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Clopidogrel is a prescription antiplatelet medicine. It reduces your risk of getting blood clots by affecting cells in your blood called platelets.
It's also called Plavix and Grepid.
This page covers:
You may be given clopidogrel if you have or have had:
These situations mean you're at an increased chance of getting a serious blood clot. Taking clopidogrel can help reduce this risk.
Treatment may be for a few weeks or months, or it may be lifelong.
Clopidogrel comes as a tablet that you take once a day.
The usual dose is 75mg a day, although occasionally a single higher dose – such as 300mg or 600mg – may be recommended to begin with.
Clopidogrel can cause side effects, but not everyone gets them.
Some side effects are listed below. Check the leaflet that comes with your medication for a full list.
The following are common side effects that affect between 1 in 10 and 1 in 100 people:
Tell your doctor if these side effects bother you or don't go away.
Less common, but more serious side effects, include:
Go to your nearest accident and emergency (A&E) department if you think you're having an allergic reaction.
Speak to your doctor or call NHS 111 immediately if you have any other worrying or unusual side effects while taking clopidogrel.
Taking clopidogrel with other medications can affect how well either medication works, or increase your chances of getting side effects.
For example, this can happen if clopidogrel is taken with:
Always read the leaflet that comes with your medication to check if it's safe to take. If you're not sure, ask a pharmacist or your GP for advice.
No foods affect clopidogrel. You can drink alcohol while taking it, but try to not to drink too much because this may irritate your stomach.
Check with your doctor before taking clopidogrel if you:
Clopidogrel should only be taken by children if recommended by a specialist doctor.