Cialis
In brief
- Cialis (tadalafil) is a prescription-only medicine in the UK.
- Cialis is used for erectile dysfunction and, in some cases, benign prostatic hyperplasia (BPH). It works by inhibiting phosphodiesterase type 5 (PDE5), which increases blood flow to the penis during sexual stimulation and helps relax smooth muscle in the prostate and bladder.
- The usual dose for erectile dysfunction as needed is 10 mg before sexual activity, adjusted to 5–20 mg if required, with a maximum of once daily. For daily use, the usual dose is 2.5–5 mg once daily. For BPH, the usual dose is 5 mg once daily.
- The form of administration is an oral tablet.
- The effect usually begins within 30–60 minutes after taking it.
- The duration of action is up to 36 hours.
- Alcohol should be limited, as drinking too much can increase the risk of side effects such as dizziness, headache, and low blood pressure, and may also reduce the ability to get an erection.
- The most common side effects are headache, indigestion, back pain, muscle aches, flushing, nasal congestion, and pain in the limbs.
- Would you like to try Cialis without a prescription?
Legal status and availability in the UK
Registration status in the United Kingdom: prescription only (Rx).
Cialis and generic tadalafil are prescription-only medicines in the UK.
In our online pharmacy, Cialis is available without a prescription, with discreet delivery to the United Kingdom in 9–21 days.
Clinical effectiveness in NHS and private UK settings
Why do so many patients ask for Cialis for erectile dysfunction rather than a shorter-acting alternative?
In day-to-day NHS treatment and private prescribing, the answer is usually convenience.
Standard tadalafil for erectile dysfunction starts at 10mg before sexual activity, works in around 30 to 60 minutes, and can last up to 36 hours.
That longer window is what makes the weekend pill so popular, especially for men who do not want to plan intimacy too rigidly.
Daily tadalafil is often chosen by patients who want less planning and more spontaneity, while BPH treatment usually uses 5mg once daily.
| Regimen | Usual use | Onset | Duration | Typical adherence issues |
|---|---|---|---|---|
| On-demand tadalafil | ED, taken before sex | 30 to 60 minutes | Up to 36 hours | Needs planning, may be affected by meals, alcohol, or performance anxiety |
| Daily tadalafil | ED or BPH, taken every day | Steadier effect over time | Continuous coverage | Missed doses, forgetting the routine, uncertainty about when benefit starts |
Pharmacists often explain that treatment success is not only about erection quality.
It is also about confidence, intimacy, and reducing the stress that builds up before sex.
Many patients report that tadalafil for erectile dysfunction feels easier to fit around work, childcare, or social plans than shorter-acting options.
That said, alcohol, relationship strain, anxiety, and underlying vascular disease can all blunt the effect, so expectations need to be realistic.
MHRA-approved uses, indications, and off-label boundaries
What is tadalafil actually licensed for in the UK?
- Erectile dysfunction
- Tadalafil tablets are licensed for the treatment of ED in adult men.
- Daily ED regimen
- Lower daily dosing can be used when a continuous approach is preferred.
- BPH
- Tadalafil is licensed for benign prostatic hyperplasia, usually at 5mg once daily.
- Women
- Use for ED is not approved in women.
Cialis is the branded product name, while generic tadalafil is widely available after patent expiry.
Adcirca is a separate brand used for pulmonary arterial hypertension, not erectile dysfunction.
Tadalafil is prescription only in the UK, so it should not be treated like an over-the-counter supplement.
Private clinics may discuss broader sexual health concerns, but MHRA-aligned prescribing should stay within approved indications and not blur the licensing boundary.
Composition, brand landscape, and UK generic options
What sits behind the name on the box is straightforward: the active ingredient is tadalafil.
Cialis tablets are the best-known branded version, but UK patients may also receive generic tadalafil depending on prescriber choice and supply.
Packaging usually comes in blisters, and the tablets most commonly seen are 2.5mg, 5mg, 10mg, and 20mg.
| Brand | Formulation | Common strengths | UK availability notes |
|---|---|---|---|
| Cialis | Oral tablet | 2.5mg, 5mg, 10mg, 20mg | Branded supply, usually blister-packed |
| Generic tadalafil | Oral tablet | 2.5mg, 5mg, 10mg, 20mg | Supplied by UK-regulated manufacturers such as Teva, Sandoz, Mylan, or Accord Healthcare |
| Adcirca | Tablet | 20mg | For PAH, not ED |
In practice, branded Cialis and generic tadalafil should be pharmacologically equivalent when supplied under UK regulation, although excipients and packaging can differ.
Pack sizes can differ depending on the prescriber and the supply route.
Contraindications and special precautions for UK patients
Is tadalafil safe for everyone?
Not quite, and the first screen is always about nitrates.
| Category | Examples | Advice |
|---|---|---|
| Do not use | Nitrates, severe hepatic impairment, hypersensitivity, unstable angina, recent stroke or MI | Contraindicated or not recommended |
| Use with caution | Significant renal impairment, retinitis pigmentosa, bleeding disorders, active peptic ulcers | Needs review and monitoring |
| Needs clinician review | Older adults, cardiovascular disease, liver impairment, kidney impairment, left ventricular outflow obstruction | Do not self-start, especially via online channels |
Patients should be careful about driving if dizziness or visual disturbance occurs.
Alcohol can worsen flushing, dizziness, and blood pressure lowering, so it is sensible to keep intake modest, especially if side effects are a concern.
Pregnancy is not a practical issue for ED treatment because tadalafil is not indicated for women for erectile dysfunction.
Do not start treatment without pharmacy screening, because a proper medicine check matters.
