AbstractThe treatment of preeclampsia is delivering women and extracting the placenta, but the Chinese Society of Obstetrics and Gynecology guidelines do not recommend the delivery of babies without severe features. The objectives of the study were to compare the effectiveness and safety of nifedipine and phytosterol in combination with nicardipine for the management of severe preeclampsia. Women (19–32 years; gestation age ≥ 30 weeks) with the complication of severe preeclampsia have received 10 mg of oral nifedipine (pregnant women received 10 mg of oralnifedipine,n= 112) or 1 mg/h intravenous nicardipine (pregnant women received 1 mg/h intravenous nicardipine (ND cohort),n= 115) or oral 10 mg nifedipine and 500 mg phytosterol (pregnant women received oral 10 mg nifedipine and 500 mg phytosterol (np cohort),n= 111) until 150/100 mmHg blood pressure was achieved. The time required to achieve the desired blood pressure control was 13 minutes shorter in the NP cohort compared to the NF (p< 0.0001,t= 11.605), and 3 minutes shorter compared to the ND (p< 0.0001,t= 2.79) cohorts. Stillbirths were reported in 14 (13%), 28 (24%), and 10 (9%) infants, and 13 (12%), 26 (23%), and 10 (9%) infants died from the NF, ND, and NP cohorts, respectively. The undesirable tocolytic effect was reported in 17 (15%) women of the ND cohort. Phytosterol with nifedipine has a synergistic or additive effect on the management of preeclampsia with fewer adverse outcomes.