Tadalafil 20mg Tablets
Tadalafil 20mg tablets, the full-strength on-demand PDE5 inhibitor for erectile dysfunction
Tadalafil 20mg tablets are a licensed prescription-only PDE5 inhibitor used on demand to treat erectile dysfunction (ED) in adult men. So this is the full-strength on-demand dose of tadalafil, the active ingredient also sold under the brand name Cialis. In particular, tadalafil is distinct from sildenafil (Viagra) because of its much longer duration of action, which is why it is sometimes called the “weekend tablet” and why it fits patients who want flexibility rather than a tight time window. Furthermore, at Courier Pharmacy we supply tadalafil 20mg tablets after a proper prescriber assessment, with clear advice on cardiovascular safety, nitrate interactions, and the realistic expectations around what PDE5 inhibitors can and cannot do.
When to see a doctor before starting or continuing tadalafil 20mg
Tadalafil is well tolerated for most patients. However, some situations need medical attention before starting, and any of these during treatment warrants contacting your prescriber:
- Taking any form of nitrate (GTN spray or tablets, isosorbide mononitrate or dinitrate, or recreational “poppers” / amyl nitrite).
- Taking riociguat (a soluble guanylate cyclase stimulator used in pulmonary hypertension).
- Any history of heart attack in the last 90 days or stroke in the last 6 months.
- Unstable angina or angina during sexual activity.
- Uncontrolled high or low blood pressure.
- Severe heart failure (NYHA class 3 to 4).
- Serious uncontrolled arrhythmia.
- Severe liver impairment.
- End-stage kidney disease or dialysis.
- Previous non-arteritic anterior ischaemic optic neuropathy (NAION) with any PDE5 inhibitor.
- Hereditary degenerative retinal conditions (retinitis pigmentosa).
- Priapism (an erection lasting more than 4 hours) is a medical emergency, go to A&E.
- Sudden hearing loss, ringing in the ears, or dizziness during or after a dose.
- New chest pain during or after sexual activity, or any symptoms of a possible heart attack.
For life-threatening symptoms (chest pain, stroke-like features, prolonged erection, sudden visual or hearing loss), call 999. For urgent but non-emergency concerns, call NHS 111.
Five key takeaways about tadalafil 20mg tablets
- Licensed UK prescription-only medicine (POM), a phosphodiesterase type 5 (PDE5) inhibitor.
- The full-strength on-demand dose of tadalafil for erectile dysfunction in men aged 18 and over.
- Taken 30 minutes to 36 hours before sexual activity, maximum one tablet in any 24-hour period.
- Absolutely contraindicated with any form of nitrate and with riociguat.
- Not an aphrodisiac, so sexual stimulation is still needed for an erection to happen.
What is erectile dysfunction: overview
- Erectile dysfunction (ED) is the persistent inability to get or keep an erection sufficient for satisfactory sexual activity.
- It affects around 50 percent of men aged 40 to 70 to some degree, rising with age.
- ED is often an early marker of cardiovascular disease, particularly in men under 60, because the penile arteries are smaller than the coronary arteries.
- Common contributors include cardiovascular disease, diabetes, hypertension, obesity, smoking, sedentary lifestyle, psychological factors, and prescribed medicines.
- PDE5 inhibitors like tadalafil are first-line pharmacological treatment in the UK (NICE CKS, BSSM 2017).
A brief history of tadalafil
Tadalafil was developed by Icos Corporation (later Lilly Icos) in the 1990s and licensed as Cialis in Europe and the US in 2003. So it was the third PDE5 inhibitor to reach the market after sildenafil (Viagra, 1998) and vardenafil (Levitra, 2003). In particular, its selling point from the start was its long duration of action, giving a more natural dosing-sex separation than sildenafil could offer. Furthermore, generic tadalafil became available after the European patent expired in 2017, substantially reducing the cost.
How tadalafil differs from sildenafil, vardenafil, and avanafil
All four UK-licensed PDE5 inhibitors share the same core mechanism. However, they differ in onset, duration, food sensitivity, and side-effect profile. So sildenafil (Viagra) acts within 30 to 60 minutes with 4 to 6 hours of effect; vardenafil (Levitra) is similar; avanafil (Spedra) is the fastest-acting at 15 to 30 minutes with 6 hours of effect; and tadalafil (Cialis) has the longest window at up to 36 hours. In particular, sildenafil absorption is significantly reduced by a heavy fatty meal, while tadalafil and avanafil are not. Furthermore, this is why the choice of PDE5 inhibitor is individualised to the patient’s lifestyle, sexual pattern, and preferences.
