Tadalafil and Minoxidil: Can You Take Them Together?
Learn whether it's safe to use both medicines and what your prescriber checks during your consultation.
Takes less than 2 minutes to complete 100% online
ED Treatments We Offer
Pricing Disclaimer: Prices on some pages may not be up to date — the live pricing table below and pricing shown during consultation are official current prices and take precedence over any other figures on the site.
Not sure which one? Start a free consultation →
Tadalafil and Minoxidil: Understanding the Interaction
Published: 23 October 2026
Many men wonder whether they can safely take tadalafil and minoxidil together—one for erectile dysfunction and the other for hair loss. The good news is that no major direct interaction between these two medicines is commonly reported in clinical practice. However, both can affect blood pressure in different ways, so your prescriber will always review your full medical history and current medicines during your consultation to ensure the combination is suitable for you.
Key takeaways
- No major direct interaction is commonly reported between tadalafil and topical minoxidil for hair loss.
- Both medicines can affect blood pressure, so your prescriber reviews your full medical history before approval.
- Oral minoxidil for high blood pressure requires closer monitoring when combined with tadalafil.
- Always declare all medicines, including over-the-counter treatments, during your tadalafil consultation.
- Seek urgent help for an erection lasting over four hours, sudden vision or hearing loss, or chest pain during sex.
What is tadalafil and minoxidil used for?
Tadalafil is a prescription medicine used to treat erectile dysfunction (ED). 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 [4]. Tadalafil is available as an on-demand treatment (10 mg or 20 mg tablets taken at least 30 minutes before sex, with effects lasting up to 36 hours) or as a daily low-dose option (2.5 mg or 5 mg) [4]. It does not work without sexual stimulation.
Minoxidil is most commonly used as a topical solution or foam applied to the scalp to treat male pattern hair loss (androgenetic alopecia). It works by widening blood vessels and opening potassium channels, which may improve blood flow to hair follicles and prolong the growth phase of hair. Minoxidil is also available as an oral tablet for severe high blood pressure, though this use is much less common in the UK. When applied to the scalp, only a small amount is absorbed into the bloodstream, but some systemic effects on blood pressure can still occur, particularly at higher doses or with widespread application.
How do tadalafil and minoxidil interact?
There is no well-documented direct drug interaction between tadalafil and topical minoxidil. The two medicines work through different mechanisms and are not known to interfere with each other's metabolism or effectiveness. However, both can have an effect on blood pressure, which is why your prescriber will want to check your overall cardiovascular health and current medicines before approving tadalafil.
Tadalafil can cause a mild drop in blood pressure, particularly when you first start taking it or if you are also using other blood-pressure-lowering medicines [4]. Topical minoxidil, when absorbed through the scalp, can occasionally lower blood pressure or cause dizziness, especially if used in large amounts or on a damaged scalp. Oral minoxidil (used for high blood pressure) has a more pronounced blood-pressure-lowering effect. The combination of tadalafil with any form of minoxidil is not contraindicated, but your prescriber will assess whether the additive effect on blood pressure is safe for you, particularly if you have existing heart or blood-pressure conditions.
What about oral minoxidil?
If you are taking oral minoxidil tablets for high blood pressure (a less common use in the UK), your prescriber will pay closer attention to the combination with tadalafil. Both medicines can lower blood pressure, and taking them together may increase the risk of dizziness, light-headedness, or fainting, especially when standing up quickly. Your prescriber will review your blood pressure readings, other medicines, and overall cardiovascular health to decide whether tadalafil is suitable. If approved, you may be advised to start on the lowest effective dose of tadalafil and monitor for any symptoms of low blood pressure.
At a glance
What does your prescriber check before approving tadalafil and minoxidil together?
When you request tadalafil through Cured Pharmacy's online consultation, a UK-registered prescriber will review your full medical history, including all current medicines and supplements. They will specifically check whether you are using minoxidil (topical or oral), any other blood-pressure medicines, and whether you have conditions such as heart disease, low blood pressure, or a history of stroke [2]. The consultation will also ask about medicines that are absolutely contraindicated with tadalafil, such as nitrates (GTN spray, isosorbide mononitrate), nicorandil, riociguat, or recreational drugs known as 'poppers' (amyl or alkyl nitrites) [4]. Do not take tadalafil together with any of these medicines, as the combination can cause a dangerous drop in blood pressure.
Your prescriber will also check for alpha-blockers (such as tamsulosin or doxazosin, used for prostate symptoms or high blood pressure), as these can interact with tadalafil and increase the risk of dizziness or fainting [4]. If you are stable on an alpha-blocker, tadalafil can usually be prescribed at a lower starting dose. The prescriber will also review potent CYP3A4 inhibitors (such as ritonavir, ketoconazole, itraconazole, or clarithromycin), which can raise tadalafil levels in the blood and require dose adjustments [4]. If you are using topical minoxidil for hair loss and have no other significant cardiovascular concerns, the combination with tadalafil is generally considered safe, but the final decision rests with your prescriber after a full assessment.
