Bladder Cancer and Erectile Dysfunction Explained

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Why bladder cancer and erectile dysfunction are linked

Bladder cancer itself rarely causes erectile dysfunction directly, but the treatments used to manage it frequently do [2]. Radical cystectomy—surgery to remove the bladder—often involves removing nearby structures, including the prostate and seminal vesicles in men. This procedure can damage the delicate nerves and blood vessels that run alongside the bladder and are essential for achieving and maintaining an erection [8].

Even nerve-sparing surgical techniques, which aim to preserve these structures, cannot always prevent erectile difficulties. Radiotherapy to the pelvic area can also damage blood vessels and nerves over time, leading to gradual onset of erectile dysfunction months or even years after treatment [2]. Chemotherapy, while less directly linked, can affect overall energy, hormone levels, and psychological wellbeing, all of which play a role in sexual function.

The psychological impact of a bladder cancer diagnosis should not be underestimated. Anxiety, depression, changes in body image (especially if a urostomy is created), and fear of recurrence can all contribute to erectile difficulties [1]. For many men, erectile dysfunction after bladder cancer is multifactorial, involving both physical and emotional elements.

How erectile dysfunction is assessed after bladder cancer

If you are experiencing erectile difficulties following bladder cancer treatment, a thorough assessment is essential to identify the underlying causes and guide treatment [2]. Your GP or specialist will typically start with a detailed medical history, asking about the timing of your symptoms, the type of bladder cancer treatment you received, and any other health conditions such as diabetes, high blood pressure, or heart disease that can also contribute to erectile dysfunction.

A physical examination may be performed to check for signs of nerve damage, circulation problems, or hormonal imbalances. Blood tests are often recommended to measure testosterone levels, blood sugar, cholesterol, and kidney function, as these can all influence erectile health [1]. In some cases, your doctor may refer you to a specialist urologist or sexual health clinic for more detailed investigations, such as Doppler ultrasound to assess blood flow to the penis.

It is important to discuss all medications you are currently taking, as some drugs used to manage bladder cancer symptoms or other conditions can worsen erectile dysfunction. Your healthcare team will also explore psychological factors and may suggest counselling or support groups for cancer survivors, which can be invaluable in addressing the emotional side of sexual difficulties.

When to see your GP

You should see your GP if erectile difficulties persist for more than a few weeks, as early intervention can improve outcomes [1]. Erectile dysfunction can also be an early warning sign of cardiovascular disease or diabetes, so even if you attribute it solely to your cancer treatment, a medical review is important. Your GP can rule out other contributing factors, optimise management of existing conditions, and discuss safe treatment options tailored to your situation.

Lifestyle measures to support erectile function after bladder cancer

While lifestyle changes alone may not fully resolve erectile dysfunction caused by bladder cancer treatment, they can significantly improve overall vascular health, energy levels, and psychological wellbeing, all of which support sexual function [1]. Regular physical activity—such as brisk walking, cycling, or swimming—improves blood flow throughout the body, including to the penis, and can help reduce anxiety and depression.

Maintaining a healthy weight is particularly important, as obesity is linked to lower testosterone levels and poorer erectile function. A balanced diet rich in fruits, vegetables, whole grains, and lean protein supports cardiovascular health and may improve treatment outcomes [2]. Reducing alcohol intake is also beneficial; heavy drinking can worsen erectile difficulties and interact with some ED medications.

Smoking is a major risk factor for erectile dysfunction because it damages blood vessels and reduces blood flow [1]. If you smoke, stopping is one of the most effective steps you can take to improve erectile function and overall health after cancer treatment. Your GP can refer you to NHS stop-smoking services for support. Managing stress through relaxation techniques, mindfulness, or talking therapies can also help, especially if anxiety or low mood are contributing to your symptoms.

What you need to know

• Bladder cancer treatment, especially surgery and radiotherapy, often damages nerves and blood vessels needed for erections.
• PDE5 inhibitors like sildenafil and tadalafil can help many men after bladder cancer, though success varies.
• Always declare your full cancer treatment history and current medicines during any ED consultation.
• Lifestyle changes, psychological support, and alternative treatments are all valuable alongside medication.
• See your GP if erectile difficulties persist, as early assessment improves treatment outcomes.

Oral ED medications: how they can help after bladder cancer and erectile dysfunction

Oral medications known as PDE5 inhibitors are often the first-line treatment for erectile dysfunction following bladder cancer, and many men find them effective even after surgery or radiotherapy [2][8]. These medicines—sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), and avanafil (Spedra)—work by increasing blood flow to the penis in response to sexual stimulation. They do not cause an automatic erection; sexual arousal is still needed.

