Vardenafil and Mycophenolate: Can They Be Taken Together?

Vardenafil and Mycophenolate: Understanding the Interaction

Published: 2 November 2026

If you're taking mycophenolate and considering vardenafil for erectile dysfunction, you'll want to know whether these medicines can be used together safely. The good news is that vardenafil and mycophenolate are not known to have a major direct interaction, but your prescriber will still need to review your full medical history and current medicines before prescribing any ED treatment. This page explains what each medicine does, what checks are made, and how to use vardenafil safely if you're on immunosuppressant therapy.

What Is Vardenafil and How Does It Work?

Vardenafil (also known by the brand name Levitra) is a prescription medicine used to treat erectile dysfunction in adult men [5]. It belongs to a group of medicines called phosphodiesterase type 5 (PDE5) inhibitors, which work by relaxing blood vessels in the penis, allowing increased blood flow when you are sexually aroused [5].

Vardenafil is usually taken about 25 to 60 minutes before sexual activity, and its effect can last for several hours [5]. It is available in 5 mg, 10 mg, and 20 mg tablets, and the usual starting dose is 10 mg [5]. Vardenafil does not cause an erection on its own—sexual stimulation is still needed for it to work [5].

Like all PDE5 inhibitors, vardenafil should never be taken with nitrates (such as GTN spray or isosorbide mononitrate), nicorandil, riociguat, or recreational drugs known as 'poppers', because the combination can cause a dangerous drop in blood pressure [5]. It is also important to tell your prescriber about all other medicines you take, including over-the-counter products and herbal supplements, as some can interact with vardenafil.

What Is Mycophenolate and Why Is It Prescribed?

Mycophenolate (available as mycophenolate mofetil or mycophenolic acid) is an immunosuppressant medicine, which means it reduces the activity of your immune system [12]. It is most commonly prescribed to people who have had an organ transplant, such as a kidney, liver, or heart transplant, to help prevent the body from rejecting the new organ [12].

Mycophenolate is also sometimes used to treat certain autoimmune conditions, where the immune system mistakenly attacks the body's own tissues [12]. Because it suppresses the immune system, people taking mycophenolate need to be monitored regularly by their specialist, and they may be more vulnerable to infections [12].

If you are taking mycophenolate, it is essential that you continue to take it exactly as prescribed by your transplant team or specialist, and that you do not stop or change the dose without their advice [12]. When considering any new medicine—including treatments for erectile dysfunction—your prescriber will need to know that you are on mycophenolate so they can review your overall health and any potential risks.

Does Mycophenolate Cause Erectile Dysfunction?

Erectile dysfunction is relatively common in men who have had organ transplants or who are living with chronic health conditions [1]. While mycophenolate itself is not typically listed as a direct cause of ED, the underlying health issues that require immunosuppression—such as kidney disease, diabetes, or cardiovascular problems—can contribute to erectile difficulties [1][2].

Additionally, some other medicines often taken alongside mycophenolate, such as blood pressure tablets or corticosteroids, may have side effects that affect sexual function [2]. If you are experiencing ED and are on mycophenolate, it is worth discussing this with your GP or specialist, as there are effective treatments available and ED can sometimes be an early warning sign of other health issues [1][2].

Vardenafil and Mycophenolate: Is There an Interaction?

No major direct interaction between vardenafil and mycophenolate is commonly reported in the medical literature or standard drug interaction databases [5][12]. This means that, from a pharmacological standpoint, taking vardenafil while on mycophenolate is not expected to cause a significant problem with how either medicine works or is processed by the body.

However, 'no major interaction' does not mean that vardenafil is automatically suitable for everyone taking mycophenolate. Your prescriber will need to consider your overall health, the reason you are taking mycophenolate (such as a history of transplant or autoimmune disease), and any other medicines you are on, as these factors can affect whether vardenafil is safe and appropriate for you [2][5].

For example, many people on mycophenolate also take other medicines such as blood pressure tablets, corticosteroids, or medicines to prevent infections, and some of these can interact with vardenafil or affect your cardiovascular health [5]. Your prescriber will review your full medication list and medical history during the online consultation to ensure that vardenafil is a safe choice for you.

What Your Prescriber Checks Before Prescribing Vardenafil

When you request vardenafil (or any PDE5 inhibitor) through Cured Pharmacy, a UK-registered prescriber will review your online consultation answers to check that the treatment is safe and suitable for you [2][5]. This is a legal requirement for all prescription-only medicines and is designed to protect your health.

The prescriber will ask about your current medicines, including mycophenolate and any other immunosuppressants, blood pressure tablets, or treatments for heart conditions [5]. They will also check whether you have any conditions that make PDE5 inhibitors unsuitable, such as recent heart attack or stroke, severe heart failure, very low blood pressure, or a history of sudden vision loss (NAION) [5].