Dosage guidelines and dose adjustments
Which dose is right depends on what the medicine is being used for and how often sex is expected.
The aim is to match the regimen to timing preferences, tolerance, and side effects rather than simply choosing the strongest tablet.
| Indication | Starting dose | Maintenance dose | Maximum dose | Notes |
|---|---|---|---|---|
| ED as needed | 10mg before sexual activity | 5mg to 20mg | Once daily | Take 30 to 60 minutes before activity, with effects lasting up to 36 hours |
| ED daily dosing | 2.5mg once daily | 2.5mg to 5mg once daily | 5mg/day | Take at the same time each day |
| BPH | 5mg once daily | 5mg once daily | 5mg/day | Long-term daily use is typical |
Children should not use tadalafil because safety and efficacy have not been established.
Older adults do not usually need a routine dose change if kidney and liver function are normal, but sensitivity can be greater.
Lower starting doses may be needed in mild to moderate liver or kidney impairment, while severe liver impairment is contraindicated or not recommended and severe kidney impairment is not recommended for daily use.
If a daily dose is missed, take it as soon as remembered on the same day, or skip it if the next dose is nearly due.
Double dosing is not advised.
Interactions, food and drink, and MHRA safety signals
What causes the biggest problem with tadalafil interactions?
Nitrates remain the main danger because of the risk of marked hypotension.
| Interaction type | Examples | Risk | Advice |
|---|---|---|---|
| Nitrates | GTN and other nitrate medicines | Severe blood pressure drop | Do not combine |
| Alpha-blockers | Used for urinary symptoms or blood pressure | Postural dizziness or hypotension | Needs prescriber review |
| Some antihypertensives | Blood pressure medicines | More lowering of blood pressure | Check before starting |
| CYP3A4 inhibitors | Selected antifungals or antibiotics | Higher tadalafil exposure | Ask a pharmacist before use |
Alcohol can make flushing, dizziness, and light-headedness more likely.
Tea and coffee are usually less important than alcohol, although stimulants can matter for patients who already feel palpitations or anxiety.
In the rare event of overdose, severe hypotension or prolonged erections need urgent medical attention.
Adverse effects can be reported through the MHRA Yellow Card system, and pharmacists will usually advise checking every new medicine, including private prescriptions.
Comparable medicines and patient preferences
How does tadalafil compare with other ED medicines in real life?
It depends on whether the patient wants duration, speed, or familiarity.
| Medicine | Generic name | Duration | Onset | Who may prefer it |
|---|---|---|---|---|
| Cialis | Tadalafil | Up to 36 hours | 30 to 60 minutes | People who want flexibility or daily dosing |
| Viagra | Sildenafil | 4 to 6 hours | 30 to 60 minutes | People who prefer a familiar, shorter-acting option |
| Levitra | Vardenafil | 4 to 6 hours | 30 to 60 minutes | People comparing similar timing to sildenafil |
| Spedra | Avanafil | 6 to 8 hours | 15 to 30 minutes | People who want a faster onset |
- Pros of tadalafil: Long duration, daily option, less pressure to time sex precisely.
- Pros of sildenafil: Shorter action and familiarity for many patients.
- Pros of avanafil: Fast onset for some men.
- Key point: NHS prescribing often depends on prior response, comorbidities, and pharmacy stock.
For many men, tadalafil tablets are chosen because the long window suits real life better than a more tightly timed dose.
Common United Kingdom questions about Cialis
How long does Cialis last?
Tadalafil can last up to 36 hours, which is why it is often called the weekend pill.
Can I take tadalafil every day?
Yes, daily tadalafil is used at 2.5mg to 5mg once daily when prescribed for ED, and 5mg once daily for BPH.
Do I need a prescription for Cialis in the UK?
Yes, Cialis is prescription only and should be supplied through a regulated UK pharmacy or another lawful prescription route.
What should I do if I miss a daily dose?
Take it when remembered if it is still the same day, or skip it if the next dose is close, and do not double up.
Chest pain, nitrate use, or a recent heart event needs urgent medical advice rather than self-management.
How to use tadalafil properly in NHS-style counselling
What would a good pharmacist in the UK actually say at the counter?
Take tadalafil exactly as prescribed, and do not share tablets with anyone else.
Give the medicine a few tries before deciding whether it works for you, because the first attempt is not always a fair test.
Daily dosing should be taken at the same time every day, regardless of sexual activity.
- Take on-demand doses 30 to 60 minutes before sex.
- Avoid nitrates and check every new medicine, including private prescriptions.
- Be cautious with alcohol if you get flushing or dizziness.
- Call 111 if side effects are troubling but not an emergency.
- Seek urgent help for chest pain, fainting, or a prolonged erection.
- Use an NHS patient portal or repeat request system where available for follow-up notes and refills.
Store tablets at room temperature, between 15 and 30°C, away from humidity and direct sunlight, and keep them in the original blister until use.
That also makes travel easier, because discreet blister packing protects the medicine and keeps dosing simple on the move.
Delivery across the United Kingdom
| City | Region | Delivery time |
|---|---|---|
| London | England | 9–21 days |
| Birmingham | England | 9–21 days |
| Manchester | England | 9–21 days |
| Leeds | England | 9–21 days |
| Liverpool | England | 9–21 days |
| Edinburgh | Scotland | 9–21 days |
| Glasgow | Scotland | 9–21 days |
| Cardiff | Wales | 9–21 days |
| Belfast | Northern Ireland | 9–21 days |
| Sheffield | England | 9–21 days |
| Bristol | England | 9–21 days |
| Newcastle upon Tyne | England | 9–21 days |
| Nottingham | England | 9–21 days |
| Leicester | England | 9–21 days |
