Vardenafil and Paracetamol: Can You Take Them Together?
Learn about the safety of combining these medicines and what checks your prescriber makes.
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Vardenafil and Paracetamol: Understanding the Interaction
Published: 3 November 2026
Many men taking vardenafil for erectile dysfunction wonder whether they can safely take vardenafil and paracetamol together for headaches or other pain. The good news is that no major interaction is commonly reported between these two medicines, and they are generally considered safe to use together. However, every person's situation is different, and your prescriber or pharmacist will check all your current medicines during your consultation to ensure the combination is right for you.
At a glance
What Is Vardenafil and How Does It Work?
Vardenafil is a prescription medicine used to treat erectile dysfunction (ED) in adult men. It is the generic version of the branded medicine Levitra and belongs to a group of medicines called PDE5 inhibitors [5]. Vardenafil works by relaxing the blood vessels in the penis, which allows more blood to flow into the area when you are sexually aroused. This helps you to get and maintain an erection suitable for sexual activity [5].
Vardenafil is available in three strengths: 5mg, 10mg, and 20mg tablets. You typically take it about 25 to 60 minutes before you plan to have sex, and it works only when you are sexually stimulated [5]. The effect can last for several hours, but you should not take more than one dose in a 24-hour period. Vardenafil requires a prescription in the UK, and it is only supplied after an online or face-to-face consultation with a registered prescriber who will check that it is safe and suitable for you.
What Is Paracetamol and When Is It Used?
Paracetamol is one of the most widely used over-the-counter painkillers in the UK. It is used to relieve mild to moderate pain, such as headaches, toothache, muscle aches, period pain, and back pain. Paracetamol also helps to reduce fever. It is available in various forms, including tablets, capsules, soluble tablets, and liquid suspensions, and it can be bought without a prescription from pharmacies and supermarkets.
Paracetamol works by blocking the production of certain chemicals in the brain that cause pain and fever. Unlike non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, paracetamol does not reduce inflammation. The usual adult dose is 500mg to 1000mg (one or two tablets) every four to six hours, with a maximum of 4000mg (eight 500mg tablets) in 24 hours. It is important not to exceed the recommended dose, as too much paracetamol can cause serious liver damage.
Common Uses for Paracetamol
People often take paracetamol for everyday aches and pains, including headaches that can sometimes occur as a side effect of ED medicines. Headache is a known side effect of vardenafil and other PDE5 inhibitors, so some men may reach for paracetamol to manage this discomfort. Paracetamol is generally well tolerated and has fewer interactions with other medicines compared to some other painkillers, which makes it a popular first choice for pain relief.
Can You Take Vardenafil and Paracetamol Together?
No major interaction is commonly reported between vardenafil and paracetamol, and they are generally considered safe to take together. Paracetamol does not affect the way vardenafil works, and vardenafil does not significantly alter the effectiveness or safety of paracetamol. This means that if you develop a headache or other mild pain while taking vardenafil, you can usually take paracetamol to relieve the discomfort without concern.
However, it is important to remember that every person's medical history and current medicines are different. During your consultation for vardenafil, your prescriber or pharmacist will ask about all the medicines you take, including over-the-counter painkillers like paracetamol. This ensures that the combination is safe for you and that there are no other factors that might affect your treatment. You should always follow the dosage instructions for both medicines and never exceed the recommended maximum dose of paracetamol.
Why Headaches Happen with Vardenafil
Headaches are a common side effect of vardenafil and other PDE5 inhibitors [5]. They occur because these medicines relax blood vessels throughout the body, not just in the penis, which can lead to increased blood flow to the head and a mild headache. For most men, the headache is mild and goes away on its own. Taking paracetamol at the recommended dose can help to manage this side effect if it becomes bothersome. If headaches are severe or persistent, speak to your prescriber, as they may be able to adjust your dose or suggest an alternative treatment.
What you need to know
- No major interaction is commonly reported between vardenafil and paracetamol; they are generally safe to take together
- Paracetamol can help relieve headaches caused by vardenafil without affecting how the ED medicine works
- Always declare all medicines, including over-the-counter painkillers, during your vardenafil consultation
- Never exceed 4000mg of paracetamol in 24 hours, even when taking vardenafil
- Seek urgent help if you have an erection lasting over four hours or sudden vision or hearing loss
What Your Prescriber Checks Before Approving Vardenafil
Before prescribing vardenafil, your prescriber will carry out a thorough assessment to make sure it is safe and appropriate for you. They will ask about your medical history, including any heart problems, blood pressure issues, liver or kidney disease, and any previous allergic reactions to medicines. They will also ask about all the medicines you currently take, including prescription medicines, over-the-counter treatments, herbal remedies, and supplements [5].
Certain medicines must never be taken with vardenafil because they can cause a dangerous drop in blood pressure. These include nitrates (such as GTN spray, isosorbide mononitrate, or isosorbide dinitrate), nicorandil, riociguat, and amyl or alkyl nitrites (poppers) [5]. You must also not take vardenafil with another PDE5 inhibitor, such as sildenafil or tadalafil. If you take alpha-blockers for prostate problems or high blood pressure, your prescriber will check that you are stable on the alpha-blocker and may start you on a lower dose of vardenafil to reduce the risk of dizziness or low blood pressure [5].
Vardenafil is broken down in the body by an enzyme system called CYP3A4. Medicines that strongly inhibit this enzyme, such as ritonavir, cobicistat, ketoconazole, itraconazole, and clarithromycin, can increase the levels of vardenafil in your blood and raise the risk of side effects. In these cases, vardenafil may be contraindicated or require a dose adjustment [5]. Your prescriber will review all these factors during your consultation to ensure vardenafil is safe for you.
