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Penile rehabilitation after prostate surgery: what it involves | CION Cancer Clinics
Penile rehabilitation is a planned programme of erection tablets, a vacuum device or injections, started in the months after a radical prostatectomy while the nerves heal. Its purpose is to keep blood flowing into the penis so the tissue stays healthy, and to let you be sexually active in the meantime. The evidence that it speeds nerve recovery is mixed. This page explains what it involves, who it does not suit, and what to ask. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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On this page
- What is penile rehabilitation, and does it work?
- What does a rehabilitation programme usually involve?
- What are the options, and who does each not suit?
- What rehabilitation can do, and what it cannot
- Four things men tell us, and what is actually true
- How do you know it is working, and when should the plan change?
- Common questions about penile rehabilitation
The short answer
What is penile rehabilitation, and does it work?
Penile rehabilitation is a planned programme of tablets, a vacuum device or injections, started in the months after prostatectomy while the erection nerves heal. Its aim is to keep blood flowing into the penis so the tissue stays healthy and stretchy, rather than shrinking and scarring during a long period of no erections.
What it can and cannot promise
The honest position is that the evidence is mixed. Studies agree that regular blood flow protects the tissue of the penis. They do not agree on whether a programme brings natural erections back sooner than simply waiting. What it clearly does is keep your options open and give you a way to be sexually active in the meantime.
Why it is started early
Without erections, including the ones that happen in sleep, the penis gets less oxygen-rich blood. Over months the muscle inside it can be replaced by scar tissue that does not stretch. Once that has happened, even a fully recovered nerve has less to work with.
Who it does not suit
A man who has decided sex is no longer important to him does not need a programme, and should not be pushed into one. A man on nitrate heart medicines cannot use the tablets. A man on hormone therapy may find desire is the bigger problem. Say so, and the plan can be shaped around you.
In practice
What does a rehabilitation programme usually involve?
The conversation before surgery
Ideally this starts before the operation. Your surgeon asks how erections are now, whether you use tablets, and what matters to you and your wife. That sets a realistic starting point.
Starting after the catheter comes out
Nothing begins until the catheter is out and the join between bladder and urethra has healed. Your surgeon says when. Do not start tablets left over from before surgery on your own.
Tablets on a set pattern
Most programmes begin with erection tablets taken on a schedule set by your doctor, sometimes daily at a low strength, sometimes before attempts. The dose and timing are the prescriber's decision.
Adding a vacuum device
A clear cylinder and pump draws blood into the penis. Used regularly, without the ring, it is a way of exercising the tissue. With the ring on, it gives an erection firm enough for intercourse.
Review and step up
You are seen every few months. If tablets and the device are not enough, injections or urethral pellets are discussed. If nothing works after a fair trial, an implant is raised.
Not sure whether this applies to you?
Ask an oncologistThe tools
What are the options, and who does each not suit?
None of these is better than the others for everyone. Each has a group it does not suit, and that is the first question.
Erection tablets
Sildenafil, tadalafil and similar tablets boost a nerve signal that is already arriving. Early after surgery that signal is weak, so they often seem to fail at first.
Not suitable if
- You take nitrates for chest pain
- You have certain eye or liver conditions
Vacuum device
Works without any nerve signal. Takes practice, and some couples find it gets in the way. The ring must come off within the time the instructions say.
Not suitable if
- You have a bleeding disorder
- You are on strong blood thinners without advice
Injections and pellets
A medicine injected into the side of the penis, or a small pellet placed in the urethra, opens the blood vessels directly. Reliable, and independent of the nerves.
Not suitable if
- You cannot manage a fine needle
- You have had a prolonged erection before
Penile implant
A device placed inside the penis by a second operation. Gives an erection on demand, permanently. Discussed only after the other options have had a fair chance.
Once an implant is in, the other options no longer work. It is not a first step.Side by side
What rehabilitation can do, and what it cannot
It can
It cannot
Keep the tissue of the penis healthy while the nerves heal
Make a nerve heal faster than it would on its own
Give you a working erection now, with a device or injection
Restore natural erections if the nerves were removed
Reduce the loss of length some men notice
Bring back the fluid at climax; that change is permanent
Keep you and your wife close during recovery
Fix low desire caused by hormone therapy
Tell you within a year or so which options work for you
Tell you in advance how far you will recover
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Commonly believed
Four things men tell us, and what is actually true
"I should wait until I feel like it before starting anything."
Desire and readiness matter, but the tissue does not wait. The point of starting early is to protect the penis during the months when you may feel no desire at all. You can do the programme without having intercourse.
