Tadalafil Tablets 10mg & 20mg

The most common side effects are headache, flushing, a blocked nose, indigestion, back pain and muscle aches. These are usually mild and short-lived. Get emergency help if an erection lasts more than 4 hours. Stop tadalafil and get medical help immediately if you have sudden loss of vision or hearing. If you get chest pain during or after sex, stop, get into a semi-sitting position and call 999 – do not use a GTN spray or any nitrate for the pain.

Do not take tadalafil if you are allergic to it, use any nitrate medicine, nicorandil or poppers, or take riociguat. It is also not suitable if a doctor has told you to avoid sex because of a heart problem, or if you have had a heart attack in the last 90 days, have angina that is unstable or comes on during sex, have had heart failure that limited your activity in the last 6 months, have an uncontrolled heart rhythm problem, have low blood pressure or uncontrolled high blood pressure, or have had a stroke in the last 6 months. Do not take it if you have lost sight in one eye from NAION. Your prescriber will also check for conditions that need caution, such as Peyronie's disease, sickle cell anaemia, leukaemia, multiple myeloma, an inherited eye condition such as retinitis pigmentosa, or severe kidney or liver problems.

Tadalafil must never be taken with nitrates, nicorandil, poppers or riociguat, or with another ED medicine such as sildenafil. Tadalafil with doxazosin is not recommended, and other alpha-blockers such as tamsulosin need caution. Tell your prescriber if you take medicines such as ritonavir, ketoconazole, itraconazole, clarithromycin or erythromycin, which can raise tadalafil levels, or rifampicin, which can make it less effective. Do not drink grapefruit juice while taking tadalafil, and avoid drinking a lot of alcohol, which can make you dizzy and make it harder to get an erection. Our guide to tadalafil drug interactions covers more medicines.

The generic tadalafil 10mg and 20mg tablets we supply are prescription-only, so you need an online consultation and a prescription first. The exception is tadalafil 10mg sold as a pharmacy medicine (such as Cialis Together), which men aged 18 and over can buy from a pharmacy after speaking with a pharmacist. Never buy tadalafil from a website that does not ask about your health – counterfeit ED medicines can contain the wrong dose, the wrong ingredient or contaminants.

Most men start on 10mg, taken as needed at least 30 minutes before sex. 20mg may be prescribed if 10mg does not work well enough. If you have severe kidney problems or liver problems, 10mg is usually the highest dose. If you take certain medicines that raise tadalafil levels, your prescriber may recommend a lower dose. Your prescriber will recommend a strength based on your consultation answers. Do not change your dose without speaking to a prescriber or pharmacist.

It is safe when you use a GPhC-registered pharmacy and a UK-registered prescriber. It is not safe to buy from sites that sell without a consultation or that ship unlicensed products from overseas. Those tablets frequently contain the wrong dose or the wrong drug altogether, and no one has checked whether the medicine is safe alongside anything else you take. See the dangers of Kamagra.”

Yes. Your consultation is confidential and reviewed only by the prescribing clinician. Your order is sent in plain, unbranded packaging with nothing on the outside identifying the medicine or Access Doctor.

 At Access Doctor, tadalafil 20mg costs £12.99 for 4 tablets, £21.99 for 8, £29.99 for 12 and £35.99 for 16 – the 16-tablet pack is the lowest price per tablet at £2.25. Every price includes your online consultation and private prescription. 20mg is the highest on-demand strength and is usually prescribed for men who find 10mg does not work well enough.

One dose of tadalafil can help you get an erection for up to 36 hours, and it can be taken with or without food. You still need to be sexually aroused for it to work. Do not take more than one dose in 24 hours. If it has not worked after several attempts, speak to your prescriber – a different dose or treatment may suit you better.

 The 10mg and 20mg tablets on this page are for use as needed before sex and are not recommended for continuous daily use. If you have sex at least twice a week and would rather not plan around a tablet, a lower daily dose such as Cialis Once a Day (2.5mg or 5mg) may suit you better – see our daily tadalafil guide.

 Yes. Your GP can prescribe generic tadalafil on the NHS for erectile dysfunction after checking your general health. In England, the old restrictions that limited it to men with certain medical conditions were removed on 1 October 2025. Some areas still offer sildenafil first. Branded Cialis is still restricted on the NHS. Generic tadalafil is also a routine NHS option in Scotland, but in Wales it is still limited to men who meet certain criteria, and the rules in Northern Ireland may differ, so ask your GP. NHS prescription charges apply in England unless you are exempt; prescriptions are free in Scotland, Wales and Northern Ireland. The Welsh Government is consulting until 17 December 2026 on removing this restriction.

At Access Doctor, tadalafil 10mg costs £11.99 for 4 tablets, £20.99 for 8, £28.99 for 12 and £34.99 for 16. The 16-tablet pack is the lowest price per tablet, at £2.19. Every price includes your online consultation and private prescription. 10mg is the usual starting dose for most men.

Take it at least 30 minutes before sex. It can take up to about 2 hours to work, and in clinical studies some men responded within 16 minutes. Food doesn’t slow it down. Once it’s working, it can help for up to 36 hours, but only if you’re sexually aroused.

Both treat erectile dysfunction in the same way. Tadalafil can work for up to 36 hours, and food doesn’t affect it. Sildenafil works for around 4 to 5 hours and can be slowed by a heavy meal, but it costs less per tablet. Neither works without sexual arousal. See our tadalafil vs sildenafil guide.

Yes. Generic Cialis is tadalafil, the same active ingredient in the same strengths, and it costs much less than branded Cialis. Generic tadalafil 10mg and 20mg tablets are prescription-only, so you need a consultation and a prescription first. At Access Doctor, both are included in the price, from £11.99.