Tadalafil and Umeclidinium: Can You Take Them Together?

Tadalafil and Umeclidinium: Understanding the Interaction

Published: 26 October 2026

Many men wonder whether tadalafil and umeclidinium can be taken together safely. The good news is that no major interaction is commonly reported between tadalafil (a medicine for erectile dysfunction) and umeclidinium (an inhaler used to manage chronic obstructive pulmonary disease, or COPD). However, your prescriber will still review your full medical history and all current medicines during your consultation to ensure the combination is appropriate for you personally.

What is tadalafil and umeclidinium?

Tadalafil is a prescription medicine used to treat erectile dysfunction (ED) in men [3][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 the active ingredient in branded Cialis and is also available as a generic medicine. It can be taken on-demand (10 mg or 20 mg at least 30 minutes before sex, with effects lasting up to 36 hours) or as a daily low dose (2.5 mg or 5 mg) [4].

Umeclidinium is a long-acting muscarinic antagonist (LAMA) inhaler used to help keep the airways open in people with COPD [12]. It is often prescribed as Incruse Ellipta or in combination inhalers such as Anoro Ellipta (umeclidinium with vilanterol). Umeclidinium works by blocking receptors in the lungs that cause the airways to narrow, making it easier to breathe. It is taken once daily and is not a 'reliever' inhaler for sudden breathlessness.

Because these two medicines work on completely different systems in the body—tadalafil on blood vessels and umeclidinium on the airways—they do not interfere with each other's action in a way that would make the combination unsafe. Your prescriber will still want to know about all your medicines, including inhalers, to get a complete picture of your health.

How tadalafil and umeclidinium work in the body

Tadalafil works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5), which is found mainly in the smooth muscle of blood vessels in the penis [3][4]. When you are sexually stimulated, your body releases a chemical messenger called nitric oxide, which increases levels of another messenger (cyclic GMP) that relaxes blood vessels. PDE5 normally breaks down cyclic GMP; by blocking PDE5, tadalafil helps blood vessels stay relaxed and allows more blood to flow into the penis, supporting an erection. Tadalafil also has a mild effect on blood pressure throughout the body, which is why it can sometimes cause dizziness or headache.

Umeclidinium, on the other hand, blocks muscarinic receptors in the lungs [12]. These receptors are part of the nervous system that controls muscle tone in the airways. By blocking them, umeclidinium prevents the airways from tightening, which helps people with COPD breathe more easily. Umeclidinium is absorbed mainly in the lungs and has minimal effects on the cardiovascular system at the doses used in inhalers.

Because tadalafil acts on blood vessels and umeclidinium acts on lung receptors, there is no direct pharmacological clash between them. Neither medicine is known to significantly alter the breakdown or effectiveness of the other. This is why the combination is generally considered safe, provided your overall health is suitable for both treatments.

What about other medicines in your inhaler?

If you use a combination inhaler such as Anoro Ellipta (umeclidinium with vilanterol, a long-acting beta-agonist), the same principle applies: no major interaction with tadalafil is commonly reported [12]. However, if you have significant heart or lung disease, your prescriber will want to review your full medication list and medical history to ensure that sexual activity itself is safe for you. Always declare every medicine you take, including inhalers, nasal sprays, eye drops, and over-the-counter products, during your consultation.

What your prescriber checks before approving tadalafil and umeclidinium together

Even though no major interaction exists between tadalafil and umeclidinium, your prescriber will carry out a thorough review during your online consultation [1][2]. They will ask about your cardiovascular health, because erectile dysfunction can be an early warning sign of heart disease or diabetes, and because tadalafil can lower blood pressure slightly. If you have COPD severe enough to need a daily inhaler, your prescriber will want to know whether you also have heart problems, high blood pressure, or other conditions that might affect your suitability for ED treatment.

Your prescriber will check that you are not taking any medicines that are contraindicated with tadalafil. These include nitrates (such as GTN spray, isosorbide mononitrate or dinitrate), nicorandil, riociguat, and recreational drugs called 'poppers' (amyl or alkyl nitrites) [3][4]. Combining tadalafil with any of these can cause a dangerous drop in blood pressure. You must never take tadalafil with another PDE5 inhibitor (such as sildenafil or vardenafil) at the same time.

If you take other medicines for blood pressure (for example, amlodipine, ramipril, or bisoprolol), or an alpha-blocker for prostate symptoms (such as tamsulosin or doxazosin), your prescriber will assess whether the combination is safe and may recommend starting on a lower dose of tadalafil [4]. They will also check for any medicines that can raise tadalafil levels in your blood, such as certain antifungals or HIV medicines. Declaring your umeclidinium inhaler helps your prescriber build a complete picture and ensure the treatment plan is tailored to you.