Why ED should be assessed, not just treated
Erectile dysfunction is often the first visible sign of early cardiovascular disease, especially in men under 60. So the arteries of the penis are smaller than the coronary arteries, which means endothelial dysfunction tends to show up as ED a few years before it shows up as angina or heart attack. In particular, this is why BSSM 2017 and NICE CKS both recommend a cardiovascular risk assessment and basic blood tests (lipids, HbA1c, testosterone) in men presenting with ED. Furthermore, treating only the ED without looking at the wider picture is a missed opportunity for prevention.
Why choose Courier Pharmacy for your tadalafil 20mg tablets
Registered, independent, and patient-led
Courier Pharmacy is a UK-registered independent pharmacy regulated by the General Pharmaceutical Council (GPhC 9010051). So when you order tadalafil through us, you work with a proper pharmacy team, not a warehouse. Furthermore, our independence means we can spend time on sexual health questions where a chain would not.
Specialist prescriber expertise
Our UK prescribers understand ED within its wider endocrine and metabolic context: testosterone, diabetes, hypertension, cardiovascular risk, and the medicines that cause or worsen it. In particular, this matters because ED is often one piece of a bigger health picture, and treating just the visible symptom misses the chance to address the drivers.
BSSM-aligned consultation
Our ED consultation is aligned with British Society for Sexual Medicine (BSSM) 2017 guidance. So we check cardiovascular risk, nitrate use, and the common secondary causes before dispensing. In particular, we routinely suggest baseline bloods (lipids, HbA1c, testosterone) for men who have not had them recently, and we flag when ED points to a wider workup that goes beyond a tablet.
Dr Ada Jex-Cori, our brand pharmacist
Our brand pharmacist is Dr Ada Jex-Cori. She represents the spirit of what we do. Named for Ada Lovelace, Sophia Jex-Blake, and Gerty Cori, she stands for evidence-led, unafraid-of-questions medicine. Her message runs through everything we prescribe:
You’re not broken. The system is. We’re here to change that.
For ED patients in particular, this matters. So many men wait years before seeking help because of embarrassment or because they assume ED is “just ageing” rather than a treatable medical condition that is also a cardiovascular risk marker. Furthermore, we treat ED as the real medical condition it is, not as a cosmetic or lifestyle request.
Care that keeps showing up
ED treatment is a long-term project. So we are here for the follow-up questions along the way: dose adjustments, switching between PDE5 inhibitors, when to think about daily low-dose rather than on-demand, and how ED treatment fits with other medicines you take. In particular, if your response to tadalafil is not what you hoped, we would rather help you troubleshoot than just send a repeat prescription.
Buy Tadalafil 20mg Tablets (Prescription Only) from Courier Pharmacy
Tadalafil 20mg is a prescription-only medicine (POM) supplied through our erectile dysfunction and men’s health consultation pathway at courierpharmacy.co.uk. So supply always follows a clinical assessment. In particular, new patients complete an ED consultation covering duration and severity of ED, cardiovascular history, current medicines, nitrate use, and lifestyle. However, established patients on stable tadalafil can complete a shorter reassessment.
The four steps
- Complete a quick online consultation covering your ED pattern, cardiovascular history, current medicines, nitrate use, and lifestyle.
- A UK prescriber (our Superintendent Pharmacist Shazlee Ahsan or a partner prescriber) reviews your answers.
- If tadalafil 20mg is clinically appropriate, a prescription is issued.
- We dispense and deliver discreetly to your door.
If tadalafil 20mg isn’t right for you
If our assessment shows a different approach fits your situation better, we’ll explain why and suggest the next best option. So this might mean:
- Tadalafil 10mg on-demand if you want to start at a lower dose or have mild-to-moderate kidney or liver impairment.
- Tadalafil 2.5mg or 5mg daily if you want continuous coverage or also have BPH symptoms.
- Sildenafil 50mg or 100mg if you prefer a shorter-acting PDE5 inhibitor (now OTC as Viagra Connect 50mg from a pharmacy consultation).
- Vardenafil (Levitra) if sildenafil has not worked and you prefer a shorter-acting option than tadalafil.
