This page is in the process of being updated to reflect new advice and guidelines.

The Current Guidelines from NICE

Advise pregnant women with more than 1 moderate risk factor for pre-eclampsia to take 75–150 mg of aspirin[1] daily from 12 weeks until the birth of the baby. Factors indicating moderate risk are:

  • first pregnancy
  • age 40 years or older
  • pregnancy interval of more than 10 years
  • body mass index (BMI) of 35 kg/m2 or more at first visit
  • family history of pre-eclampsia
  • multi-fetal pregnancy[2010, amended 2019]

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