Tadalafil 10mg or 20mg Tablets – 4 or 8 Tablets

Tadalafil is a prescription-only medicine for erectile dysfunction (ED) in men aged 18 and over. Like sildenafil, it is a PDE5 inhibitor that helps blood flow into the penis when you are sexually aroused, but its effect lasts longer — up to about 36 hours. This product is the 10mg or 20mg tablet taken when needed, supplied under our Patient Group Direction (PGD) only after a pharmacist has assessed your health, heart risk and current medicines and confirmed that it is suitable for you.

How to access this medicine

1. Choose and pay. Select the strength and pack and check out.
2. Online health questionnaire and ID check. After payment you complete a health questionnaire, including a blood pressure reading taken in the last 3 months with a photo of the monitor display. You confirm your identity by uploading photo ID or showing it on a video call. If you do not have a recent reading, you can have your blood pressure checked free of charge at our Holborn pharmacy.
3. Pharmacist speaks with you. A GPhC-registered pharmacist contacts you by phone or video to go through your heart health, current medicines and answers, and confirms whether this medicine is suitable.
4. If suitable, supplied the same day. Orders approved by 3pm on a weekday are posted the same day (see our shipping policy), or you can collect from Holborn once approved. If the medicine is not suitable — including when the pharmacist gives advice only — you receive a full refund.

There is no separate consultation fee. If the medicine you chose is not suitable, the pharmacist may suggest another option.

About this medicine

We also stock tadalafil 10mg as a pharmacy (P) medicine, sold after you answer the pharmacist's questions. The pharmacist can help you decide which route suits you.

Dosage

• Usual starting dose: one 10mg tablet with water at least 30 minutes before sexual activity; the effect can last up to about 36 hours
• No more than one dose in 24 hours. Do not take it every day — the 10mg and 20mg tablets are for use when needed
• Can be taken with or without food. Sexual stimulation is needed for it to work
• If 10mg is well tolerated but not effective enough, the pharmacist may increase the dose to 20mg (the maximum)

You choose a strength when you order, but the pharmacist decides which strength is suitable for you after the assessment. If a different strength would be more suitable, the pharmacist will contact you before anything is supplied.

Under our PGD a supply is limited to a small number of doses at a time (4 or 8 tablets). Further supplies follow a check with the pharmacist on how well it worked and any side effects. Men who expect to need treatment at least twice a week can ask the pharmacist about a low daily dose of tadalafil instead.

Warnings and who should not take this medicine

• Women and anyone under 18
• Anyone using nitrates (such as GTN spray, isosorbide mononitrate or dinitrate), nitric oxide donors such as amyl nitrite ("poppers"), or riociguat — the combination can cause a dangerous fall in blood pressure
• Anyone already taking another erectile dysfunction medicine
• Chest pain at rest or on exertion, unexplained breathlessness, fainting, unstable angina or severe heart failure, or anyone not fit enough for sexual activity — you should be able to climb two flights of stairs without chest pain, breathlessness or dizziness
• A heart attack, stroke or mini-stroke (TIA) in the last 6 months
• Very low blood pressure (below 90/50) or uncontrolled high blood pressure
• Severe liver or kidney disease
• Retinitis pigmentosa, or previous sudden sight loss caused by NAION
• A history of priapism, or sickle cell anaemia, multiple myeloma or leukaemia
• A significant penile deformity, such as Peyronie's disease

Tell the pharmacist about every medicine you take. Extra care is needed with alpha-blockers (such as doxazosin or tamsulosin), blood pressure medicines, and some antifungal, antibiotic and HIV medicines. Diabetes, high cholesterol, smoking and heavy drinking can be linked to ED and the pharmacist may suggest you also see your GP.

Possible side effects

The most common are headache, back pain, muscle aches, flushing, a blocked nose and indigestion. Back and muscle pain usually come on 12 to 24 hours after a dose and pass within two days. Do not drive if you feel dizzy or your vision is affected.

Stop taking it and get urgent medical help if you have chest pain during or after sex (call 999), an erection lasting more than 4 hours, sudden loss or change of vision or hearing, or swelling of the face, lips or throat.

More information about the service and other options is on our erectile dysfunction treatment page.

Regulatory information

• Legal status: Prescription-only medicine (POM), supplied under a Patient Group Direction after pharmacist assessment
• Pharmacy: Ways Pharmacy, 77 Southampton Row, London WC1B 4ET · GPhC-registered premises 9012227
• Patient information leaflet: electronic Medicines Compendium (emc)
• Report suspected side effects through the MHRA Yellow Card Scheme

This page gives factual information about a prescription-only medicine and is not an advertisement to the public. It is supplied only after a pharmacist has assessed that it is suitable for you.