What is the dose of aspirin to prevent blood clots?
The usual dose to prevent blood clots is 75 mg each day. This is a lot less than the dose for pain relief. Taking more than the recommended dose does not make aspirin work any better to prevent blood clots, but increases the risk of side-effects developing. Therefore, stick to the dose recommended by your doctor which is usually 75 mg daily. If you take low-dose aspirin to prevent blood clots and you need to take painkillers (for example, for headaches) it is best to take paracetamol rather than a higher dose of aspirin.