Practical advice for using tadalafil and umeclidinium safely

If your prescriber approves tadalafil, you can continue using your umeclidinium inhaler exactly as prescribed by your doctor [12]. Do not stop or change the dose of your inhaler without medical advice, as this could worsen your breathing. Take your umeclidinium at the same time each day (usually in the morning) and use tadalafil as directed—either on-demand before sexual activity or as a daily low dose, depending on the regimen your prescriber recommends [4].

Be aware of the common side effects of tadalafil, which can include headache, indigestion, back pain, muscle aches, flushing, and nasal congestion [4]. These are usually mild and temporary. If you feel dizzy or light-headed after taking tadalafil, sit or lie down until the feeling passes, and avoid driving or operating machinery. Heavy alcohol can make erectile dysfunction worse and add to the blood-pressure-lowering effect of tadalafil, so it is best to limit your intake.

If you develop chest pain during sex, stop immediately and do not take a nitrate spray or tablet (such as GTN) without calling 999 first, because the combination with tadalafil can be dangerous [3][4]. Seek urgent help if you have an erection lasting more than four hours (priapism), sudden loss of vision or hearing, or severe dizziness. Always keep your GP and respiratory team informed about all the medicines you are taking, including ED treatment, so they can coordinate your care.

Can I use my reliever inhaler with tadalafil?

Yes. Short-acting 'reliever' inhalers such as salbutamol (Ventolin) or ipratropium are not known to interact with tadalafil [12]. You should continue to use your reliever inhaler as needed for sudden breathlessness. If you find you are needing your reliever more often than usual, speak to your GP or respiratory nurse, as this may mean your COPD is not well controlled.

Warning signs and when to seek help with tadalafil and umeclidinium

Most men tolerate tadalafil well, even when using it alongside umeclidinium and other COPD medicines [3][4]. However, you should be aware of the warning signs that need urgent attention. If you experience chest pain, severe dizziness, or fainting after taking tadalafil, call 999 or go to A&E immediately. Do not take a nitrate medicine (GTN spray or tablet) if you have used tadalafil in the past 48 hours, as this combination can cause a life-threatening drop in blood pressure [4].

Priapism—a painful erection lasting more than four hours—is a rare but serious side effect of all PDE5 inhibitors [3][4]. If this happens, seek emergency medical help straight away, as permanent damage to the penis can occur if it is not treated promptly. Sudden loss of vision in one or both eyes, or sudden decrease or loss of hearing (sometimes with ringing in the ears or dizziness), are also medical emergencies and require immediate assessment.

If your breathing worsens or you develop new symptoms such as chest tightness, wheezing, or a persistent cough, contact your GP or respiratory team as soon as possible. While this is unlikely to be related to tadalafil, any change in your COPD should be reviewed. Remember, erectile dysfunction itself can be an early sign of cardiovascular disease [1][2], so if you have not already done so, see your GP for a full health check, including blood pressure, cholesterol, and blood sugar tests.

Getting tadalafil and umeclidinium through Cured Pharmacy

At Cured Pharmacy, a GPhC-registered online pharmacy (GPhC 9012511), you can request tadalafil after completing a short online consultation [2]. A UK-registered prescriber will review your answers, including all your current medicines such as umeclidinium, and approve treatment only if it is safe and appropriate for you. You will never be asked to stop or change a medicine prescribed by your GP without their knowledge.

We stock a range of tadalafil options to suit different needs and budgets. Generic tadalafil is available from £7.95 for on-demand tablets, or £0.45 per tablet for daily-dose treatment (first order with code Ednew: £6.36 and £0.36 respectively). We also offer branded Cialis, Teva tadalafil, and Avarante. All prices include the prescriber consultation, and your medicine is dispensed by our UK pharmacists and delivered discreetly to your door.

If you have any questions about using tadalafil alongside your COPD inhalers or other medicines, our pharmacy team is here to help. You can contact us through the website, and we will respond promptly. Remember, the online consultation is a clinical assessment, not an automatic approval: your safety is our priority, and we will only supply tadalafil if the prescriber is satisfied it is suitable for you.

What if I take other medicines as well?

During your consultation, you will be asked to list every medicine you take, including prescription medicines, over-the-counter products, herbal remedies, and supplements [2]. This is essential for your safety. If you take medicines that can interact with tadalafil—such as alpha-blockers, certain antibiotics, antifungals, or HIV medicines—the prescriber will adjust the dose or advise whether tadalafil is suitable. Never assume a medicine is safe to combine with tadalafil without declaring it first.

Scientific References

1. NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 26 October 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 26 October 2026]
3. Joint Formulary Committee. (n.d.). Sildenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/sildenafil/ [accessed 26 October 2026]
4. Joint Formulary Committee. (n.d.). Tadalafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/tadalafil/ [accessed 26 October 2026]
5. Electronic Medicines Compendium. (n.d.). Summaries of Product Characteristics and Patient Information Leaflets. https://www.medicines.org.uk/emc/ [accessed 26 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.