Tadalafil for erectile dysfunction - Cialis

Tadalafil is for the treatment of adult men with erectile dysfunction.

Take a tablet about 30 minutes before you plan to have sex. Do NOT take more than one dose in 24 hours.

When you collect your prescriptions, check the brand and strength of the tablets. If the appearance is not the same as usual, speak with your doctor or pharmacist.

About tadalafil

Type of medicine Phosphodiesterase type-5 inhibitor
Used for Erectile dysfunction in adult men
Also called Cialis®
Available as Tablets

Erectile dysfunction (sometimes called impotence) means that you cannot get or maintain a proper erection. There are several causes, the most common being due to a narrowing of the arteries that take blood to the penis.

Tadalafil works by preventing the action of a chemical in your body, called phosphodiesterase type-5. This helps to relax (widen) blood vessels and improves the flow of blood to the penis following sexual stimulation. This helps to maintain an erection.

Tadalafil is available on prescription, but it is only prescribed on the NHS for men with erectile dysfunction resulting from certain medical conditions. If you are given a private (non-NHS) prescription, you will be asked to pay for the tablets.

Another brand of tadalafil tablets called Adcirca® is used to treat a completely different condition called pulmonary arterial hypertension - see the separate medicine leaflet called Tadalafil for pulmonary hypertension if you have been prescribed this brand of tadalafil tablets.

Before taking tadalafil

Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking tadalafil it is important that your doctor or pharmacist knows:

  • If you have any disease, injury or deformity of your penis.
  • If you have a heart condition, or blood vessel disease.
  • If you have had an eye condition causing loss of vision.
  • If you have low blood pressure or angina.
  • If you have liver or kidney problems.
  • If you have had a stroke or a heart attack.
  • If you have sickle cell disease.
  • If you have ever had bone marrow cancer or leukaemia.
  • If you are taking or using any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines, and recreational drugs.
  • If you have ever had an allergic reaction to a medicine.

How to take tadalafil

  • Before you take tadalafil, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about the tablets, and also a full list of the side-effects you may experience.
  • Take tadalafil exactly as your doctor has told you. It is intended to be taken before sexual activity - it is NOT for continuous daily use. You should take one tablet at least half an hour before you plan to have sex (it may still be effective up to 36 hours after taking the tablet). It is not important whether you take the tablet before or after food.
  • There are four strengths of tadalafil tablets. It is likely that you will be given the 10 mg strength tablets to begin with, but this may be changed subsequently depending upon how you react. Each time you collect a prescription, check to make sure it contains the strength of tablet you are expecting.
  • Do not take tadalafil more frequently than once a day.

Getting the most from your treatment

  • You and your partner will still need to engage in foreplay, just as you would if you were not taking a medicine for erectile dysfunction. Tadalafil will not cause an erection unless you are sexually aroused.
  • Do not drink large amounts of alcohol before you plan to take tadalafil. Drinking too much alcohol can reduce your ability to get an erection and this may prevent you from getting the maximum benefit from these tablets.
  • It is recommended that you do not drink grapefruit juice with tadalafil. This is because there is a chemical in grapefruit juice which may increase the amount of tadalafil in your bloodstream. This may make side-effects more likely.
  • Keep your regular appointments with your doctor so your progress can be monitored. If you feel the tablets are too strong for you, discuss this with your doctor. If you do not get an erection after taking tadalafil, or if it does not last long enough for you to have sex, discuss this with your doctor - do not take more tablets than you have been told to.
  • You should not take tadalafil if you are using any other products or taking any other medicines to treat erectile dysfunction.

Can tadalafil cause problems?

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. These usually improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following side-effects continue or become troublesome.

Common tadalafil side-effects - these affect less than 1 in 10 people who take this medicine What can I do if I experience this?
Headache, muscle aches and pains Ask your pharmacist to recommend a suitable painkiller
Blocked nose This should soon pass, but in the meantime inhaling steam may help
Indigestion, acid reflux Ask your pharmacist to recommend a suitable indigestion remedy

Important: if your erection lasts for longer than four hours, or if you get chest pains or a sudden loss of vision, contact a doctor for medical attention straightaway.

If you experience any other symptoms which you think may be due to this medicine, discuss them with your doctor or pharmacist.

How to store tadalafil

  • Keep all medicines out of the reach and sight of children.
  • Store in a cool, dry place, away from direct heat and light.