started within weeks of surgery. Its long half-life keeps PDE5 blocked continuously, improving blood flow and, the theory goes, protecting tissue. Some urologists use as-needed dosing instead; the evidence on which is better is mixed.
- Vacuum erection device, used daily without the constriction ring, to draw blood into the tissue mechanically regardless of nerve function.
- Intracavernosal injections (alprostadil) in some programs, producing full erections independent of nerves.
- Regular attempts at sexual activity, because arousal drives whatever nerve signal exists.
The evidence that rehabilitation improves long-term unaided recovery is mixed; several trials show benefit while on treatment and less clear benefit after stopping. But it's widely recommended, it's safe, and it keeps men sexually active during recovery. Discuss the specific program with your urologist.
Why PDE5 Inhibitors Behave Differently Here
After Radiation
Radiotherapy for prostate cancer causes ED differently: gradually, over one to two years, through damage to vessels and tissue rather than acute nerve injury. PDE5 inhibitors generally work better after radiation than immediately after surgery because the nerve signal is largely intact early on. Hormone therapy (androgen deprivation), if used alongside, suppresses libido and function while it lasts.
When to Escalate
If there's no meaningful response to full-dose tablets by 12 months, or if the surgery wasn't nerve-sparing, the urologist's options don't depend on nerves: penile injections work for the large majority, vacuum devices are effective for intercourse, and a penile implant has satisfaction rates above 90% in this population. These aren't failures; they're the treatments designed for exactly this situation. See When to See a Urologist vs Telehealth.
Where Telehealth Fits
Recovery after prostate surgery is urology-led, and the rehabilitation plan and any escalation should stay with your surgeon or urologist. What telehealth can do is supply the ongoing prescription once the plan is set: Roman carries daily tadalafil, as-needed tadalafil and sildenafil, and its evaluation (history, blood pressure reading, video visit) is a reasonable place to maintain the medication side with a clinician who knows the context. Tell the Roman clinician about the surgery, the nerve-sparing status and the urologist's plan; they'll work within it. For fixed packs of as-needed 20mg tadalafil without a subscription, PeterMD is an option, though it doesn't carry daily formats.
Our Verdict — September 2026
Expect ED after prostatectomy, expect recovery to take a year or two, and expect tablets to work poorly at first and better later. Start rehabilitation early with your urologist, usually daily tadalafil plus a vacuum device, keep attempting, and re-trial full-dose medication through the recovery window. If it hasn't come back by the second year, the alternatives are effective and worth using. Telehealth can carry the prescription; the plan belongs with your urologist.
Frequently Asked Questions
Is ED after prostate surgery permanent?
Not usually, but recovery is slow and incomplete for many men. With nerve-sparing surgery, a majority regain some function within two years; without nerve-sparing, recovery is much less likely and other treatments are needed.
How long does it take to recover erections after prostatectomy?
Typically 12–24 months, with continued improvement up to three years. Early return of function is a good sign; no response at 12 months warrants escalation.
What is penile rehabilitation?
A program, usually started soon after surgery, using daily PDE5 inhibitors and often a vacuum device to maintain blood flow and tissue health while nerves recover. The evidence is mixed on long-term outcomes but it's widely used.
Why doesn't sildenafil work right after surgery?
Because it amplifies a nerve signal that's been disrupted. With little nitric oxide being released, there's little for the drug to protect. Response improves as nerves recover.
Does radiation cause ED too?
Yes, typically more gradually, developing over one to two years after treatment as vessels and tissue are affected. PDE5 inhibitors tend to work better after radiation than immediately after surgery.
What if tablets don't work after prostate surgery?
Penile injections work for most men regardless of nerve function, vacuum devices are effective, and a penile implant has very high satisfaction rates. A urologist manages all three.
Can I use telehealth for ED after prostate surgery?
For the ongoing prescription once your urologist has set the plan, yes; Roman carries daily and as-needed tadalafil. The rehabilitation plan and any escalation should stay with the urologist.