- Avanafil (Spedra) if a very fast onset (15 to 30 minutes) matters most.
- A GP or men’s health clinic referral if cardiovascular risk needs assessing first.
- A baseline bloods pack (lipids, HbA1c, testosterone) through your GP before starting, if you have not had these recently.
- A testosterone replacement discussion if blood tests confirm testosterone deficiency.
- Lifestyle support (weight loss, smoking cessation, cardiovascular fitness) if these are modifiable contributors.
- Non-PDE5 options (vacuum pump, intracavernosal injection, penile prosthesis) via urology if PDE5 inhibitors have not worked.
Above all, we won’t dispense a medicine that isn’t right for your situation. In short, honest guidance matters more than making the sale.
Frequently asked questions about tadalafil 20mg tablets
How quickly does tadalafil 20mg work?
Tadalafil can start working within 30 minutes of taking a tablet, with full effect built over 2 hours. However, it works best with proper sexual stimulation; it does not create arousal on its own.
How long does tadalafil 20mg last?
A single 20mg tablet can have effect for up to 36 hours. So during that window, sexual stimulation is more reliably followed by a satisfactory erection. In particular, this does not mean a continuous 36-hour erection, and sexual stimulation is still needed each time.
What is the difference between tadalafil and Cialis?
They are the same medicine. So Cialis is the branded version made by Lilly, and tadalafil is the generic name. In particular, generic tadalafil has been available in the UK since 2017, when the Cialis patent expired, at much lower cost.
Can I take tadalafil 20mg every day?
No, the 20mg tablet is for on-demand use only, maximum one in any 24 hours. So if you want continuous coverage, the daily low-dose form (tadalafil 2.5mg or 5mg once daily) is the right product, not the 20mg tablet.
Can I take tadalafil with alcohol?
Moderate alcohol is generally fine with tadalafil. However, heavy alcohol can impair erectile function in its own right and may add to the mild blood-pressure-lowering effect of tadalafil. So moderation is sensible.
Can I take tadalafil if I take blood pressure medicines?
Usually yes, provided your blood pressure is well controlled. However, nitrates (GTN, isosorbide mononitrate) are an absolute contraindication, and alpha-blockers (doxazosin, tamsulosin) need careful combination. So tell your prescriber about every blood pressure medicine you take.
What should I do if I get an erection lasting more than 4 hours?
Go to A&E immediately. So a prolonged erection (priapism) can permanently damage erectile tissue if not treated within hours. In particular, do not wait to see if it will settle on its own.
Can tadalafil cause heart attack or stroke?
Tadalafil does not cause heart attack or stroke on its own in men with normal cardiovascular status. However, sexual activity itself has a small cardiovascular risk, and tadalafil is contraindicated after recent heart attack or stroke and in severe heart failure. So a cardiovascular check before starting matters.
Can I take tadalafil with sildenafil?
No. Do not combine two PDE5 inhibitors. So this does not increase effectiveness, it just doubles side-effect risk. In particular, if one PDE5 inhibitor has not worked, switch rather than stack.
What if tadalafil 20mg does not work?
If tadalafil 20mg does not give adequate response over 4 to 8 attempts with proper sexual stimulation, discuss with your prescriber. So this may mean switching to another PDE5 inhibitor, considering the daily low-dose option, or looking at non-vascular contributors (psychological, hormonal, relationship). In particular, baseline bloods (lipids, HbA1c, testosterone) are worth checking if not done recently.
Can tadalafil help with premature ejaculation?
Tadalafil is not licensed for premature ejaculation. So dapoxetine (Priligy) is the licensed on-demand treatment for premature ejaculation. However, some men who have both ED and premature ejaculation find that treating the ED helps the whole picture.
Can women take tadalafil?
No. Tadalafil is not licensed for women. So it is not studied or approved for female sexual dysfunction.
Does tadalafil increase libido?
No. Tadalafil treats the physiological erection pathway, not sexual desire. So it does not increase libido or arousal. In particular, low libido often reflects low testosterone, relationship factors, stress, or other medicines, and these need their own assessment.
Can I drive after taking tadalafil?
For most men, yes. However, some patients experience dizziness or visual disturbance, which can affect driving. So do not drive until you know how tadalafil affects you.
Can I take tadalafil with testosterone replacement therapy?
Yes, this combination is common and well tolerated. So tadalafil and testosterone work on different parts of the sexual response and can be complementary. In particular, if ED has not responded to tadalafil alone and testosterone is low, adding TRT often improves response.
