Vardenafil and Rivaroxaban: Can They Be Taken Together?

Vardenafil and Rivaroxaban: Understanding the Interaction

Published: 4 November 2026

Many men wonder whether vardenafil and rivaroxaban can be taken together safely. The good news is that vardenafil, a treatment for erectile dysfunction, is not contraindicated with rivaroxaban, an anticoagulant used to prevent blood clots. However, there are important safety considerations your prescriber will assess before treatment begins.

What Is Vardenafil and How Does It Work?

Vardenafil (generic Levitra) is a prescription medicine licensed in the UK for erectile dysfunction [5]. It belongs to a group of medicines called PDE5 inhibitors, which work by relaxing blood vessels in the penis, allowing increased blood flow when you are sexually aroused. Vardenafil is available in 5mg, 10mg, and 20mg tablets and is typically taken about 25 to 60 minutes before sexual activity [5].

The medicine does not cause an erection on its own—sexual stimulation is still needed. Effects can last for several hours, but you should not take vardenafil more than once in a 24-hour period [5]. Like other PDE5 inhibitors, vardenafil can lower blood pressure slightly, which is why certain medicine combinations need careful assessment.

At Cured Pharmacy, vardenafil is available after an online consultation reviewed by a UK-registered prescriber. The consultation ensures the medicine is suitable for you and checks for any interactions with your current medicines.

What Is Rivaroxaban and Why Is It Prescribed?

Rivaroxaban is an anticoagulant (blood thinner) commonly prescribed to prevent blood clots in conditions such as atrial fibrillation, deep vein thrombosis (DVT), or pulmonary embolism. It works by blocking a protein called Factor Xa, which plays a key role in blood clotting. By doing so, rivaroxaban reduces the risk of stroke and other serious clot-related complications.

Because rivaroxaban affects how your blood clots, it carries a risk of bleeding. This is why people taking rivaroxaban are advised to avoid activities that might cause injury and to report any unusual bruising, bleeding gums, blood in urine or stools, or prolonged bleeding from cuts to their doctor.

Rivaroxaban is taken once or twice daily, depending on the dose and condition being treated. It is important to take it exactly as prescribed and not to stop or change the dose without medical advice, as this could increase your risk of a blood clot.

Common Conditions Treated with Rivaroxaban

Rivaroxaban is used to prevent stroke in people with atrial fibrillation (an irregular heartbeat), to treat and prevent DVT and pulmonary embolism, and sometimes after hip or knee replacement surgery to prevent clots. Your GP or specialist will have chosen rivaroxaban based on your individual risk factors and medical history.

Can You Take Vardenafil and Rivaroxaban Together?

Vardenafil and rivaroxaban can generally be taken together, as there is no major pharmacological interaction between the two medicines that would make the combination unsafe. Vardenafil does not significantly affect blood clotting, and rivaroxaban does not interfere with the way vardenafil works to improve erectile function.

However, both medicines can have effects on blood pressure and circulation. Vardenafil can cause a mild drop in blood pressure, and while rivaroxaban does not directly lower blood pressure, any bleeding risk must be considered in the context of your overall health. Your prescriber will review your full medical history, including your cardiovascular health and bleeding risk, before approving vardenafil.

It is essential to declare all your current medicines, including rivaroxaban, during your consultation. The prescriber will check for any individual factors that might affect your suitability for vardenafil, such as recent surgery, bleeding disorders, or other medicines that might add to bleeding or blood pressure effects. Never start, stop, or change the dose of rivaroxaban or vardenafil without medical advice.

How the Interaction Between Vardenafil and Rivaroxaban Is Managed

When you request vardenafil through Cured Pharmacy, the online consultation asks detailed questions about your current medicines, including anticoagulants like rivaroxaban. A UK-registered prescriber reviews your answers to ensure vardenafil is safe for you. They will consider your cardiovascular health, any history of bleeding, and whether you are stable on your rivaroxaban dose.

