Tadalafil and Atenolol: Can You Take Them Together?
Learn how these medicines interact and what safety checks your prescriber will carry out.
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Tadalafil and Atenolol: Understanding the Interaction
Published: 18 October 2026
Many men wonder whether tadalafil and atenolol can be taken together safely. The good news is that tadalafil (the active ingredient in Cialis) can usually be prescribed alongside atenolol, a beta-blocker used to treat high blood pressure and heart conditions, but your prescriber will need to check your blood pressure and overall cardiovascular health first. This page explains how these medicines work, what the interaction means for you, and the safety checks that take place during your consultation.
At a glance
What is tadalafil and atenolol used for?
Tadalafil is a prescription medicine used to treat erectile dysfunction (ED) in men [4]. 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. Tadalafil is available as on-demand tablets (10mg or 20mg, taken at least 30 minutes before sex, with effects lasting up to 36 hours) or as a daily low-dose option (2.5mg or 5mg) [4]. It requires sexual stimulation to work and does not increase desire on its own.
Atenolol is a beta-blocker prescribed to manage high blood pressure (hypertension), angina (chest pain), and certain heart rhythm problems. It works by slowing your heart rate and reducing the force of your heartbeat, which lowers blood pressure and reduces the heart's workload. Many men with high blood pressure or heart conditions also experience erectile dysfunction, so it is common to need treatment for both [1][2].
Because both medicines can affect blood pressure, your prescriber will carefully assess whether tadalafil is suitable for you if you are already taking atenolol. This is a routine part of the online consultation at Cured Pharmacy, where a UK-registered prescriber reviews your medical history and current medicines before approving any prescription.
How do tadalafil and atenolol interact?
Tadalafil and atenolol can both lower blood pressure, so when taken together there is a potential for an additive effect—meaning your blood pressure may drop more than it would with either medicine alone [3][4]. This is not the same as a dangerous contraindication (like the combination of tadalafil with nitrates, which must never be used together), but it does mean extra caution is needed.
In most men whose blood pressure is well controlled on atenolol, tadalafil can be prescribed safely. The key is that your blood pressure should be stable, not too low to begin with, and your heart condition (if you have one) should be managed. Your prescriber will check your recent blood pressure readings, ask about symptoms such as dizziness or fainting, and confirm that sexual activity itself is safe for your heart [2].
The interaction is usually manageable because tadalafil's blood-pressure-lowering effect is generally mild and short-lived. However, you may be more likely to notice side effects such as light-headedness, dizziness, or headache, especially when you first start treatment or if your dose is increased. If you experience these symptoms, sit or lie down until they pass, and let your prescriber know at your next review.
Why beta-blockers and ED medicines need careful assessment
Beta-blockers like atenolol are often prescribed for cardiovascular conditions, and men with heart disease or high blood pressure have a higher risk of erectile dysfunction [10]. Your prescriber needs to balance the benefits of treating ED with the need to keep your heart and blood pressure stable. This is why the consultation will ask detailed questions about your heart health, including any history of heart attack, stroke, angina, or heart failure, and whether you experience chest pain, breathlessness, or dizziness during physical activity or sex [2].
What does your prescriber check before approving tadalafil with atenolol?
During your online consultation at Cured Pharmacy, the prescriber will review several important factors to ensure tadalafil is safe for you while taking atenolol. They will ask about your current blood pressure readings and whether your blood pressure is well controlled. If your blood pressure is very low (hypotension), tadalafil may not be suitable [4].
You will also be asked about any heart conditions, including angina, heart failure, recent heart attack or stroke, and whether your doctor has told you to avoid strenuous physical activity. Sexual activity increases the heart's workload, so if your heart condition is unstable or severe, your prescriber may advise against using tadalafil until your condition improves [2].
The prescriber will check all your current medicines, not just atenolol, to identify any other interactions. For example, if you are also taking an alpha-blocker (such as doxazosin or tamsulosin) for prostate symptoms, the risk of low blood pressure is higher, and a lower starting dose of tadalafil will be recommended. You must declare every medicine you take, including over-the-counter products and supplements, so the prescriber can make a safe decision [3][4].
Finally, the prescriber will confirm that you are not taking any medicines that must never be combined with tadalafil, such as nitrates (GTN spray, isosorbide mononitrate), nicorandil, riociguat, or recreational drugs known as poppers. These combinations can cause a dangerous drop in blood pressure and are absolutely contraindicated [4].
