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Common questions about ticagrelor - Brand name: Brilique

How does ticagrelor work?

Ticagrelor slows the blood's clotting action by making platelets less sticky. Platelets are blood cells that stick together to block cuts and breaks in blood vessels.

If you're at risk of heart attack or stroke, platelets can stick together inside already narrowed blood vessels to form a clot. The clot can stop blood flowing to the heart or brain and cause a heart attack or stroke.

If you take it every day, ticagrelor stops platelets from clumping together to form unwanted blood clots. This helps to prevent heart attacks and strokes.

When will I feel better?

Ticagrelor works within 30 minutes of taking your first dose of 180mg.

You may not feel any different after you start taking ticagrelor. However, this does not mean the medicine is not working.

Carry on taking ticagrelor even if you feel well, as you'll still be getting the benefits.

Are there any long-term side effects?

Ticagrelor is generally safe to take for a long time. In fact, it works best if you take it for many months or even several years.

If you're at risk of getting a stomach ulcer, your doctor may prescribe a medicine to help protect your stomach while you're taking ticagrelor.

What will happen if I stop taking it?

Do not stop taking ticagrelor without talking to your doctor.

If you stop taking ticagrelor, your blood will start clotting at the rate it did before you started taking it. This usually happens within 2 days of stopping the medicine.

This means you may be at increased risk of serious problems like heart attacks or strokes.

Are there any other similar medicines to prevent blood clots?

Other antiplatelet medicines include low-dose aspirin, clopidogrel and dipyridamole.

Anticoagulant medicines such as apixaban, dabigatran, edoxaban, rivaroxaban and warfarin are also prescribed to help prevent blood clots.

Not all medicines that prevent blood clots are suitable for everyone.

Talk to your doctor or pharmacist to find out why you have been recommended a particular medicine.

How does ticagrelor compare with other antiplatelet medicines like clopidogrel?

Both ticagrelor and clopidogrel work to:

  • help prevent blood clots
  • help prevent future heart attacks if you've already had a heart attack

But ticagrelor is not approved for preventing further strokes if you've already had a stroke. In this case, your doctor may prescribe clopidogrel instead.

You'll usually take ticagrelor twice a day. Clopidogrel is taken once a day.

Clopidogrel may be less likely to cause bleeding than ticagrelor.

Will I need to stop taking ticagrelor before having surgery or dental treatment?

Because of the risk of bleeding, you may need to stop taking ticagrelor for a short time before having surgery or dental work.

Do not stop taking ticagrelor without first talking to your doctor or dentist. They'll tell you if you need to stop taking ticagrelor before a procedure.

Can I have vaccinations?

Yes, you can have vaccinations while taking ticagrelor.

It's a good idea to mention to the doctor or nurse that you're taking an antiplatelet medicine.

Will it affect my periods?

While taking ticagrelor some women may notice vaginal bleeding that's heavier than their normal period, or happens at different times.

Speak to your doctor if you're worried, or if you have postmenopausal bleeding.

Will it affect my contraception?

Ticagrelor does not affect any type of contraception from working, including the combined contraceptive pill, progestogen-only pill and emergency contraception.

However, if ticagrelor makes you have severe diarrhoea for more than 24 hours, your contraceptive pills may not protect you from pregnancy. Look on the pill packet to find out what to do.

Find out more:

Can I drive or ride a bike?

Most people can drive or cycle while taking ticagrelor.

But if ticagrelor makes you feel dizzy, do not drive, cycle or use machinery or tools until you feel better.

It's an offence to drive a car if your ability to drive safely is affected. It's your responsibility to decide if it's safe to drive. If you're in any doubt, do not drive.

Talk to your doctor or pharmacist if you're unsure whether it's safe for you to drive while taking ticagrelor. GOV.UK has more information on the law on drugs and driving.

Can I drink alcohol while taking ticagrelor?

Yes, you can drink alcohol while taking ticagrelor as long as you stick to the national guidelines of no more than 14 units a week for men and women.

Drinking too much alcohol while you're taking ticagrelor can irritate your stomach. This can increase your risk of getting a stomach ulcer.

Is there any food or drink I need to avoid?

Do not drink grapefruit juice while taking ticagrelor. Grapefruit juice may increase the effect of your medicine, making you bleed more easily.

Can lifestyle changes help?

If you've been prescribed ticagrelor, you can also boost your health by making some key lifestyle changes.

  • Quit smoking – smoking increases your heart rate and blood pressure. Quitting smoking will cut your risk of heart attack and stroke. Try to avoid secondhand smoke, too.
  • Cut down on alcohol – try to keep to the recommended guidelines of no more than 14 units of alcohol a week, spread across 3 or more days.
  • Exercise – regular exercise keeps your heart and blood vessels in good condition. It does not need to be too energetic. Walking every day is enough.
  • Eat well – aim to eat a diet that includes plenty of fruit and vegetables, wholegrains, fat-free or low-fat dairy products, and lean proteins. It's a good idea to limit the amount of salt in your diet too. Aim for no more than 6g of salt a day.
  • Manage stress – when you're anxious or upset, your heart beats faster, you breathe more heavily, and your blood pressure often goes up. This raises your risk of heart attack and stroke. Find ways to reduce stress in your life. To give your heart a rest, try napping or putting your feet up when possible. Spend time with friends and family to be social and help reduce stress.
  • Vaccinations – if you have heart failure, it's recommended that you have the flu vaccine every year and the pneumococcal vaccine, RSV vaccine and COVID-19 vaccine as recommended by your GP. Ask your doctor about these vaccinations. You can have them free on the NHS.

Page last reviewed: 1 April 2025
Next review due: 1 April 2028