How do I know if my ED is physical or psychological?
A clue is whether you still get morning erections or erections during masturbation. So men who get these but struggle during partnered sex often have a significant psychological component. In particular, men who have lost all spontaneous erections usually have a more vascular or hormonal picture, and this is where PDE5 inhibitors tend to work best.
Is tadalafil available over the counter?
Yes, some strengths of tadalafil are available over the counter.
Can I take tadalafil if I have diabetes?
Yes, diabetes is one of the common causes of ED, and tadalafil is effective in diabetic men (though response rates are slightly lower than in non-diabetic men). So good diabetes control also helps erectile function in its own right.
What if I accidentally take two tablets?
Contact NHS 111 or your prescriber. So this does not increase effectiveness, it just increases side-effect risk (headache, flushing, muscle aches, hypotension). In particular, watch for any symptoms of low blood pressure (dizziness, fainting) and avoid any nitrates in the next 48 hours.
What is tadalafil 20mg?
Tadalafil 20mg is a prescription-only tablet used to treat erectile dysfunction in adult men. So it is the full-strength on-demand dose of tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor. In particular, tadalafil is the generic name for the drug originally sold as Cialis.
What is tadalafil 20mg used for?
Tadalafil 20mg is used for the on-demand treatment of erectile dysfunction in adult men. So one tablet is taken 30 minutes to 36 hours before anticipated sexual activity, maximum one tablet per 24 hours. In particular, the 20mg strength is not licensed for benign prostatic hyperplasia (BPH); the 5mg daily low-dose form is used for that.
How long does tadalafil 20mg take to work?
Tadalafil 20mg can start to work within 30 minutes, with full effect built over 2 hours. However, this is the time to a response with proper sexual stimulation; without stimulation, nothing happens. So take the tablet at least 30 minutes before anticipated sexual activity for the best result.
When to take tadalafil 20mg?
Take tadalafil 20mg 30 minutes to 36 hours before anticipated sexual activity. So the timing is flexible within that window. In particular, maximum one tablet in any 24-hour period, and sexual stimulation is still needed for an erection to happen.
How to use tadalafil 20mg?
Swallow one 20mg tablet whole with a glass of water, 30 minutes to 36 hours before anticipated sexual activity. So it can be taken with or without food. In particular, maximum one tablet in any 24-hour period, and sexual stimulation is still needed. Furthermore, do not combine tadalafil with any nitrate (GTN, isosorbide mononitrate, or recreational "poppers"), as this combination can cause fatal hypotension.
Where can I buy tadalafil 20mg?
Tadalafil 20mg is a prescription-only medicine (POM) in the UK, so it can only be dispensed by a UK-registered pharmacy against a valid prescription. So we supply tadalafil 20mg at Courier Pharmacy through our erectile dysfunction consultation pathway at courierpharmacy.co.uk. In particular, our Superintendent Pharmacist (or a partner prescriber) reviews each request before dispensing.
How many tadalafil 20mg can I take?
Maximum one 20mg tablet in any 24-hour period. So this is the licensed maximum on-demand dose. In particular, taking more does not improve response and increases side-effect risk (headache, flushing, muscle aches, hypotension). Furthermore, if 20mg does not give adequate response over several attempts, speak to your prescriber rather than taking a higher dose.
How often can you take tadalafil 20mg?
Up to one tablet in any 24-hour period, taken on demand. So the 20mg strength is for on-demand use, not for daily use. In particular, if you want continuous coverage or more than once-a-day use, the daily low-dose form (tadalafil 2.5mg or 5mg once daily) is a separate product and a better fit.
What happens if I take 20mg of tadalafil?
With sexual stimulation, 20mg of tadalafil improves blood flow to the penis and makes a satisfactory erection more likely for up to 36 hours. However, common side effects include headache, flushing, nasal congestion, mild indigestion, back pain, and muscle aches, which usually settle within a few hours. In particular, if nothing happens at all, remember that tadalafil is not an aphrodisiac; sexual stimulation is still needed.
What happens if I take two 20mg tadalafil tablets?
Taking two 20mg tablets does not improve response and significantly increases side-effect risk (severe headache, flushing, muscle aches, dizziness, hypotension). So if you have taken two tablets, contact NHS 111 for advice and avoid any nitrate (GTN, isosorbide mononitrate, "poppers") for at least 48 hours. In particular, go to A&E or call 999 if you develop chest pain, severe dizziness, fainting, or an erection lasting more than 4 hours.