If you are taking rivaroxaban, your prescriber may start you on a lower dose of vardenafil to minimise any blood pressure effects, or they may advise you to monitor for dizziness or unusual bleeding. You should also inform your anticoagulation clinic or GP that you are using an ED treatment, especially if you experience any new symptoms.

The key is open communication. If you develop any unusual bruising, prolonged bleeding, dizziness, fainting, or chest pain, contact your GP or NHS 111 promptly. These symptoms are not common but should always be checked. Your prescriber at Cured Pharmacy is available to answer questions about your treatment at any time.

What Your Prescriber Checks

Your prescriber will review your cardiovascular history, current blood pressure, any recent bleeding episodes, and all medicines you take. They will also check that sexual activity is safe for you, as this is important for anyone with heart or circulation problems. If you have had a recent heart attack, stroke, or unstable angina, vardenafil may not be suitable [5].

Practical Advice for Taking Vardenafil with Rivaroxaban

If your prescriber approves vardenafil while you are on rivaroxaban, take both medicines exactly as directed. Vardenafil should be taken about 25 to 60 minutes before sexual activity, and you should not exceed one dose in 24 hours [5]. Continue taking rivaroxaban at your usual time each day without interruption.

Avoid heavy alcohol when using vardenafil, as it can worsen erectile dysfunction and add to blood pressure lowering, increasing the risk of dizziness. Grapefruit juice can raise vardenafil levels in your blood and should be avoided. If you experience dizziness or light-headedness after taking vardenafil, sit or lie down until it passes, and avoid driving or operating machinery.

Be vigilant for any signs of unusual bleeding, such as nosebleeds that do not stop, blood in your urine or stools, or severe bruising. While these are not caused by vardenafil, it is important to report them to your doctor if you are on rivaroxaban. If you need to take any new medicines, including over-the-counter painkillers or supplements, check with your pharmacist or GP first.

Other Medicines and Interactions with Vardenafil

Vardenafil must never be taken with nitrates (such as GTN spray, isosorbide mononitrate, or isosorbide dinitrate), nicorandil, riociguat, or recreational drugs known as 'poppers' (amyl or alkyl nitrites). These combinations can cause a dangerous drop in blood pressure [5]. Do not take vardenafil if you are using another PDE5 inhibitor such as sildenafil, tadalafil, or avanafil.

Alpha-blockers (such as doxazosin, tamsulosin, or alfuzosin) used for prostate problems can also lower blood pressure. If you take an alpha-blocker, you must be stable on it before starting vardenafil, and your prescriber will usually recommend the lowest dose of vardenafil [5]. Potent CYP3A4 inhibitors, including some HIV medicines (ritonavir, cobicistat), antifungals (ketoconazole, itraconazole), and antibiotics (clarithromycin), can raise vardenafil levels significantly. Vardenafil is often contraindicated or requires dose adjustment with these medicines [5].

If you take any blood pressure medicines, declare them during your consultation. While they can usually be managed alongside vardenafil, your prescriber needs to assess your overall cardiovascular risk. For any medicine not listed here, do not assume the combination is safe—always disclose it during your consultation so the prescriber can check.

Medicines That Require Extra Caution

CYP3A4 inducers such as rifampicin, carbamazepine, phenytoin, and St John's wort can reduce vardenafil's effectiveness [5]. If you are taking any of these, your prescriber may recommend an alternative ED treatment or adjust your dose. Always bring a full list of your medicines, including herbal supplements, to your consultation.

Scientific References

1. NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 4 November 2026]
2. National Institute for Health and Care Excellence. (n.d.). Erectile dysfunction. Clinical Knowledge Summaries. https://cks.nice.org.uk/topics/erectile-dysfunction/ [accessed 4 November 2026]
3. Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 4 November 2026]
4. Electronic Medicines Compendium. (n.d.). Summaries of Product Characteristics and Patient Information Leaflets. https://www.medicines.org.uk/emc/ [accessed 4 November 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.