If you are taking medicines that can interact with vardenafil—such as potent CYP3A4 inhibitors (for example, ritonavir, ketoconazole, or clarithromycin)—the prescriber may need to adjust the dose or recommend a different ED treatment [5]. Vardenafil is contraindicated (must not be used) with some potent inhibitors, so it is vital that you list every medicine you take, including those prescribed by your transplant team or specialist [5].

Medicines That Must Not Be Taken with Vardenafil

Do not take vardenafil if you are using nitrates (such as GTN spray, isosorbide mononitrate, or isosorbide dinitrate), nicorandil, riociguat, or recreational drugs called 'poppers' (amyl or alkyl nitrites) [5]. Combining vardenafil with any of these can cause a dangerous drop in blood pressure, which can be life-threatening [5].

Do not take vardenafil at the same time as another PDE5 inhibitor (such as sildenafil, tadalafil, or avanafil) [5]. If you are on an alpha-blocker (such as doxazosin or tamsulosin), you should be stable on that medicine and start vardenafil at the lowest dose, as the combination can cause dizziness or fainting [5]. Always declare all your medicines during the consultation.

Practical Advice for Taking Vardenafil with Mycophenolate

If your prescriber approves vardenafil for you, take it exactly as directed—usually about 25 to 60 minutes before you plan to have sex [5]. Swallow the tablet whole with water, and do not take more than one dose in 24 hours [5]. Vardenafil works only when you are sexually aroused, so it will not cause an erection without stimulation [5].

Continue taking mycophenolate exactly as prescribed by your transplant team or specialist, and do not stop or change the dose without their advice [12]. There is no need to separate the timing of vardenafil and mycophenolate, as they do not have a known direct interaction, but if you have any concerns, speak to your pharmacist or prescriber.

Avoid drinking large amounts of alcohol when using vardenafil, as alcohol can make it harder to get an erection and can add to the blood-pressure-lowering effect of the medicine, increasing the risk of dizziness [5]. Grapefruit juice can also raise the level of vardenafil in your blood, so it is best to avoid it [5]. If you experience side effects such as headache, flushing, or indigestion, these are usually mild and temporary, but if they are troublesome or persistent, contact your prescriber or pharmacist for advice.

Other ED Treatment Options at Cured Pharmacy

Vardenafil is one of several effective PDE5 inhibitors available for erectile dysfunction. If vardenafil is not suitable for you, or if you would like to try a different option, Cured Pharmacy offers sildenafil (generic Viagra), tadalafil (generic Cialis), and avanafil (Spedra), all available after an online consultation reviewed by a UK prescriber [3][4][6].

Sildenafil is taken about one hour before sex and works for 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 [4]. Avanafil works quickly, usually within 15 to 30 minutes [6]. Your prescriber will help you choose the most suitable option based on your health, lifestyle, and the medicines you are taking.

All PDE5 inhibitors have similar precautions and contraindications, so if you are on mycophenolate and other medicines, the same careful checks will apply whichever ED treatment you choose [2]. If you have tried PDE5 inhibitors and they have not worked, or if they are not suitable for you, your GP can discuss other options such as vacuum devices, alprostadil (a prescription cream or injection), or referral to a specialist [2][7].

When to See Your GP About Erectile Dysfunction

If you are experiencing erectile dysfunction for the first time, it is important to see your GP for a full assessment [1][2]. ED can be an early warning sign of underlying health problems such as heart disease, diabetes, or high blood pressure, and treating these conditions can sometimes improve erectile function [1][2].

Your GP can also review all your current medicines (including mycophenolate and any others prescribed by your specialist) to check whether any of them might be contributing to ED, and they can refer you to a specialist if needed [2]. Online pharmacies like Cured Pharmacy are a convenient option for ongoing treatment once ED has been assessed, but they are not a substitute for a face-to-face consultation if you have new or unexplained symptoms.

Scientific References

1. NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 2 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 2 November 2026]
3. Joint Formulary Committee. (n.d.). Sildenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/sildenafil/ [accessed 2 November 2026]
4. Joint Formulary Committee. (n.d.). Tadalafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/tadalafil/ [accessed 2 November 2026]
5. Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 2 November 2026]
6. Joint Formulary Committee. (n.d.). Avanafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/avanafil/ [accessed 2 November 2026]
7. Joint Formulary Committee. (n.d.). Alprostadil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/alprostadil/ [accessed 2 November 2026]
8. Electronic Medicines Compendium. (n.d.). Summaries of Product Characteristics and Patient Information Leaflets. https://www.medicines.org.uk/emc/ [accessed 2 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.