What you need to know
- Tadalafil and atenolol can usually be taken together if your blood pressure is stable and well controlled.
- Both medicines can lower blood pressure, so your prescriber will check your cardiovascular health carefully.
- Start with the lowest effective dose of tadalafil and watch for dizziness or light-headedness.
- Never take tadalafil with nitrates, nicorandil, or poppers—this combination is dangerous.
- Contact your GP if you have new erectile dysfunction, as it can be an early sign of heart disease.
Practical advice for taking tadalafil and atenolol together
If your prescriber approves tadalafil while you are on atenolol, there are some practical steps you can take to minimise side effects and use the medicine safely. Start with the lowest effective dose (usually 10mg on-demand or 2.5mg daily) and see how you respond before considering a higher dose [4]. Take tadalafil as directed—on-demand tablets should be taken at least 30 minutes before sexual activity, and daily tablets at the same time each day.
Monitor your blood pressure if you have a home monitor, especially in the first few weeks of treatment. If you notice your blood pressure dropping significantly or you feel dizzy, faint, or unusually tired, contact your GP or prescriber. Avoid drinking large amounts of alcohol when using tadalafil, as alcohol can lower blood pressure further and make erectile dysfunction worse [3].
Do not stop or change the dose of atenolol without speaking to your GP, even if you think it is contributing to erectile dysfunction. Some men find that beta-blockers can worsen ED, but stopping a heart or blood-pressure medicine suddenly can be dangerous. Your GP may be able to adjust your treatment or switch you to a different medicine if needed [1][2].
If you experience chest pain during or after sex, stop the activity and seek urgent medical help. Do not take GTN or any nitrate medicine if you have used tadalafil in the past 48 hours, as this combination is dangerous. Make sure any healthcare professional treating you knows you have taken tadalafil [4].
When to contact your prescriber or GP
Contact your prescriber or GP if you develop new symptoms such as persistent dizziness, fainting, swelling of the ankles, worsening breathlessness, or chest pain. These could indicate that your blood pressure is too low or that your heart condition needs review. Also get in touch if tadalafil is not working for you, as your dose may need adjusting or an alternative treatment considered [2].
Are there alternatives to tadalafil if you take atenolol?
If tadalafil is not suitable or well tolerated alongside atenolol, there are other PDE5 inhibitors available, including sildenafil (Viagra), vardenafil (Levitra), and avanafil (Spedra) [3][5][6]. All of these medicines work in a similar way and have similar interactions with blood-pressure medicines, so the same precautions apply. Your prescriber will help you choose the option that best fits your lifestyle and medical history.
Sildenafil is taken about one hour before sex and lasts for around four to six hours, making it a good choice if you prefer a shorter duration of action [3]. Avanafil works faster (in about 15 to 30 minutes) and may cause fewer side effects in some men [6][11]. Vardenafil is similar to sildenafil in timing and duration [5]. All are available at Cured Pharmacy after a prescriber consultation.
If PDE5 inhibitors are not suitable for you, other treatments for erectile dysfunction include alprostadil cream (Vitaros) or injection (Caverject), vacuum erection devices, or referral to a specialist for further assessment [7]. Lifestyle changes such as losing weight, stopping smoking, reducing alcohol, and increasing physical activity can also improve erectile function and cardiovascular health [1][2].
It is important to see your GP if you have new or worsening erectile dysfunction, as ED can be an early warning sign of heart disease or diabetes. Treating the underlying cause, as well as the ED itself, is the best approach for long-term health [1].
When to get urgent help
- Chest pain during or after sex—stop activity and call 999. Do not take nitrates if you have used tadalafil in the past 48 hours.
- Erection lasting more than 4 hours (priapism)—go to A&E immediately to prevent permanent damage.
- Sudden loss of vision or hearing—stop tadalafil and seek urgent medical help.
- Severe dizziness, fainting, or collapse—call 999 or go to A&E, especially if you have taken tadalafil and atenolol together.
- New or worsening chest pain, breathlessness, or swelling of ankles—contact your GP the same day for review.
Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.
Can you take tadalafil and atenolol long-term?
Yes, many men take tadalafil and atenolol together safely over the long term, provided their blood pressure and heart condition remain stable [4]. Regular monitoring by your GP is important to ensure both medicines continue to be appropriate and effective. Your GP will check your blood pressure, review your heart health, and adjust your treatment if needed.