Practical advice for taking tadalafil with minoxidil
If your prescriber approves tadalafil while you are using minoxidil, follow the dosing instructions carefully. For on-demand tadalafil, take one 10 mg or 20 mg tablet at least 30 minutes before you plan to have sex; the effect can last up to 36 hours, so do not take more than one dose in 24 hours [4]. For daily tadalafil, take one 2.5 mg or 5 mg tablet at the same time each day, regardless of when you plan to have sex [4]. Sexual stimulation is still needed for tadalafil to work.
Continue using your minoxidil as directed—usually applied to the scalp twice daily for hair loss. Avoid applying minoxidil to broken or irritated skin, as this can increase absorption and the risk of side effects. Be aware of symptoms that might suggest low blood pressure, such as dizziness, light-headedness (especially when standing up), fainting, or unusual tiredness. If you experience any of these, sit or lie down and contact your GP or pharmacist for advice. Avoid drinking large amounts of alcohol when taking tadalafil, as alcohol can worsen erectile dysfunction and add to the blood-pressure-lowering effect [4]. Grapefruit juice can also raise tadalafil levels in the blood, so it is best avoided.
What if I start a new medicine?
If you are prescribed a new medicine by your GP or another healthcare professional while taking tadalafil, always tell them you are using tadalafil for erectile dysfunction. Similarly, if you start using minoxidil (or any other new treatment) after being prescribed tadalafil, inform your prescriber or pharmacist. Some medicines can interact with tadalafil or affect your blood pressure, and your treatment may need to be reviewed. Never stop or change a prescribed medicine without advice from a healthcare professional.
Always declare minoxidil use
When requesting tadalafil, list all medicines you use—including over-the-counter minoxidil for hair loss. This helps your prescriber assess whether the combination is safe for your blood pressure and overall health.
Warning signs and when to seek urgent help with tadalafil and minoxidil
Most men tolerate tadalafil and minoxidil well when used as directed, but it is important to know the warning signs that require urgent medical attention. If you develop an erection that lasts longer than four hours (priapism), go to A&E immediately or call 999. Priapism is a medical emergency that can cause permanent damage to the penis if not treated promptly [4]. Sudden loss of vision in one or both eyes, or sudden decrease or loss of hearing (which may be accompanied by ringing in the ears or dizziness), also requires urgent medical help—stop taking tadalafil and seek advice straight away [4].
If you experience chest pain during or after sex, do not use nitrate medicines (such as GTN spray) to relieve it, as the combination with tadalafil can be dangerous [4]. Instead, call 999 and tell the paramedics you have taken tadalafil. Severe dizziness, fainting, or a very fast or irregular heartbeat should also prompt you to seek same-day medical advice, as these may indicate a significant drop in blood pressure or another cardiovascular problem. If you notice any signs of an allergic reaction (such as swelling of the face, lips, tongue, or throat, difficulty breathing, or a severe rash), stop taking tadalafil and seek emergency help. Always read the patient information leaflet that comes with your medicine and contact your GP or pharmacist if you have any concerns.
Getting tadalafil and minoxidil: what you need to know
Tadalafil is a prescription-only medicine in the UK. At Cured Pharmacy, you can request tadalafil by completing a short online consultation, which is reviewed by a UK-registered prescriber [2]. If approved, your medicine is dispensed by our GPhC-registered pharmacy (GPhC 9012511) and delivered discreetly to your door. We offer a range of tadalafil options, including generic tadalafil from £7.95 (or £6.36 for your first order with code Ednew), Tadalafil 20 mg (Teva) at £9.99 (£7.99 with Ednew), Avarante (tadalafil) 10 mg at £11.49 (£9.19 with Ednew), and branded Cialis at £12.00 (£9.60 with Ednew). All prices include the consultation and delivery.
Minoxidil for hair loss is available over the counter from pharmacies and online without a prescription, typically as a 5% solution or foam for men. Oral minoxidil for high blood pressure is prescription-only. If you are using minoxidil and considering tadalafil for erectile dysfunction, the online consultation will ask about all your current medicines, including over-the-counter treatments and supplements. Be honest and thorough in your answers, as this helps the prescriber make a safe decision. If you have not seen your GP about erectile dysfunction before, we encourage you to do so, as ED can sometimes be an early sign of underlying health conditions such as heart disease or diabetes [1]. Treating the underlying cause can improve your overall health and, in some cases, improve erectile function.