Can I take 20mg tadalafil two days in a row?
You can take one 20mg tablet on consecutive days, provided you keep to the maximum of one tablet per 24-hour period. However, continuous daily use of the 20mg strength is not the licensed pattern. So if you anticipate wanting coverage on consecutive days regularly, discuss the daily low-dose form (tadalafil 2.5mg or 5mg once daily) with your prescriber. In particular, the daily low-dose option is designed for continuous use rather than on-demand use.
How long does 20mg tadalafil stay in your system?
Tadalafil has an elimination half-life of around 17.5 hours. So most of a 20mg dose is cleared from the body within 3 to 4 days. However, the clinically useful effect on erections lasts up to 36 hours after a single dose. In particular, do not take any nitrate within 48 hours of a tadalafil dose, as the interaction window extends beyond the useful-effect window.
How effective is tadalafil 20mg?
In the pivotal clinical trials, around 70 to 80 percent of men achieved successful intercourse on tadalafil 20mg, compared with about 30 to 40 percent on placebo. So it is one of the most effective pharmacological treatments for erectile dysfunction. However, response is individual, and tadalafil works best when there is a vascular (rather than purely psychological) basis to the ED. In particular, lifestyle factors (cardiovascular health, weight, smoking, alcohol, sleep) also affect how well it works.
Tadalafil 20mg how long does it last?
Tadalafil 20mg can have effect for up to 36 hours after a single dose. So this is the "weekend tablet" duration that distinguishes tadalafil from the shorter-acting PDE5 inhibitors. In particular, this does not mean a continuous 36-hour erection, it means that during this window sexual stimulation is more reliably followed by a satisfactory erection.
Tadalafil 20mg how long does it take to work?
Tadalafil 20mg can start to work within 30 minutes, with full effect built over 2 hours. So take the tablet at least 30 minutes before anticipated sexual activity. In particular, sexual stimulation is still needed; tadalafil amplifies the response, it does not create one.
Tadalafil 20mg what is it used for?
Tadalafil 20mg is used for the on-demand treatment of erectile dysfunction in adult men. So one tablet is taken 30 minutes to 36 hours before sexual activity, maximum one in 24 hours. In particular, the 20mg strength is not licensed for BPH; a separate 5mg daily low-dose form is used for that.
Tadalafil 20mg how long before it works?
Allow at least 30 minutes between taking a tadalafil 20mg tablet and anticipated sexual activity. So the effect builds further over the next 2 hours and continues up to 36 hours. In particular, there is no need to time the dose tightly to sex, which is one of tadalafil's practical advantages.
Tadalafil 20mg when to take?
Take tadalafil 20mg at least 30 minutes before anticipated sexual activity, up to 36 hours in advance. So the window is flexible. In particular, maximum one tablet per 24 hours, and sexual stimulation is still needed.
Where can I buy tadalafil 20mg?
Tadalafil 20mg is a UK prescription-only medicine, so it can only be dispensed by a UK-registered pharmacy against a valid prescription. So we supply tadalafil 20mg at Courier Pharmacy through our erectile dysfunction consultation at courierpharmacy.co.uk.
How long does 20mg of tadalafil last?
A 20mg dose of tadalafil can have effect for up to 36 hours. So this is substantially longer than sildenafil (4 to 6 hours) or vardenafil (4 to 5 hours). In particular, the long window is what gives tadalafil its "weekend tablet" nickname.
Tadalafil 20mg how long lasts?
Tadalafil 20mg lasts up to 36 hours after a single on-demand dose. So this long duration is one of its main selling points. However, this does not mean a 36-hour erection, it means the ability to achieve an erection with sexual stimulation stays improved during that window.
How long does 20mg tadalafil last?
A single 20mg tadalafil tablet lasts up to 36 hours. So the clinical effect extends well beyond the 17.5-hour elimination half-life of the drug itself. In particular, this is why one Friday evening dose can cover sexual activity on Saturday as well.
How long does 20mg tadalafil last? (quick answer)
Up to 36 hours. So this is the practical duration of useful effect from a single 20mg on-demand dose. In particular, no more than one tablet in any 24-hour period, even within that 36-hour window.
How long for 20mg tadalafil to work?