Sildenafil is usually taken about one hour before sexual activity, with effects lasting around four to six hours [3]. Tadalafil can be taken on-demand (at least 30 minutes before sex, with effects lasting up to 36 hours) or as a lower daily dose, which some men prefer for spontaneity [4]. Vardenafil works similarly to sildenafil, typically within 25 to 60 minutes [5], while avanafil has a faster onset, often within 15 to 30 minutes [6].

Clinical studies have shown that PDE5 inhibitors can be effective after nerve-sparing radical cystectomy, though success rates may be lower than in men without a history of pelvic surgery [8]. Starting treatment early after surgery—sometimes called penile rehabilitation—may help preserve erectile tissue, though this approach should be discussed with your specialist. It is important to give these medications a fair trial; some men need to try a medicine several times, or try different PDE5 inhibitors, before finding the one that works best for them.

Important safety considerations

PDE5 inhibitors are generally safe, but they must never be taken with nitrate medicines (such as GTN spray or isosorbide mononitrate), nicorandil, riociguat, or recreational drugs called 'poppers', as this combination can cause a dangerous drop in blood pressure [3][4][5][6]. If you take alpha-blockers for urinary symptoms (common after bladder cancer treatment), you must be stable on that medication and start on the lowest dose of a PDE5 inhibitor, as the combination can cause dizziness. Always declare all your current medicines during your consultation, and never take more than one PDE5 inhibitor at a time.

Other treatment options for bladder cancer and erectile dysfunction

If oral medications are not effective, not suitable, or not preferred, several other treatments are available [2]. Vacuum erection devices (VEDs) are mechanical pumps that draw blood into the penis, creating an erection that is then maintained with a constriction ring placed at the base. VEDs can be particularly useful after pelvic surgery and do not involve medication, though some men find them less spontaneous.

Alprostadil is a prescription medicine that can be applied as a cream (Vitaros) inserted into the opening of the penis, or injected directly into the side of the penis (Caverject) [7]. These treatments work locally to increase blood flow and can be effective even when nerve damage is present. Injections require training from a healthcare professional, and some men experience mild pain or bruising at the injection site.

Penile implants are a surgical option for men who do not respond to other treatments. Inflatable or semi-rigid rods are placed inside the penis during an operation, allowing an erection on demand. This is usually considered only after other options have been tried, but it can provide a permanent solution with high satisfaction rates [8]. Psychological support, including psychosexual therapy or couples counselling, is valuable alongside any physical treatment, especially when body image, relationship dynamics, or cancer-related anxiety are factors.

When to get urgent help

• Erection lasting more than 4 hours (priapism) – go to A&E immediately
• Sudden loss of vision or hearing after taking ED medication – stop the medicine and seek urgent medical advice
• Chest pain during or after sexual activity – call 999
• Severe dizziness or fainting after taking ED tablets – seek same-day medical review
• Blood in urine or new bladder symptoms after starting ED treatment – contact your GP or specialist urgently

Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.

Getting treatment through Cured Pharmacy

Cured Pharmacy is a GPhC-registered online pharmacy (GPhC 9012511) offering discreet access to prescription ED treatments following a confidential online consultation reviewed by a UK-registered prescriber. If you have been treated for bladder cancer, it is essential that you provide full details of your cancer treatment, current medications, and any other health conditions during your consultation, so the prescriber can assess which treatment is safe and appropriate for you.

All prescription ED medicines are dispensed by qualified pharmacists and delivered in plain, unmarked packaging to your home. You can choose from a range of PDE5 inhibitors, including generic and branded options, at transparent prices. First-time customers can use the code Ednew to receive a discount on their first order. If you have any questions about your treatment or experience side effects, the pharmacy team is available to provide advice and support.

While online treatment is convenient, it is important to maintain regular contact with your GP or specialist, especially in the months and years following bladder cancer treatment. Erectile dysfunction can sometimes signal other health issues, and your doctor can monitor your overall recovery, adjust medications, and refer you for specialist support if needed. Cured Pharmacy works alongside, not instead of, your NHS care.

What to expect from your online consultation

The online consultation will ask detailed questions about your bladder cancer diagnosis and treatment, including the type of surgery or radiotherapy you received and when it took place. You will also be asked about your cardiovascular health, blood pressure, current medications, and any other medical conditions. This information allows the prescriber to check for contraindications and drug interactions, and to recommend the most suitable ED treatment for your individual circumstances. If the prescriber has any concerns, they may ask for further information or suggest you see your GP before starting treatment.