Tadalafil Before Surgery: What You Need to Know
Learn when to stop tadalafil, what to tell your anaesthetist, and how to restart safely after your operation.
Takes less than 2 minutes to complete 100% online
ED Treatments We Offer
Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.
Not sure which one? Start a free consultation →
Tadalafil Before Surgery: Guidance for Patients
Published: 15 October 2026
If you are taking tadalafil before surgery, you must inform your surgeon and anaesthetist about your medication during your pre-operative assessment. Tadalafil (Cialis) is a PDE5 inhibitor used for erectile dysfunction, and while it is not always necessary to stop it before surgery, your medical team needs to know because it can interact with certain anaesthetic drugs and affect blood pressure during the procedure [4].
Before Any Surgery
Bring a written list of all your medications, including tadalafil, with doses and frequencies, to your pre-operative appointment. This simple step helps your surgical team plan a safe anaesthetic and avoid dangerous drug interactions.
Why Your Anaesthetist Needs to Know About Tadalafil Before Surgery
Tadalafil works by relaxing blood vessels to improve blood flow, which is why it helps with erectile dysfunction. However, this same mechanism means it can lower blood pressure, and during surgery your anaesthetist carefully manages your blood pressure and circulation [4]. If you are taking tadalafil, even occasionally, your anaesthetist must know so they can plan accordingly and avoid any drugs that might interact dangerously.
The most important interaction is with nitrate medications, which are sometimes used in emergency situations to treat chest pain or heart problems during surgery. Combining tadalafil with nitrates can cause a severe and potentially life-threatening drop in blood pressure [4]. Even if you took tadalafil several days before your operation, it can remain in your system long enough to cause problems if nitrates are needed.
Your anaesthetist will also want to know about tadalafil because it may interact with other blood-pressure-lowering drugs used during anaesthesia. Being open about all your medications, including those for erectile dysfunction, helps your surgical team keep you safe and allows them to adjust their approach if needed [2].
How Long Does Tadalafil Stay in Your System?
Tadalafil has a much longer duration of action than other erectile dysfunction treatments, which is one reason it is popular but also why it matters for surgery. After taking a single dose, tadalafil can remain active in your body for up to 36 hours, and it takes about five days for the drug to be completely eliminated from your system [4]. This extended half-life means that even if you stop taking it a day or two before surgery, it may still be present at levels that could interact with anaesthetic drugs.
If you take tadalafil daily (the 2.5 mg or 5 mg dose), it builds up to a steady level in your bloodstream. In this case, it will take longer—around five to seven days after your last dose—for your body to clear the medication completely [4]. Your surgical team will take this into account when planning your anaesthetic and deciding which drugs are safe to use.
Because of tadalafil's long action, most anaesthetists and surgeons recommend stopping it at least 48 to 72 hours before elective (planned) surgery, though some may advise a longer gap depending on the type of operation and your other medical conditions [12]. Always follow the specific advice given by your surgical team during your pre-operative assessment.
Daily vs On-Demand Tadalafil
If you take tadalafil on-demand (10 mg or 20 mg as needed), you can simply avoid taking a dose in the days leading up to your surgery as advised by your doctor. If you take it daily, you should discuss with your GP or surgeon when to stop—it is usually safe to pause daily tadalafil for a week or two around your operation, and you can restart it once you have recovered and your doctor gives the go-ahead [4].
When to get urgent help
- Chest pain during or after surgery, especially if you have taken tadalafil recently—call 999 immediately and tell paramedics about your medication.
- Sudden severe drop in blood pressure (feeling faint, dizzy, or losing consciousness) after surgery—seek emergency help, as this may indicate a drug interaction.
- Erection lasting more than 4 hours after restarting tadalafil post-surgery—go to A&E immediately, as this is a medical emergency (priapism).
- Sudden loss of vision or hearing after taking tadalafil—stop the medication and seek urgent medical attention the same day.
Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.
Do You Always Need to Stop Tadalafil Before Surgery?
Not every surgical procedure requires you to stop tadalafil, but the decision depends on the type of surgery, the anaesthetic technique, and your overall health. For minor procedures under local anaesthetic where no sedation or blood-pressure-altering drugs are used, it may be safe to continue tadalafil, but you must still declare it [12]. For operations under general anaesthetic or spinal/epidural anaesthesia, or any surgery where there is a risk you might need emergency heart medications, most anaesthetists will ask you to stop tadalafil in advance.
Elective surgery gives you and your medical team time to plan, so your surgeon or anaesthetist will give you clear written instructions about which medications to stop and when. Emergency surgery is more complex: if you have taken tadalafil recently and need urgent surgery, tell the anaesthetist immediately so they can avoid nitrates and adjust their drug choices [4]. The presence of tadalafil in your system does not make surgery impossible, but it does require careful management.
Some surgeries, particularly those involving the heart or blood vessels, carry higher risks if you are taking medications that affect blood pressure. Your surgical team will weigh the risks and benefits and give you personalised advice. Never stop or continue any medication without discussing it with your healthcare team first [2].
What to Tell Your Surgical Team About Tadalafil Before Surgery
During your pre-operative assessment, you will be asked to list all medications, including over-the-counter drugs, herbal supplements, and treatments for erectile dysfunction. Be completely honest: healthcare professionals are not there to judge, and withholding information about tadalafil or any other medicine can put your safety at risk during surgery [1]. Write down the dose you take, how often, and when you last took it, so you have accurate information to share.
If you take tadalafil daily, mention this specifically, as it means the drug is continuously present in your system. If you use it on-demand, let them know when you last took a dose. Also tell your surgical team about any other medications you take, especially nitrates (such as GTN spray for angina), alpha-blockers (for prostate or blood pressure), or any other heart or blood-pressure drugs, as these can interact with tadalafil [4].