If you are using daily tadalafil (2.5mg or 5mg), this can be a convenient option for men who prefer not to plan ahead for sexual activity. Daily tadalafil maintains a steady level of the medicine in your body, which may also help with urinary symptoms if you have an enlarged prostate [4]. On-demand tadalafil (10mg or 20mg) is taken only when needed and may be preferred if you have sex less frequently.
Your prescriber at Cured Pharmacy will recommend follow-up consultations to review how you are getting on with tadalafil, check for side effects, and ensure your cardiovascular health is stable. If your atenolol dose changes, or if you start any new medicines, let your prescriber know, as this may affect the suitability or dose of tadalafil.
Remember that tadalafil does not protect against sexually transmitted infections, and it does not act as a contraceptive. If you or your partner are at risk of pregnancy or STIs, use appropriate protection [4].
Keeping your treatment safe and effective
Always take tadalafil exactly as prescribed, and do not exceed the recommended dose. Taking more than one PDE5 inhibitor at the same time, or taking a higher dose than prescribed, increases the risk of side effects and does not improve effectiveness. Store your medicine in a cool, dry place, out of reach of children, and check the expiry date before use [4].
Start low, go slow
If you are taking atenolol or any blood pressure medicine, your prescriber will usually start you on the lowest dose of tadalafil (10mg on-demand or 2.5mg daily) to minimise the risk of low blood pressure. You can increase the dose later if needed and well tolerated.
Scientific References
- NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 18 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 18 October 2026]
- Joint Formulary Committee. (n.d.). Sildenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/sildenafil/ [accessed 18 October 2026]
- Joint Formulary Committee. (n.d.). Tadalafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/tadalafil/ [accessed 18 October 2026]
- Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 18 October 2026]
- Joint Formulary Committee. (n.d.). Avanafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/avanafil/ [accessed 18 October 2026]
- Joint Formulary Committee. (n.d.). Alprostadil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/alprostadil/ [accessed 18 October 2026]
- Feldman, H. A., Goldstein, I., Hatzichristou, D. G., Krane, R. J., & McKinlay, J. B. (1994). Impotence and its medical and psychosocial correlates: Results of the Massachusetts Male Aging Study. Journal of Urology, 151(1), 54–61. https://pubmed.ncbi.nlm.nih.gov/8254833/ [accessed 18 October 2026]
- National Institute for Health and Care Excellence. (2014). Erectile dysfunction: avanafil (ESNM45). https://www.nice.org.uk/advice/esnm45 [accessed 18 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.
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Common Questions
Can I take tadalafil if I am on atenolol for high blood pressure?
Yes, tadalafil can usually be prescribed alongside atenolol if your blood pressure is stable and well controlled. Your prescriber will check your blood pressure readings and cardiovascular health during the consultation.
Will tadalafil make my blood pressure drop too low if I take atenolol?
Tadalafil can lower blood pressure slightly, and atenolol does the same, so there is a potential additive effect. Most men tolerate this well, but your prescriber will assess your individual risk and may start you on a lower dose.
Do I need to stop atenolol before starting tadalafil?
No, do not stop atenolol without speaking to your GP. Stopping a beta-blocker suddenly can be dangerous. Your prescriber will assess whether tadalafil is safe to add to your current treatment.
What side effects should I watch for when taking tadalafil and atenolol together?
Watch for dizziness, light-headedness, headache, or feeling faint, especially when standing up. If these symptoms are severe or persistent, contact your prescriber or GP.
Can I take tadalafil if I also take other blood pressure medicines?
Possibly, but your prescriber must review all your medicines during the consultation. Some combinations (such as with alpha-blockers) need extra caution, and nitrates or nicorandil are absolutely contraindicated with tadalafil.
How long after taking tadalafil can I take a nitrate spray if I get chest pain?
You must not take nitrates (such as GTN spray) within 48 hours of taking tadalafil, as this can cause a dangerous drop in blood pressure. Tell any healthcare professional treating you that you have taken tadalafil.
Is daily tadalafil safe with atenolol?
Daily tadalafil (2.5mg or 5mg) can be prescribed with atenolol if your prescriber assesses it as safe. The same blood pressure and cardiovascular checks apply as for on-demand tadalafil.
What should I do if tadalafil does not work while I am on atenolol?
Contact your prescriber. Your dose may need adjusting, or an alternative PDE5 inhibitor may be more suitable. Also see your GP, as beta-blockers can sometimes contribute to erectile dysfunction, and your treatment may need review.
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Medically reviewed by
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