Allow at least 30 minutes between taking the tablet and sexual activity. So the full effect builds over 2 hours. In particular, the response depends on proper sexual stimulation; tadalafil does not create arousal on its own.
Tadalafil 20mg how long before sex?
Take tadalafil 20mg at least 30 minutes before anticipated sex. So the window of effect extends up to 36 hours. In particular, this means dosing does not need to be as tightly coupled to sexual timing as with sildenafil.
Tadalafil 20mg what is it?
Tadalafil 20mg is a prescription-only PDE5 inhibitor tablet used to treat erectile dysfunction in adult men. So it is the generic name for the drug originally marketed as Cialis. In particular, the 20mg strength is the full-strength on-demand dose.
How long does 20mg tadalafil take to work?
Around 30 minutes to a first response, with full effect built over 2 hours. So the start is slower than avanafil (15 to 30 minutes) but the overall window is much longer at up to 36 hours. In particular, taking it earlier rather than later gives the most reliable result.
How often can I take 20mg tadalafil?
Maximum one 20mg tablet in any 24-hour period, taken on demand. So the 20mg strength is not for daily use. In particular, if you want continuous coverage, the daily low-dose tadalafil 2.5mg or 5mg once daily is a separate product designed for that pattern.
Tadalafil 20mg how to use?
Swallow one 20mg tablet whole with water, 30 minutes to 36 hours before anticipated sexual activity. So it can be taken with or without food. In particular, maximum one per 24 hours, and sexual stimulation is still needed. Furthermore, do not combine with any nitrate (GTN, isosorbide mononitrate, "poppers"), as this combination can be fatal.
How long for tadalafil 20mg to work?
Allow at least 30 minutes before sex, with full effect reached by 2 hours. So the response depends on sexual stimulation during the active window. In particular, the window stays open for up to 36 hours after a single dose.
Tadalafil 20mg last how long?
A single on-demand 20mg tadalafil dose lasts up to 36 hours. So this is longer than any other oral PDE5 inhibitor used in the UK. In particular, the long duration suits men who prefer spontaneity rather than tight sex-dosing coupling.
How long does 20mg of tadalafil work?
A 20mg tadalafil dose remains clinically effective for up to 36 hours. So within that window, sexual stimulation is more likely to produce a satisfactory erection. In particular, the effect fades gradually over that period rather than cutting off sharply.
How fast does tadalafil 20mg work?
Tadalafil 20mg can start to work within 30 minutes of taking the tablet. However, avanafil (Spedra) is faster (15 to 30 minutes). So if speed of onset is the priority, avanafil may fit better; if duration is the priority, tadalafil wins.
How long does it take tadalafil 20mg to work?
Around 30 minutes to a first response, with full effect by 2 hours after the dose. So this is a slightly slower onset than sildenafil for some men but with a far longer window of action. In particular, the longer window often outweighs the slightly slower start for men who want flexibility.
How often can you take 20mg of tadalafil?
Up to one 20mg tablet in any 24-hour period, taken on demand. So the 20mg strength is on-demand only. In particular, if you want continuous coverage or sex on consecutive days regularly, the daily low-dose form (2.5mg or 5mg once daily) is a separate product and the right fit.
When to take tadalafil 20mg?
Take tadalafil 20mg at least 30 minutes before anticipated sexual activity, and up to 36 hours in advance. So the dosing window is wide. In particular, maximum one tablet per 24 hours, and sexual stimulation is still needed.
How long does 20mg of tadalafil take to work?
About 30 minutes to a first response, with full effect built by 2 hours. So allow at least 30 minutes between the tablet and sex. In particular, taking it on an empty stomach or a full stomach makes very little difference for tadalafil, unlike sildenafil.
How long does it take for 20mg tadalafil to work?
30 minutes to a first response and up to 2 hours to peak effect. So the full 36-hour window opens after the first 30 to 120 minutes. In particular, if the first attempt at sex happens within that window, the response is usually at its most reliable.
What happens if I take two 20mg tadalafil?
Taking two 20mg tablets does not improve the response and significantly increases side-effect risk (severe headache, flushing, muscle aches, dizziness, hypotension). So contact NHS 111 for advice and avoid any nitrate for at least 48 hours. In particular, go to A&E or call 999 if you develop chest pain, severe dizziness, fainting, or an erection lasting more than 4 hours.
Cialis tadalafil 20mg how to use?