Your anaesthetist may ask about side effects you have experienced with tadalafil, such as dizziness, headaches, or flushing, as these can give clues about how your body responds to the medication. If you have any heart conditions, high or low blood pressure, or a history of stroke, make sure your surgical team knows, as these factors influence how tadalafil is managed around surgery [2].
Bringing Your Medication List
A helpful tip is to bring a written list of all your medications, including tadalafil, with doses and frequencies, to your pre-operative appointment. You can also bring the medication boxes or a repeat prescription printout. This ensures nothing is missed and helps your surgical team make safe decisions about your anaesthetic and perioperative care [12].
At a glance
Restarting Tadalafil After Surgery
After your operation, you should not restart tadalafil until your surgeon or GP tells you it is safe to do so. The timing depends on the type of surgery, how well you are recovering, and whether you are taking any new medications (such as painkillers or antibiotics) that might interact with tadalafil [4]. For minor procedures, you may be able to restart within a few days, but after major surgery—especially heart, vascular, or abdominal operations—you may need to wait several weeks.
Some post-operative medications can interact with tadalafil. For example, if you are prescribed nitrates for chest pain after heart surgery, you must not take tadalafil at all while using them, as the combination is dangerous [4]. Alpha-blockers are sometimes started after prostate surgery, and if you take both an alpha-blocker and tadalafil, your doctor will need to adjust doses carefully to avoid dizziness and low blood pressure [3].
If you were taking tadalafil daily before surgery, discuss with your GP whether to restart the daily dose or switch to on-demand use during your recovery. Sexual activity itself may need to be avoided for a period after surgery, depending on the operation, so there may be no immediate need to resume tadalafil. Always follow your surgical team's advice about when it is safe to resume normal activities, including sex, and when to restart your erectile dysfunction medication [2].
Alternatives and Planning Ahead for Surgery While Taking Tadalafil
If you know you have surgery coming up and you currently take tadalafil, plan ahead by discussing it with your GP and your surgical team as early as possible. If you are on daily tadalafil and your surgery is several weeks away, your doctor might suggest switching to an on-demand PDE5 inhibitor with a shorter duration, such as sildenafil (Viagra) or avanafil (Spedra), which clear your system more quickly [3][6]. This can make perioperative management simpler, though it is not always necessary.
For men who use tadalafil for both erectile dysfunction and benign prostatic hyperplasia (BPH, or enlarged prostate), stopping the medication may temporarily worsen urinary symptoms. Discuss this with your GP, as there may be alternative treatments you can use during the break, or your doctor may decide the benefits of continuing tadalafil outweigh the surgical risks in your specific case [4].
If you are anxious about stopping tadalafil or worried about erectile dysfunction returning after surgery, talk to your healthcare team. Many men find that ED improves after successful treatment of underlying conditions, and your GP can review your treatment plan once you have recovered. Remember, your safety during surgery is the priority, and a short break from tadalafil is a small and temporary inconvenience that helps ensure a safe anaesthetic and operation [2].
Online Consultations and Surgical Planning
If you currently obtain tadalafil through an online pharmacy such as Cured Pharmacy, make sure to inform your online prescriber about your upcoming surgery during your next consultation. They can provide advice, adjust your prescription if needed, and ensure your records are up to date. After surgery, you can restart treatment through a new online consultation once your GP or surgeon confirms it is safe to do so.
In summary
- Always tell your surgeon and anaesthetist if you take tadalafil, even occasionally, as it can interact with anaesthetic drugs.
- Tadalafil can stay in your system for up to five days, so most surgical teams advise stopping it 48–72 hours before surgery.
- Never combine tadalafil with nitrate medications, which may be used during or after surgery, as this can cause dangerous low blood pressure.
- You can restart tadalafil after surgery once your doctor confirms it is safe and you are no longer taking interacting medications.
Scientific References
- NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 15 October 2026]
- National Institute for Health and Care Excellence. (n.d.). Erectile dysfunction. Clinical Knowledge Summaries. https://cks.nice.org.uk/topics/erectile-dysfunction/ [accessed 15 October 2026]
- Joint Formulary Committee. (n.d.). Sildenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/sildenafil/ [accessed 15 October 2026]
- Joint Formulary Committee. (n.d.). Tadalafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/tadalafil/ [accessed 15 October 2026]
- Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 15 October 2026]
- Joint Formulary Committee. (n.d.). Avanafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/avanafil/ [accessed 15 October 2026]
- Electronic Medicines Compendium. (n.d.). Summaries of Product Characteristics and Patient Information Leaflets. https://www.medicines.org.uk/emc/ [accessed 15 October 2026]
Information on this page is for educational purposes only and is not medical advice. Prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting or changing any medication.
Trusted by thousands
Real people, real results
“Fabulous service and quick delivery”
“Felt the effects of these after about 5 days. Erections are better and can get aroused and ready easier”
“Excellent value and brilliant customer service”
“I received excellent service and everything went well. The order arrived quickly and in perfect condition. It's working very well! Thank you to the whole team for the great work!”
“Delivery was good, the product lived up to expectations.”
How Our Online Service Works
Choose your treatment
Select from our recommended UK-licensed medications.
Answer quick questions
Select safe UK treatments. Quick answers.
Get it delivered fast
We will deliver direct to you as quickly as tomorrow.
Get Discreet ED Treatment Online
- Reviewed by UK-based prescribers
- Takes under 3 minutes
- Discreet Packaging
Your Questions Answered
Medically reviewed by
Tarun Kumar, Superintendent Pharmacist (GPhC 2233073)