"The tablets are dangerous after cancer surgery."
They are not, for most men. The real danger is combining them with nitrate heart medicines, or taking them from a chemist without your own doctor knowing what else you use. Prescribed and reviewed, they are a routine part of recovery.
"A vacuum pump is something for old men."
It is the one tool that works whatever state the nerves are in, and it is used by men of every age after this operation. The first few tries are awkward. Most men who persist with it find a rhythm within a few weeks.
"If I need injections, the surgery was a failure."
Needing injections says nothing about whether the cancer was removed. It says the nerves are still recovering, or could not be spared. Many men use injections for a year and then need them less. Others keep using them and are content.
Being straight with you
How do you know it is working, and when should the plan change?
You judge it by small changes over months, not by whether last night worked. Morning fullness, a firmer response to a tablet than three months ago, or an erection that lasts a little longer are all signs the nerves are recovering. Keep a rough note of these and bring it to each review.
When to ask for a change
If tablets and the device have had a fair trial and you are getting nothing, say so rather than waiting for the next appointment. Injections or pellets can be added, and they work regardless of the nerves. If low mood or a strained relationship is the bigger problem, say that too. A counsellor is part of the team, not an admission of anything.
What this page cannot tell you
It cannot tell you which option will suit you, what dose you should take, or how far your own erections will recover. Those depend on what was found at surgery, what was spared, your health and your age. This page can only tell you what to ask.
CION does not sell or supply any of the medicines or devices named here. Your prescribing doctor decides what is right for you and where to get it.
!
One thing that cannot wait
An erection that will not go down after an injection, a pellet or a tablet is an emergency. If it has lasted about four hours, or is becoming painful, go to the nearest emergency department and say what you used. Do not wait until morning and do not try a second dose of anything. Left untreated it damages the tissue you are trying to protect.
Questions we are asked
Common questions about penile rehabilitation
When should penile rehabilitation start after prostatectomy?
Usually once the catheter is out and the join inside has healed, which is a matter of weeks rather than months. Your surgeon tells you when. Starting earlier than that risks the healing join, and starting much later means months of no blood flow to the tissue. Ask at your first review if nobody has raised it.
Do I have to have sex for the programme to work?
No. The programme is about blood flow into the penis, and a tablet, a vacuum device without the ring, or an injection does that whether or not you have intercourse. Many men do the early months on their own, and bring their wife into it when they feel ready.
How long do I keep taking the tablets?
That is set by your prescribing doctor and reviewed at each visit. Some programmes run through most of the recovery period, others stop once natural erections return. Do not stop, start or change the pattern yourself, and do not top up with tablets bought elsewhere.
Is the vacuum device painful?
It should not hurt. It feels like pressure and pulling, and the first few tries are clumsy. Pain, bruising or a cold numb feeling usually mean too much pumping or the ring left on too long. Stop, and ask the team to show you the technique again.
Are the injections hard to learn?
Less than most men expect. The needle is very fine and the first dose is given in clinic so the doctor can find the right amount and watch what happens. After that you or your wife do it at home. The main rule is never to increase the dose on your own.
Will rehabilitation stop my penis getting shorter?
It may reduce it. Some loss of length after prostatectomy comes from the tissue shrinking during months without erections, and regular blood flow works against that. It cannot undo the small change that comes from the operation itself, and it cannot promise no change at all.
Can I do this if I am on hormone therapy as well?
You can, but be realistic. Hormone therapy lowers testosterone and with it desire, so the tablets have less to work with and the effort can feel pointless. A device or injections still work. Ask how long the hormone therapy will last and plan around that.
Does CION provide the tablets and devices?
No. CION does not supply any medicine or device named here. Your surgical oncologist or a urologist prescribes what suits you, and you buy it from a chemist or supplier. What CION does is review your progress and adjust the plan at each follow-up visit.
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Sources
- NHS — Prostate cancer: treatment
- Cancer Research UK — Surgery for prostate cancer
- National Cancer Institute — Sexual health issues in men with cancer
- NHS — Erection problems (erectile dysfunction)
- Macmillan Cancer Support — Prostate cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
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Erectile Dysfunction After ProstatectomyWhy erections stop and what decides whether they returnPenile Shortening After ProstatectomyThe change rehabilitation is partly meant to limitDry Orgasm and Changed SensationWhat rehabilitation cannot changeTalking to Your Wife About Life After ProstatectomyDoing this as a coupleFollow-Up Schedule After ProstatectomyWhere the reviews fit into your visits
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