Cialis is the brand name for tadalafil; the usage is identical. So swallow one 20mg Cialis tablet whole with water, 30 minutes to 36 hours before anticipated sexual activity. In particular, maximum one tablet per 24 hours, and never combine with nitrates or riociguat.
How long does 20mg of tadalafil work for? (quick answer)
Up to 36 hours per on-demand dose. So the clinical effect persists well after the drug levels have fallen. In particular, this is one of tadalafil's main differentiators from sildenafil and vardenafil.
How often can you take tadalafil 20mg?
Maximum one 20mg tablet in any 24-hour period. So this is the licensed on-demand pattern. In particular, continuous daily use at the 20mg strength is not the licensed pattern; use the daily low-dose form instead if continuous coverage is wanted.
How many 20mg tadalafil can I take?
One 20mg tablet per 24-hour period. So this is the maximum on-demand dose. In particular, taking more does not improve response and raises the risk of headache, muscle aches, hypotension, and (rarely) priapism or visual effects.
Tadalafil 20mg how often to take?
On demand, up to one 20mg tablet per 24-hour period. So the 20mg strength is not scheduled daily; it is used when sexual activity is anticipated. In particular, patients wanting continuous coverage move to the daily low-dose option (2.5mg or 5mg once daily).
How long does the effect of tadalafil 20mg last?
Up to 36 hours after a single on-demand dose. So this is longer than any other oral PDE5 inhibitor in current UK use. In particular, this long window is one of the main reasons patients and partners choose tadalafil.
How often can you take 20mg tadalafil?
Up to one 20mg tablet in any 24-hour period, taken on demand. So the 20mg strength is for on-demand use. In particular, continuous daily use at 20mg is not the licensed pattern; the daily low-dose form (2.5mg or 5mg once daily) is the right product for continuous coverage.
How long does it take for tadalafil 20mg to work?
Around 30 minutes to a first response, up to 2 hours to peak. So take the tablet at least 30 minutes before anticipated sex. In particular, the overall window stays open for up to 36 hours.
Where to buy tadalafil 20mg?
Tadalafil 20mg is prescription-only in the UK, so it can only be dispensed by a UK-registered pharmacy against a valid prescription. So Courier Pharmacy supplies tadalafil 20mg through our erectile dysfunction consultation at courierpharmacy.co.uk, with discreet UK delivery. In particular, if you already have a GP prescription, we can also dispense against that.
What are tadalafil 20mg tablets?
Tadalafil 20mg tablets are a prescription-only PDE5 inhibitor used to treat erectile dysfunction in adult men. So each film-coated tablet contains 20mg of tadalafil, the active ingredient also sold under the brand name Cialis. In particular, the 20mg strength is the full-strength on-demand dose.
How to take tadalafil 20mg?
Swallow one 20mg tablet whole with a glass of water, 30 minutes to 36 hours before anticipated sexual activity. So it can be taken with or without food. In particular, maximum one tablet per 24 hours, and sexual stimulation is still needed for an erection to happen.
ED as a cardiovascular signal
ED is often an early warning of cardiovascular disease, particularly in men under 60. So treating only the ED without checking cardiovascular risk is a missed opportunity. In particular, we routinely suggest baseline bloods (lipids, HbA1c, testosterone) for men with new ED who have not had these recently, and we flag when a GP conversation about statins or blood pressure makes sense.
Lifestyle changes that help ED
Several lifestyle changes have real evidence for improving erectile function: weight loss (particularly abdominal fat), regular aerobic exercise, stopping smoking, limiting alcohol, better sleep, and treating sleep apnoea. So medicines like tadalafil work better when the underlying vascular biology is being supported. In particular, improving these factors is also good for cardiovascular health as a whole.
Disclaimer
Disclaimer: This information is for education only and isn't a substitute for personal medical advice. Always follow your prescriber's instructions.
References
- National Institute for Health and Care Excellence (accessed 2026). Erectile dysfunction. Clinical Knowledge Summary. Available at: https://cks.nice.org.uk/topics/erectile-dysfunction/
- British National Formulary (accessed 2026). Tadalafil. Available at: https://bnf.nice.org.uk/drugs/tadalafil/
- Electronic Medicines Compendium (accessed 2026). Tadalafil 20mg film-coated tablets, Summary of Product Characteristics. Available at: https://www.medicines.org.uk/emc/product/9363/smpc
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