Research Article

Antioxidants for Preventing Preeclampsia: A Systematic Review

Table 1

Characteristics of the included studies.

StudyCountryPopulationIntervention dosesAssessed outcomes
(mg)(UI)

Han and Zhou 1994 [22]China100 women with low/moderate risk of preeclampsia. Gestational age at entry not informedSelenium: 0.1Preeclampsia, side effects
Chappell 1999 et al. [23]UK283 women with low/moderate and high risk of preeclampsia with gestational age between 16 and 22 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, preterm birth <37 weeks, small for gestational age <10th percentile, baby death, miscarriage
Sharma 2003 et al. [24]India251 primigravidae with low/moderate risk of preeclampsia between 16 and 20 weeks of gestationLycopene: 4Preeclampsia, small for gestational age <10th percentile
Steyn 2003 et al. [25]South Africa200 women with low/moderate risk of preeclampsia with gestational age under 26 weeksVitamin C: 500Preeclampsia, preterm birth <37 weeks, baby death, miscarriage, neonatal death
Beazley 2005 et al. [26]USA109 women with low/moderate and high risk of preeclampsia with gestational age between 14 and 20 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <10th percentile
Poston 2006 et al. [27]UK and Holland2395 women with low/moderate and high risk of preeclampsia with gestational age between 14 and 21 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <5th and <10th percentile, baby death, miscarriage, neonatal death
Rumbold 2006 et al. [28]Australia1877 nulliparous women with low/moderate risk of preeclampsia between 14 and 21 weeks of gestationVitamin C: 1000Vitamin E: 400Preeclampsia, small for gestational age <10th and 3rd percentile, preterm birth <37 weeks, baby death, miscarriage, neonatal death, adverse effects
Rumiris 2006 et al. [29]Indonesia60 women with low/moderate and high risk of preeclampsia with gestational age between 8 and 12 weeksVitamin B-6: 2.2; vitamin B-12: 0.0022; vitamin C: 200; folic acid: 0.4; n-acetylcysteine: 200; copper: 2; zinc: 15; manganese: 0.5; iron: 30; calcium: 800; selenium: 0.1Vitamin A: 1000; vitamin E: 400Preeclampsia, preterm birth <37 weeks, miscarriage
Spinnato 2007 et al. [30]Brazil707 women with high risk of preeclampsia between 12 and 19 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <10th percentile, baby death, stillborn/miscarriage, neonatal death, adverse effects
Banerjee 2009 et al. [31]India159 primigravidae with low/moderate risk of preeclampsia between 12 and 20 weeks of gestationLycopene: 2Preeclampsia, severe preeclampsia, preterm birth, baby death, adverse effects
Villar 2009 et al. [32]India, Peru, South Africa, Vietnam1365 women with low/moderate and high risk of preeclampsia with gestational age between 14 and 22 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <10th percentile, baby death
McCance 2010 et al. [33]Ireland, Scotland, England762 women with high risk of preeclampsia with gestational age between 8 and 22 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, preterm birth <37 weeks, neonatal death
Roberts 2010 et al. [34]USA9969 women with low/moderate risk of preeclampsia with gestational age between 9 and 16/6 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <3rd percentile, baby death, miscarriage, neonatal death; side effects
Xu 2010 et al. [35]Canada and Mexico2363 women with low/moderate and high risk of preeclampsia with gestational age between 12 and 18 weeksVitamin C: 1000Vitamin E: 400Preeclampsia, severe preeclampsia, preterm birth <37 weeks, small for gestational age <10th and <5th percentile, baby death, miscarriage/stillbirth, neonatal death.
Vadillo-Ortega 2011 et al. [36]Mexico444 women with low/moderate and high risk of preeclampsia with gestational age between 14 and 32 weeksL-arginine: 3300 vitamin C: 250; niacin: 25; vitamin B-6: 2; vitamin B-12: 0.0048; folate: 0.2Vitamin E: 200Preeclampsia, preterm birth and neonatal death

UK: United Kingdom; USA: United States; mg: milligrams; UI: international units.