Other erectile dysfunction treatments at Cured Pharmacy
If tadalafil is not suitable for you, or if you would like to try a different PDE5 inhibitor, Cured Pharmacy also offers sildenafil (generic Viagra) from £0.45 (£0.36 with Ednew), Sildenafil 100 mg (Teva) at £16.99 (£13.59 with Ednew), branded Viagra at £37.95 (£30.36 with Ednew), vardenafil (generic Levitra) at £16.95 (£13.56 with Ednew), and Spedra (avanafil) at £20.95 (£16.76 with Ednew) [3][5][6]. Each medicine works in a slightly different way and has a different duration of action, so your prescriber can help you choose the one that best fits your needs and lifestyle. All require a consultation and prescription, and the same safety checks apply, including a review of your use of minoxidil or any other medicines.
When to get urgent help
- Erection lasting longer than four hours (priapism) – go to A&E or call 999 immediately
- Sudden loss of vision in one or both eyes – stop tadalafil and seek urgent medical help
- Sudden decrease or loss of hearing, ringing in ears, or dizziness – stop tadalafil and contact a doctor
- Chest pain during or after sex – call 999; do not use nitrate medicines (GTN spray)
- Severe dizziness, fainting, or very fast/irregular heartbeat – seek same-day medical advice or call 111
Call 999 or go to A&E in an emergency, or contact NHS 111 for urgent advice.
Scientific References
- NHS. (n.d.). Erectile dysfunction (impotence). NHS website. https://www.nhs.uk/conditions/erection-problems-erectile-dysfunction/ [accessed 23 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 23 October 2026]
- Joint Formulary Committee. (n.d.). Sildenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/sildenafil/ [accessed 23 October 2026]
- Joint Formulary Committee. (n.d.). Tadalafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/tadalafil/ [accessed 23 October 2026]
- Joint Formulary Committee. (n.d.). Vardenafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/vardenafil/ [accessed 23 October 2026]
- Joint Formulary Committee. (n.d.). Avanafil. British National Formulary. NICE. https://bnf.nice.org.uk/drugs/avanafil/ [accessed 23 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.
Trusted by thousands
Real people, real results
“Fabulous service and quick delivery”
“Felt the effects of these after about 5 days. Erections are better and can get aroused and ready easier”
“Excellent value and brilliant customer service”
“I received excellent service and everything went well. The order arrived quickly and in perfect condition. It's working very well! Thank you to the whole team for the great work!”
“Delivery was good, the product lived up to expectations.”
How Our Online Service Works
Choose your treatment
Select from our recommended UK-licensed medications.
Answer quick questions
Select safe UK treatments. Quick answers.
Get it delivered fast
We will deliver direct to you as quickly as tomorrow.
Get Discreet ED Treatment Online
- Reviewed by UK-based prescribers
- Takes under 3 minutes
- Discreet Packaging
Your Questions Answered
Can't find your answer? Our UK pharmacists review every consultation and can help.
Can I use tadalafil and minoxidil together safely?
Yes, in most cases. No major direct interaction is commonly reported between tadalafil and topical minoxidil for hair loss, but your prescriber will check your blood pressure and overall health during the consultation to ensure the combination is safe for you.
Will minoxidil affect how well tadalafil works?
No, minoxidil does not interfere with the way tadalafil works to improve erectile function. The two medicines act through different mechanisms and do not reduce each other's effectiveness.
What if I'm taking oral minoxidil for high blood pressure?
Oral minoxidil has a stronger blood-pressure-lowering effect than topical minoxidil. Your prescriber will assess whether tadalafil is suitable and may start you on a lower dose, with advice to monitor for dizziness or light-headedness.
Do I need to tell my prescriber I'm using minoxidil for hair loss?
Yes, always declare all medicines and treatments you are using, including over-the-counter products like minoxidil. This helps your prescriber make a safe and informed decision about your tadalafil prescription.
Can tadalafil cause hair loss or make it worse?
No, tadalafil is not known to cause or worsen hair loss. If you are concerned about hair loss, speak to your GP or pharmacist about appropriate treatments such as minoxidil or finasteride.
What should I do if I feel dizzy after taking tadalafil with minoxidil?
Sit or lie down until the dizziness passes. Avoid standing up quickly. If dizziness is severe, persistent, or accompanied by fainting or chest pain, seek medical advice the same day or call 111 for guidance.
Are there any medicines I must not take with tadalafil?
Yes. Do not take tadalafil with nitrates (GTN spray, isosorbide mononitrate), nicorandil, riociguat, or recreational drugs called 'poppers', as the combination can cause a dangerous drop in blood pressure.
How do I order tadalafil from Cured Pharmacy if I'm using minoxidil?
Complete our online consultation, listing minoxidil and all other medicines you use. A UK prescriber will review your answers and, if suitable, approve your prescription. Your tadalafil will be dispensed and delivered discreetly.
Medically reviewed by
Tarun Kumar, Superintendent Pharmacist (GPhC 2233073)