3.1. Inclusion Criteria. Nulliparous and multiparous women:
(1) ≥18 years of age at time of consent.
(2) Taking ≤1.1mg of folic acid supplementation daily at
the time of randomization.
(3) Live fetus.
(4) Gestational age between 80/7 and 166/7 weeks of
pregnancy (gestational age is based on the first day
of the last menstrual period or ultrasound performed
before 126/7).
(5) Planning to give birth in a participating hospital site.
(6) Presentingwith at least one of the following identified
risk factors for PE:
(a) prepregnancy chronic hypertension (or diastolic
blood pressure ≥90mmHg on two separate
occasions of at least 4 hours apart or use of
antihypertensive medication for the treatment
of hypertension);
(b) pre-pregnancy diabetes (type I or type II);
(c) twin pregnancy;
(d) history of PE in the previous pregnancy;
(e) BMI ≥35 kg/m2 within 3months prior or during
the first trimester of current pregnancy.