Practical Advice for Taking Vardenafil and Paracetamol
If you need to take paracetamol while using vardenafil, follow the dosage instructions on the paracetamol packet and do not exceed the maximum daily dose of 4000mg in 24 hours. You can take paracetamol before, during, or after taking vardenafil, as there is no specific timing requirement. If you experience a headache after taking vardenafil, paracetamol can usually help to relieve it within 30 to 60 minutes.
Always tell your prescriber or pharmacist about any over-the-counter medicines you take regularly, including paracetamol, during your consultation. Although paracetamol does not interact with vardenafil, your prescriber needs a complete picture of all your medicines to ensure your overall treatment plan is safe. If you are taking combination products that contain paracetamol along with other ingredients (such as cold and flu remedies), check the label carefully to avoid accidentally taking too much paracetamol.
If you find that you need to take paracetamol frequently because of headaches from vardenafil, speak to your prescriber. They may be able to lower your dose of vardenafil or suggest a different ED treatment that causes fewer side effects for you. Never stop or change your prescribed medicine without advice from a healthcare professional.
Other Painkillers and Vardenafil
If you prefer to use a different painkiller, such as ibuprofen or aspirin, no major interaction is commonly reported with vardenafil. However, these medicines can have their own side effects and interactions, particularly if you have stomach problems, asthma, or take blood-thinning medicines. Always check with your pharmacist or prescriber before using a new painkiller alongside vardenafil to ensure it is safe for your individual circumstances.
When to get urgent help
- Erection lasting more than four hours (priapism) – go to A&E immediately
- Sudden loss of vision in one or both eyes – stop vardenafil and seek urgent medical help
- Sudden decrease or loss of hearing – stop vardenafil and seek urgent medical help
- Chest pain during or after sexual activity – stop and seek medical advice; do not take nitrates if you have used vardenafil in the last 24 hours
- Severe dizziness, fainting, or allergic reaction (swelling, difficulty breathing) – call 999 or go to A&E
Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.
When to Seek Medical Help
Most men tolerate vardenafil well, and side effects are usually mild and short-lived. However, there are some situations where you should seek urgent medical help. If you experience an erection that lasts for more than four hours (priapism), you must go to A&E immediately, as this can cause permanent damage to the penis if not treated promptly [5]. Sudden loss of vision in one or both eyes or sudden decrease or loss of hearing are also medical emergencies, and you should stop taking vardenafil and seek help straight away [5].
If you develop chest pain during or after sexual activity, stop what you are doing and seek medical advice. Do not take nitrate medicines (such as GTN spray) if you have taken vardenafil within the last 24 hours, as this combination can cause a dangerous drop in blood pressure [5]. If you experience severe dizziness, fainting, or an allergic reaction (such as swelling of the face, lips, or throat, or difficulty breathing), call 999 or go to A&E immediately.
For less urgent concerns, such as persistent headaches, flushing, indigestion, or nasal congestion, speak to your prescriber or pharmacist. They can offer advice on managing side effects and may adjust your treatment if needed. Remember that erectile dysfunction can be an early warning sign of underlying health conditions such as heart disease or diabetes, so if you have not already done so, it is a good idea to see your GP for a full health check [1][2].
Managing Headaches from Vardenafil
If you get a headache after taking vardenafil, paracetamol at the usual dose can help. If headaches are frequent or severe, ask your prescriber about adjusting your dose or trying a different ED treatment.
Scientific References
- NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 3 November 2026]
- National Institute for Health and Care Excellence. (n.d.). Erectile dysfunction. Clinical Knowledge Summaries. https://cks.nice.org.uk/topics/erectile-dysfunction/ [accessed 3 November 2026]
- Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 3 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.
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Common Questions
Can I take paracetamol with vardenafil for a headache?
Yes, no major interaction is commonly reported between vardenafil and paracetamol, so you can usually take paracetamol to relieve a headache caused by vardenafil. Follow the dosage instructions on the packet.
Will paracetamol stop vardenafil from working?
No, paracetamol does not affect how vardenafil works. You can take paracetamol before, during, or after taking vardenafil without reducing its effectiveness.
How much paracetamol can I take with vardenafil?
The usual adult dose of paracetamol is 500mg to 1000mg every four to six hours, with a maximum of 4000mg in 24 hours. Do not exceed this limit, even if you are taking vardenafil.
Can I take ibuprofen instead of paracetamol with vardenafil?
No major interaction is commonly reported between vardenafil and ibuprofen, but check with your pharmacist first, especially if you have stomach problems, asthma, or take blood-thinning medicines.
Why do I get headaches when I take vardenafil?
Headaches are a common side effect of vardenafil because it relaxes blood vessels throughout the body, increasing blood flow to the head. Most headaches are mild and can be managed with paracetamol.
What should I do if paracetamol doesn't help my vardenafil headache?
If paracetamol does not relieve your headache or if headaches are severe or frequent, speak to your prescriber. They may adjust your dose or suggest a different ED treatment.
Do I need to tell my prescriber that I take paracetamol?
Yes, always tell your prescriber or pharmacist about all medicines you take, including over-the-counter painkillers like paracetamol, during your consultation for vardenafil.
Can I take cold and flu remedies that contain paracetamol with vardenafil?
Yes, but check the label carefully to avoid taking too much paracetamol in total. Many cold and flu remedies contain paracetamol, so make sure you do not exceed 4000mg in 24 hours.
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Reviewed by UK-based prescribers · Takes under 3 minutes · Discreet Packaging
Medically reviewed by
Tarun Kumar, Superintendent Pharmacist (GPhC 2233073)